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Tune Up or Catalytic Converter? #1026138 04/06/11 09:31 PM
Joined: Jul 2010
Posts: 120
timd75 Offline OP
Wheeler
I know this has been covered several times, but...I turned a corner yesterday after driving about 25 miles and got on the throttle pretty hard. The truck started bucking and the engine light came on. It has a p0303 code. It stutters real bad if you hit the gas below 2000 rpms, then it runs fine above 2000rpms. When it is cold it hardly does it, but the more I drive the worse it gets. I was wondering whether anybody thinks it is the usual bad plug,wires,coil,oil leak at valve cover or a clogged cat. Where should I start? Tuneup or converter?


99 Sportage 2Dr, 1.5" body lift, 30x9.50 Cooper M/T's, high lift, CB, custom bumpers, Warn manual hubs, Tom Tom GPS, snorkel.
99 Jeep Cherokee 3" lift, 31" mud terrains
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Re: Tune Up or Catalytic Converter? [Re: timd75] #1026139 04/06/11 11:40 PM
Joined: Feb 2009
Posts: 229
londart Offline
Wheeler
SOUNDS LIKE CONVERTER TO ME...ALSO CLEAN MAF WHILE AT IT


Lonnie
Auto Parts Professional
95 sportage sold but not forgotten
Re: Tune Up or Catalytic Converter? [Re: londart] #1026140 04/07/11 12:45 AM
Joined: Jul 2010
Posts: 120
timd75 Offline OP
Wheeler
I cleaned the MAF today. It made no difference.


99 Sportage 2Dr, 1.5" body lift, 30x9.50 Cooper M/T's, high lift, CB, custom bumpers, Warn manual hubs, Tom Tom GPS, snorkel.
99 Jeep Cherokee 3" lift, 31" mud terrains
Re: Tune Up or Catalytic Converter? [Re: timd75] #1026141 04/08/11 02:59 AM
Joined: Jul 2010
Posts: 120
timd75 Offline OP
Wheeler
Finally got to do the tune up today. The wire for 3rd cylinder was corroded in the coil. New plugs, new wires, new reason to go get muddy.


99 Sportage 2Dr, 1.5" body lift, 30x9.50 Cooper M/T's, high lift, CB, custom bumpers, Warn manual hubs, Tom Tom GPS, snorkel.
99 Jeep Cherokee 3" lift, 31" mud terrains

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