Jimmy's Still Driving Me Nuts!

[slednredhead]

Ok, hopefully this will be my last time I come on here for this Jimmy-its up for sale....however, since I've done a complete tune up, coil and all, and replaced the u joints its been running and driving much better, but now that spring has hit i've been having stalling problems. I drive about 25 miles highway to work, and at first it was starting to stall when i would come to a stop when I get off the highway and the engines at lower rpms-the check engine light does not come on. This went on for a few days. The weather cooled off and it stopped stalling. Well today it got up to 80 degrees-it stalled 3 times on the highway, and tried to stall about 8 times while on the highway-the times it didnt stall completely i would lose about 2000rpm, and pump the crap out of the gas, and the rpm would come back up. I get off the highway, and of course it stalls a few more times...and the check engine light still doesn't come on until its stalled...are my cats clogged? fuel injectors? fuel pump? lol wanna buy it?

[Ranger]

Sounds like it's overheating...I'd check the thermostat. Very least, check your radiator fluid levels.

[matt_o_70]

will it run fine if you hold the throttle open a bit?

 

not sure if jimmy has an EGR valve? but if so stalling coming off the highway or at stop lights is a classic stuck EGR valve symptom.

[luthor]

sounds like EGR prob. though its also good to check on other parts like fuel pump; oxygen sensor; fuel filters; low transmission fluid; weak spark. My dad's GMC Jimmy had the same problem just a week ago, - the fuel pump and filters being the culprit.

[sam5828]

if it is stalling when you come to a stop it sounds like the torque converter is staying locked in OD, i have no idea where the plug is on the jimmy but you can unplug it and stop it from going into OD. that helped 2 of my vehicles over the years..

[Rosedog]

When my cat went out in my 92 Sonoma GT it stalled on the highway with me when I let off on the gas. It scared the crap outta me too when it happened because I was outta 45 miles from home going to a friends house. It died on me getting off the freeway and it took a few trys to get it started again. After it had some time to cool off I went home and it started out ok but once it got hot it started crapping out again. In short I had I basically had it floored all the way home and I barely hit 60mph. Once the cat was replaced no more problem.