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GMC Jimmy Engine and Performance Problems

12 messages,  Last post on Aug 09, 2009 at 2:48 PM

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What is this discussion about? GMC Jimmy, Auto Repair, SUV

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#8 of 12 LOSS OF POWER by denis83 Apr 14, 2008 (7:10 pm)
I HAVE A 83 S-15 JIMMY2.8L W/CALIF EMISSION.ANY KIND OF INLINE OR LOAD AND IT CUTS OUT PUKES AND PUTTERS. IT WILL ONLY GO ABOUT 10 MPH. I HAVE REPLACE THE TPS ANDO2 SENSOR AND HAS NO MORE CODES. IT IS TIMED GOOD NOW AT A LOSS.
#9 of 12 help by jensjimmy Apr 15, 2008 (8:45 am)
hey,   so I have a 1996 gmc jimmy 4x4. my boyfriend just finished taking the engine out and replacing the rear seal. when he put it all together it was starting to have issues starting. I would have to start it 4 times for it to finnally go. so besides that it was working great. now I was driving home from work yesterday and it was stalling like every 2 blocks. and when my boyfriend started it after I got home it was making this crazy knocking sound. he thinks it might be the airflow sensor. I think the starting it was the vacume lines mixed up but I don't know why it's stalling now anybody have any advice for me?
#10 of 12 Re: Jimmy won't shift [mmeuli] by peterock81 Apr 07, 2009 (6:46 am)
Replying to: mmeuli (Dec 10, 2007 9:44 am) I had this problem with my jimmy and found it was the throttle position sensor. i as well had multiple codes including codes saying low input and high input to my map sensor. The truck shifted extremely hard going from 1st to 2nd and 2nd to D. I went to the junk yard and pulled one off a wrecked blazer for my truck 6.50 vs 45 or 50 bucks as a trial and error with the sensors. I tried the TPS first because from what reseach i did online it seemed to be the most common solution for the series of codes being tripped
#11 of 12 1996 GMC Jimmy won't stay running HELP by cproulx May 05, 2009 (3:48 am)
I just changed the fuel filter on my Jimmy - it ran fine for 2-3 days. Now it will start and run in park but when I put it into gear and give it gas it sputters hesitates and stalls out. Anyone have any ideas?
#12 of 12 99 JIMMY SLE WARM ENGINE HARD STARTING by puzzledjimmy Aug 09, 2009 (2:48 pm)
I HAVE A 99 JIMMY SLE. IT STARTS UP NORMALLY FIRST THING BUT WHEN IT GETS WARM AND I STOP TO DO SOMETHING FOR ABOUT 15 - 20 MINUTE, IT TAKES A FEW SECONDS TO TURN OVER. I MAY HAVE TO GIVE IT A LITTLE GAS TO TURN IT OVER. IT RUNS GREAT OTHERWISE. I HAVE REPLACED THE GAS TANK,GAS PUMP AND SENDING UNIT. THE FUEL FILTER. THE MAP SENSOR AND AIR FILTER. I HAVE HAD THE SPIDER INJECTORS CHECKED AND THEY ARE FINE. I GET BETWEEN 16 AND 18 MILES TO A GALLON. TOP PERFORMANCE FOR THIS VEHICLE I WAS TOLD. CAN ANYONE TELL ME WHAT MAY BE WRONG?

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