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1990 22r problems #880070 04/10/08 10:00 PM
Joined: Aug 2003
Posts: 2,854
G
Greg_Canada Offline OP
Roll Me Over
It wont pass emissions, we've narrowed it down to a few things... the HC is high... what would cause that? Clogged cat?

Also, is there an o2 sensor/emissions computer in the 90' 22r's? (or is there supposed to be?)


89 4Runner
3" BL, M/T locks, 33"bfg mt, bilstein, Kayline, tubebumper, toyotafiberglass panels
TBI: Elocker,3.4 w/ORS,b+b,S2Sstg2cams,arias pistons,P+P intake,TRDs/c,URDpullies+7th,downey headers,MAPECU2,WEGO WB, SupraMAF,walboro255,stg4clutch, EPaOo2 sim
From the Off-Road World
Re: 1990 22r problems [Re: Greg_Canada] #880071 04/11/08 04:46 AM
Joined: May 2006
Posts: 457
D
Davepet Offline
Mudrunner
My Calif. 84 22r had a computer & an O2 sensor, so I'd expect a 90 to have them too.

Re: 1990 22r problems [Re: Greg_Canada] #880072 04/11/08 04:58 AM
Joined: Apr 2000
Posts: 4,230
OOP'S Offline
Roll Me Over
Yes it is in the PS kick panel, will not run without it. <img src="/forums/images/graemlins/smile.gif" alt="" />


David Fritzsche
1990 Ex-Cab V-6,5-speed, with a few mods
04.5 CTD Dodge 2500 Ram--Tow Rig
Roseville, CA

"Serenity through Sobriety"
Re: 1990 22r problems [Re: Greg_Canada] #880073 04/11/08 05:01 AM
Joined: Oct 2002
Posts: 15,887
kewlynx Offline
Toyota & Classifieds Moderator
*****
Greg, to clarify, is that thing carbed or EFI? Last carb in the US was '87. (term 22R v. 22RE)

You can run the VIN thru carfax and see what they have in the database for it originally, if it's in there.

High HC for carb typically is the AAP or the cat. If your dipstick smells like fuel, make sure you change your oil and filter before going back in once you fix things.


http://www.walkablecommunities.org/

Democracy is two wolves and a lamb voting on what to have for dinner. Liberty is a well-armed lamb contesting the vote.

**ubi apis- ibi salus**
Re: 1990 22r problems [Re: kewlynx] #880074 04/11/08 05:45 AM
Joined: Apr 2004
Posts: 2,010
87Toy4x4 Offline
Body Damage is Cool
Carbies were available until 1991 in the non sr5 2wd trucks.


87 22R PU, 2 body lift, 33 BFG muds, 4.88's, F&R Lock-Rights, Rancho Shocks, EB's Street RV Head w/ 268 Cam, LCE Header, 2" to 2 1/4" exhaust, Flowmaster 50 series, Magnaflow high flow cat, complete Herculined SR5 interior, V6 BB, MC, and calipers.
Re: 1990 22r problems [Re: Greg_Canada] #880075 04/11/08 08:11 AM
Joined: Apr 2002
Posts: 3,568
Snowtoy Offline
Roll Me Over
High HC's is caused by an incomplete fuel burn or from running rich. What are the numbers? A new cat can knock the HC's down abut 100 or so and would be the cheapest place to start when you start replacing items. A failing/lazy O2 sensor will also cause it to run rich. You should also pull and check the EGR valve and PCV valves either if those get clogged it can also cause rich conditions. If you do have a 22re and not 22r an air leak in the intake after the AFM will also cause it to run rich.


More than tread lightly. Leave it like you were never there, nor anyone else.
'90 X-cab 4.88's 33 BFG AT's, rr ARB, Headers, Ignition upgrade, cold air induction.
'91 X-cab 5.29's 315's BFG MT's, rr ARB, custom bumper and flatbed
Re: 1990 22r problems [Re: Snowtoy] #880076 04/11/08 02:10 PM
Joined: Aug 2003
Posts: 2,854
G
Greg_Canada Offline OP
Roll Me Over
It's a 22r.... carbie, we bumped the timing up a bit and the truck ran alot better. havent done the e-test since doing that. Can timing effect HC?
Also, there is no o2 sensor, there is a pipe welded in place of where the o2 sensor is in a normal truck, still havent found the wiring for it.....
oh also a full tuneup was just done on the truck...
I will get some more info later in the day, it's a friends truck...


89 4Runner
3" BL, M/T locks, 33"bfg mt, bilstein, Kayline, tubebumper, toyotafiberglass panels
TBI: Elocker,3.4 w/ORS,b+b,S2Sstg2cams,arias pistons,P+P intake,TRDs/c,URDpullies+7th,downey headers,MAPECU2,WEGO WB, SupraMAF,walboro255,stg4clutch, EPaOo2 sim
Re: 1990 22r problems [Re: Greg_Canada] #880077 04/11/08 09:11 PM
Joined: Apr 2002
Posts: 3,568
Snowtoy Offline
Roll Me Over
Is it a factory weld over the O2 bung, or is it a private job. If factory does Canada emissions require an O2 on your carb'd '90?

Since it is carb'd, there is an air injection valve(at least on the older ones), that adds air to the exhaust gasses to help burn the unburnt fuel. If this is bad you will also get higher HC's than normal, which a new cat will not fix.

Timing can effect fuel burn and cause higher HC's, though I am not sure how much.

Did it fail at both idle and 2500 or dyno tests?


More than tread lightly. Leave it like you were never there, nor anyone else.
'90 X-cab 4.88's 33 BFG AT's, rr ARB, Headers, Ignition upgrade, cold air induction.
'91 X-cab 5.29's 315's BFG MT's, rr ARB, custom bumper and flatbed
Re: 1990 22r problems [Re: Snowtoy] #880078 04/12/08 10:55 PM
Joined: Apr 2008
Posts: 4
A
absoface78 Offline
Need a Spot
Just for reference, I have an "84 4Runner with a booger weld over the O2 sensor mount, but I found the single wire wrapped up on the driver's side inner fender near the coil. Wasn't easy to find among the thousands of crappy innovations the previous owner did.

Re: 1990 22r problems [Re: Greg_Canada] #880079 04/14/08 08:32 PM
Joined: Nov 2000
Posts: 301
P
Pyroboy Offline
Mudrunner
Mine failed on high HC on idle last year. Dealer told me I needed a new cat but a set of plugs and wires and some ethanol-blend gas did the trick. If you can't get the gas, dump a bunch of gas-line anti-freeze in.


1989 4Runner Special Edition
22RE, 5-spd.
TG 3" SAS, MC DuaLs, 4.56s, Air Locker
Hi-Clearance panels by
www.toyotafiberglass.com
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