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weber 32/36 electric choke wiring

Posted By: gueroblanco

weber 32/36 electric choke wiring - 09/13/09 12:27 AM

The original choke is vaccuum operated, so no original choke wire. Anyone who has done the weber upgrade know what to do here? Should I just use a standard 12v feed from the battery?
Posted By: Adam F

Re: weber 32/36 electric choke wiring - 09/13/09 05:07 AM

No, for an electric choke, you want a SWITCHED 12v+ power source going to the choke, so that its closed with the key off, but once you turn the key on, it slowly opens up.

The other wire goes to ground.
Posted By: stock87

Re: weber 32/36 electric choke wiring - 09/13/09 07:26 AM

Actually, the vacuum is the choke pulloff mechanism. All the 22R chokes were electrically heated (20R still had the water choke), so there is a wire in there somewhere. On an 85, look for a round, green 4 wire plug on the passenger inner fender near the carburetor.

[Linked Image]
Posted By: gueroblanco

Re: weber 32/36 electric choke wiring - 09/13/09 02:57 PM

should we move this post into the weber tech post that up until this point seems to have been ignored by the majority? (when posting questions)

it occured to me after I posted this that it might be nice if that weber tech post started accumulating helpful info and I'm willing to supply stupid questions and pics. <img src="/forums/images/graemlins/notooth.gif" alt="" />

I do have further questions on this subject but I would like to supply a couple pics for reference. thank you for the info so far guys.
Posted By: gueroblanco

Re: weber 32/36 electric choke wiring - 09/13/09 04:59 PM

OK so here's a picture of the truck side of the plug.

[Linked Image]

I took the liberty of labeling it the opposite of the carburetor side as illustrated in the picture

Quote

Actually, the vacuum is the choke pulloff mechanism. All the 22R chokes were electrically heated (20R still had the water choke), so there is a wire in there somewhere. On an 85, look for a round, green 4 wire plug on the passenger inner fender near the carburetor.






And then here is a picture of the connections on the side of the Weber:

[Linked Image]

So my question to clarify is this: Are you saying that I should connect the fuel cut (+) terminal to the choke terminal? (labelled "1" in the picture) And the instructions included with the Weber say to connect a "jumper wire" to the fuel cutoff solenoid (labeled "2" in the picture) Would that mean doing what I have done with the yellow wire? (labelled "3" in the picture) There are no other terminals on the carb anywhere, so basically my question is just plug (1) into the fuel cutoff (+) terminal?
Posted By: stock87

Re: weber 32/36 electric choke wiring - 09/13/09 05:24 PM

Well, you could do it that way, but the way the factory "computer" operates the fuel cut wouldn't be ideal. Assuming you still have the 2 vacuum switches hooked up on the passenger fender, the truck will cut power to the fuel solenoid when slowing down over 25MPH with the brakes on to conserve fuel. Ideally, you'd hook the choke wire to the "Coil housing +" and the fuel cut to the "Fuel cut +"
Posted By: yodta

Re: weber 32/36 electric choke wiring - 09/14/09 04:52 AM

I don't have the fuel cut solenoid on my 32/36. all I have is 12v going to the choke spring, and that's it.

at least I'm pretty sure it's 12v. if I'm not mistaken there's also 6v wire(s) in that bundle as well? can't remember. I can read it out for sure if necessary.
Posted By: gueroblanco

Re: weber 32/36 electric choke wiring - 09/14/09 06:55 AM

I made a very technical wiring harness <img src="/forums/images/graemlins/rolleyes.gif" alt="" />
and then hooked it up...

[Linked Image]

[Linked Image]

In addition I found that I still needed to plug a couple vaccuum ports coming off the intake and i had a vent hose and the fuel supply line crossed. ( <img src="/forums/images/graemlins/scared.gif" alt="" /> that can't be good) had fuel coming out the other vent line that's supposed to go to the first charcoal canister. that tripped me out...
anyway, she fired right up and was running very smooth. It's been a long strange road to get to this point, I'll tell you all the whole story in another section of the wire someday, but the engine change out and the offy intake / weber might not have been the best idea to do all at once, but whatev. I'm coming around the final turn now. I think I have the vac advance hoses figured out for the distributor, and if I do, I will show where they go so that others may have a look. thanks guys.
Posted By: yodta

Re: weber 32/36 electric choke wiring - 09/14/09 06:45 PM

vacuum hoses are pretty simple, though it took me years to figure out that my truck exhibits better driveability and fuel economy with manifold and ported vacuum on the distributor as originally intended. I've seen some errors in various Weber install documentation where they recommend "jumping" a single vacuum signal. this is incorrect.

