Last post on Apr 25, 2013 at 2:17 AM
You are in the GMC Jimmy
What is this discussion about?
GMC Jimmy, Engine, SUV
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#297 of 301 Re: 98 GMC Jimmy won't start after head gasket replacement [jonnyring]
Jan 29, 2013 (10:07 am)
Hey I had the same problem three years ago and i replace my head gasket and Fuel pump. That fix the problem. Then two years ago Jimmy did the same again and come to realize we had to cut the Cadillac converts out and when we did you should see how clog it is. Yes the Engine light will stay on but i can look past that. Now we are battling break light switch. Hope this helps.
#298 of 301 Re: 98 GMC Jimmy won't start after head gasket replacement [chevydaddy]
Jan 29, 2013 (10:09 am)
Cadillac convert. I know sounds crazy but that happen to my 2000 Jimmy. Stop running and when we cut them out they were so clog know wonder why it wouldn't run.
#299 of 301 Re: 98 GMC Jimmy won't start after head gasket replacement [jonnyring]
Jan 29, 2013 (10:28 am)
I did get the problem fixed. I replaced the head gaskets, intake manifold gaskets obviously, crank position sensor, cam position sensor, plugs, wires, rotor, and dist. cap. The problem ended up being that I had it out of time. There are "veins" that run through the dist. cap, and I had it aligned incorrectly. Also, I did NOT send my heads out to have them pressure tested or anything like that. One thing to keep in mind, if you had any kind of coolant in the oil, you need to change the oil pump. I have good oil pressure upon initial startup, but once it warms up a little bit, pressure drops to almost nothing. I am in the process of replacing the oil pump, but I have to do it in my spare time, if there really is such a thing as spare time. Mine is a 4x4 and I have to pull the front differential in order to get the pan out. SUCKS!!!!
#300 of 301 cant figure it out
Apr 24, 2013 (9:02 pm)
I have a 95 jimmy it starts fine but after it runs for a lil bit stats to act up and if i drive it it really acts up between 1500 and 2500 rpm. I've replaced the Distributor and the cap new plugs and wires changed out the mass air flow i even tried and different computer i replaced the fuel pump a few years back really not sure what to try next so any suggestions would be appreciated
#301 of 301 Re: cant figure it out [bryanh83]
Apr 25, 2013 (2:17 am)
I too face a similar situation with my jimmy 95 model. After a few miles ride, the rpm goes high during idle. Par year I changed the fuel pump and hence I face this issue. Appreciate any suggestions.