[Linked Image]

[Linked Image]
Posted By: gueroblanco

Re: weber 32/36 electric choke wiring - 09/14/09 10:32 PM

any idea where to get those metal plugs that screw into the intake?? I think I need one more. thanks for the show and tell. that will be very helpful <img src="/forums/images/graemlins/kewl.gif" alt="" /> do you still employ both charcoal cans? and also, is that an aftermarket distributor?
Posted By: yodta

Re: weber 32/36 electric choke wiring - 09/15/09 03:31 AM

I bought mine at a fastener shop here in town. I don't remember the sizes specifically, except that they're all NPT. I thought they were just standard threaded holes at first, but no. funny story, actually. I was wandering about this place for about 10 minutes, feeling a bit overwhelmed. this place isn't very well organized and is chock full of nuts and bolts and all sorts of odd bits and pieces. this plumber dude walked in, looked at my manifold for maybe two seconds and said, "You need NPT plugs; they're over here." I was like, "Huh?" he was right smile

I doubt you'll have any trouble finding a specialty fastener type shop out your way, but if you do, let me know and I'll see if I can pick some up.

I don't have the charcoal canisters. mine were all rotted out. I can't really remember where they go, or how they're connected. one's for tank vent, I think. being a Cali truck, you probably have to be careful about dumping that stuff. I ended up just connecting a small generic fuel filter for venting. feel kinda guilty about that. maybe I'll see about finding a generic type charcoal canister to use.

the distributor is an aftermarket OEM replacement that I ordered through Advance Auto. I tried the LC all mechanical model, but it runs a hotter advance curve. I was never really satisfied with it, since getting my Weber jetted properly took so much trial an error. anyway, I became more interested in driveability and fuel economy while still maintaining decent throttle response, so I went back to the stock distributor. I prefer it. it's nice and smooth, and I can cruise down the highway without my foot in the gas too much. that's the benefit you get from the idle advance kicking in at cruise; it advances the timing under low to no load conditions allowing you to hold cruise speeds with a leaner mixture which saves you fuel.
Posted By: gueroblanco

Re: weber 32/36 electric choke wiring - 09/15/09 06:17 AM

I think my idle cut-off solenoid is defective because it should click when it powers up and it does not. <img src="/forums/images/graemlins/frown.gif" alt="" /> I had the truck running and it was running really good and smooth but then I goosed the throttle after which it idled down and died and now will not start. I'm going to try it again in the morning cold, and if it still does not work i'm gonna call weber. stupid solenoid. (or stupid me...)

oh, but I shouldn't need two charcoal canisters should I? I'm just not sure how to go about eliminating one and keeping the other. I want to eliminate the ecu entirely if at all possible...

Quote
and I can cruise down the highway without my foot in the gas too much. that's the benefit you get from the idle advance kicking in at cruise; it advances the timing under low to no load conditions allowing you to hold cruise speeds with a leaner mixture which saves you fuel.


btw what is your gas mileage on average? driving easy that is...
Posted By: yodta

Re: weber 32/36 electric choke wiring - 09/15/09 06:37 AM

I can't say that I have my setup completely dialed yet, but I get 17-18 mostly around town type driving. I've seen 22-23 on road trips. I hear people running the 38/38 get about the same.

so nothing spectacular, but more importantly to me, it's fairly responsive and smooth. idles nicely, too.

I don't really know anything about the fuel cut solenoid. I thought it was just to help prevent run-on?
Posted By: gueroblanco

Re: weber 32/36 electric choke wiring - 09/17/09 05:20 AM

I found a problem with the charge system, the 7.5 amp fuse was blown, not sure why... the engine at least will start now, but the idle is very rough. Still no click in the solenoid when it powers on. I'm gonna call weber about it tomorrow.

Went to a napa store today, they had the plug I was looking for so I eliminated the crazy thing that has like 4 different multi sized vaccuum ports that screws into the intake... looks neater anyways...
Posted By: yodta

Re: weber 32/36 electric choke wiring - 09/17/09 08:24 PM

yeah, I was just gonna pop on here and tell you I saw those plugs at Advance last night while I was looking for an exhaust tip. you know, to gain 15 extra horsepower.

plugs were in the little hardware section for future reference.

as for rough idle, did you go through the setup and lean best idle adjustments?
http://redlineweber.com/html/Tech/carburetor_set_up_and_lean_best_.htm

another thing to consider is checking for a vacuum leak. a vacuum leak can cause rough idle.
Posted By: gueroblanco

Re: weber 32/36 electric choke wiring - 09/18/09 04:32 AM

The idle cut off solenoid is defective, and the guy at weber sent me a new one so that is on its way. As for the rough idle it was completely unrelated. The person who sold me the engine or whoever set this thing up switched the wires for the #2 and #3 plugs. I checked the plugs, but assumed that the wires were in the right order and just made sure I put them back on the one they came off of. <img src="/forums/images/graemlins/sleeping.gif" alt="" />

Once I did that, it fired right up, running nice and smooth, good acceleration, nice and snappy like I hoped for.
the fast idle and the idle mix were WAY off (probably somethin to do with the intake...) but I got those dialed and took my strange contraption for a spin and she did nicely. <img src="/forums/images/graemlins/kewl.gif" alt="" />

thanks for all the help guys. <img src="/forums/images/graemlins/kewl.gif" alt="" />
Posted By: yodta

Re: weber 32/36 electric choke wiring - 09/18/09 04:54 AM

what are you running for jets?
Posted By: gueroblanco

Re: weber 32/36 electric choke wiring - 09/18/09 06:03 AM

I dunno, whatever comes in the carb I guess. <img src="/forums/images/graemlins/confused.gif" alt="" />
Posted By: yodta

Re: weber 32/36 electric choke wiring - 09/18/09 09:49 PM

oh okay, cool, just checking. I'm always curious to know what other Weber users are doing for jets and config.
Posted By: gueroblanco

Re: weber 32/36 electric choke wiring - 09/20/09 01:19 AM

why what are the options? and what are you running?

BTW the new idle cut off solenoid already arived today. Weber sent it priority. I haven't tested it yet, but I hope it works.
Posted By: yodta

Re: weber 32/36 electric choke wiring - 09/20/09 04:34 PM

jetting configurations depend on your engine build. my configuration may be different than yours.

for example, my engine has:
Comp Cams 252S
Offy Dual Plane Manifold
DT Header, Cat, Flowmaster and 2-1/4" pipe everywhere else.

those are the basics.
I'll have to find my notes or pop the top to run down my current config. the 32/36 did not work well for me as shipped, though, so I've spent a lot of time tuning. still not convinced it's optimal, heheh, but it "feels" pretty good smile

I'll try to drop by with some numbers later today. need to shoot some carb cleaner in there anyway.
Posted By: gueroblanco

Re: weber 32/36 electric choke wiring - 09/21/09 03:44 AM

I just have the offy and the carb so far, but I also plan on doing at least a header and 2 1/4 exhaust w/muffler only.
Posted By: yodta

Re: weber 32/36 electric choke wiring - 09/21/09 02:23 PM

from experience, allow me to offer you the advice of keeping all your stock components, just in case you ever want to go back.

when I first bought my truck, I went crazy bolting all sorts of stuff on trying to wake up my little 22R engine, specifically, I installed a Weber 40/40 and a 4:1 header, ditched my cat, and installed a Magnaflow straight through muffler. those are all high rev type upgrades, and not at all what I needed. I was looking for a low to midrange torque boost, not high end power. my point is, think about what you want your truck to do differently or better, and make sure that what you're doing aids in that goal.

that said, be careful with exhaust mods. I've found that the tri-y header design works well in opening up the exhaust enough to breathe at higher revs (3000-3500+), but more importantly, maintains the scavenging effect that the overlapping runners provides (note that it's the same design of the stock manifold? the engineers did that for a reason) I ended up putting my cat back on. why? because while things flowed nicely and freely at higher speeds, without some back pressure, my little 22R lost a lot of its bottom end, the low to midrange torque, which was exactly where I wanted the boost. it felt empty and lifeless.

you can always take the cat off later if you think it's choking the exhaust. for now, try to resist the urge to make all your upgrades at once, and do only one thing at a time so you can really get a feel for what works.

just a little wisdom from someone who's been down that path before, and wasted a LOT of money on things that didn't work, only to come back to moderate upgrades over the stock design.
Posted By: gueroblanco

Re: weber 32/36 electric choke wiring - 09/21/09 06:05 PM

Thank you for the experienced viewpoint. I'm not big on getting rid of stuff unless I have to. (semi-pack<img src="/forums/images/graemlins/rodent.gif" alt="" />) I've also experienced horrible performance and also reduced gas mileage due to (I'm guessing) not enough backpressure in the exhaust pipe. So I dont want to go crazy with freeing up the flow of my exhaust and I still want the exhaust to be fairly quiet. I picked up this Ford mustang muffler (aftermarket oem) that I figure would keep me close to what I need on back pressure and keep me pretty quiet. the aftermarket cat that I had replaced the old one with was only $50 for the cat + welded in and is only like 2 years old so should be good, not to mention the flange is 2 1/4 and would fit into the system if I don't like performance without it. I can always cut the pipe to add it later.
Posted By: yodta

Re: weber 32/36 electric choke wiring - 09/21/09 09:15 PM

the single most important thing I've learned in attaining responsive drivability and good fuel economy with the Weber 32/36 on this engine was making sure the timing is correct. that means making sure you're getting ported vacuum and manifold vacuum to the right ports on your distributor, and making sure that neither of the diaphragms is torn so that the vacuum advance actually works as designed.

so, no vacuum leaks, and proper timing. this is where you're going to get your throttle response and ability to hold cruise under light throttle, because the distributor will advance your timing allowing you to run leaner. that means no more foot to the floor all the time, which will give you better fuel economy, and with the proper timing, you'll find you flog the pony less to get the response you want.

spending money on anything else will just be a waste unless this stuff's properly set up. trust me. I used to get 12mpg before I figured this out smile now I get 17/18 in the city, about 22/23 highway. it could probably be better if I had stock size tires and stock cam. or if I could keep my foot out of it smile
Posted By: gueroblanco

Re: weber 32/36 electric choke wiring - 09/22/09 03:03 PM

keeping my foot off of the floor... thats always tough (I think a strategicly placed dent in the floorboard may help me with that too) <img src="/forums/images/graemlins/lol.gif" alt="" /> good idea though I would have never even thought to check the diaphragms in the distributor.
Posted By: 77celica

Re: weber 32/36 electric choke wiring - 09/25/09 07:23 AM

Good to know the weber talk is still going on. I now have my 38DGES on and running. My car does not have an exhaust yet though. It feels like a dog, but I'm sure lack of exhaust pipe has something to do with it. I have the LC Engineering 4-1 long tube header on it. I will resist the urge to try to tune the car until the exhaust is plumbed. This winter will be for body work. Exhaust may wait until spring.

BTW, there should be a way to get that 1 million post weber discussion here from offroad.com shouldn't there?
Posted By: yodta

Re: weber 32/36 electric choke wiring - 09/25/09 02:51 PM

Hey Ron, good to see you here. yeah, apparently a lot of stuff disappeared from ORC.

I collected that post and tidied it up a bit some time ago, along with resized photos and such, and have it available for download on my website. I think it's got most of the good stuff in it. for anything missing, there's a pretty good Weber community here and I'm looking forward to interacting again, as I've just taken a renewed interest in my truck.

then I also have a collection of other Weber stuff I've picked up over the years; manual, various install guides, photos, etc. it's a little over 40MB of stuff.

I'll keep this up here as long as it doesn't see so much traffic that it kills my allocated bandwidth smile I'll see if I can sort through it and maybe we can find a less nested place on the forum at which to share this information, but for now, let's just keep it a "pssst, hey check this out..."
Posted By: DRTDEVL

Re: weber 32/36 electric choke wiring - 09/25/09 05:41 PM

Quote
Hey Ron, good to see you here. yeah, apparently a lot of stuff disappeared from ORC.

I collected that post and tidied it up a bit some time ago, along with resized photos and such, and have it available for download on my website. I think it's got most of the good stuff in it. for anything missing, there's a pretty good Weber community here and I'm looking forward to interacting again, as I've just taken a renewed interest in my truck.

then I also have a collection of other Weber stuff I've picked up over the years; manual, various install guides, photos, etc. it's a little over 40MB of stuff.

I'll keep this up here as long as it doesn't see so much traffic that it kills my allocated bandwidth smile I'll see if I can sort through it and maybe we can find a less nested place on the forum at which to share this information, but for now, let's just keep it a "pssst, hey check this out..."


Just have Kewlynx move it to the tech archive. It sees little traffic, but will be there for posterity. Heck, maybe you could break it down to a quoted post (with credit to it's owners) and she can put that in there instead.
Posted By: 77celica

Re: weber 32/36 electric choke wiring - 09/26/09 05:19 AM

I have a pdf of the same stuff you have saved on my computer too smile I know what you mean about your truck. I lost interest in my car too. Too long not driving it and household projects piling up. I figured winter is a good time to get some work done after I work down the list some. It will probably be AFTER Christmas. I guess I can accumulate supplies and parts until then.
Posted By: yodta

Re: weber 32/36 electric choke wiring - 10/05/09 05:57 AM

guero ~
did some tuning stuff this weekend and popped the cap off my carb and pulled my jetting config. this is what I'm currently running:

(prim/sec)
Idles: 75/65
Mains: 155/150
Airs: 180/175
Screw: 2 turns, little +

this is with the Offy Dual Plane manifold and a K&N round air filter. I just put that "old" filter on while I was waiting for my Ramflo filter to dry. the Ramflo is a foam filter. I think it's the highest flowing air filter you can run. I noticed that it seemed a little sluggish when I put on the K&N; my A/F meter was showing that it was actually running a little bit lean, which really doesn't make sense to me. I'd think, less air, run rich, right? unless, of course, the K&N flows more air. don't know.

anyway, it had 150/150 mains in before the filter swap. AND, I'm considering trying the stock air cleaner assy which should choke it out a good bit, so I'll probably have to rejet again. the reason I like the stock air cleaner assy is that it pulls air in from the front of the vehicle; cooler air, that is. that's what I hate about the Weber setup; I'm just sucking in hot engine bay air. was toying around with the idea of a functional hood scoop or some quasi snorkel thing, but eh.

anyway, food for thought.
guess I'm officially back to Weber tinkering smile
Posted By: Ralph

Re: weber 32/36 electric choke wiring - 10/05/09 11:01 AM

Hows the Offy 360 Dual Plane working out?

In my experence the K&N air filters flow real well and clean real poorly. I add a piece of UNI foam over the top of mine to increase the filtration.
It still flows plenty of air, it's just cleaner.
Posted By: yodta

Re: weber 32/36 electric choke wiring - 10/05/09 04:41 PM

I don't really have anything comparable to compare the Offy to. I've been thinking about playing around with the stock manifold though, so if I do that I'll post my findings in the write-up.

how do you know the K&N doesn't clean very well? you keep it cleaned and well oiled, yes?

what's UNI foam and where do you find it?
sizing and such?
part numbers?
photos?

so a pre-filter?
something like these offered by Summit Racing?

I was thinking this morning about having to rejet my Weber last night and increase the size of the primary main jet. all this time I've been assuming the Ramflo foam filter flows better than the the K&N, but the fact that it went lean after swapping to the K&N would indicate more air, leading me to think that the K&N flows more air than the Ramflo?
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