Rpm won't get over 2000

Asked by Jul 16, 2017 at 02:01 AM about the 1997 GMC Jimmy 2 Dr SL 4WD SUV

Question type: Maintenance & Repair

97 gmc jimmy has a hard time getting over 2000
rpm if it even gets over 2000 rpm. I reached the
catylitic converter and the only thing now is the O2
sensor but could that really be causing that much
of a difference?

4 Answers


is the cat. plugged ? check any loose or broken vacuum lines intake leaks , , check EGR , fuel pressure , make sure injectors are firing

1 of 1 people found this helpful.

I replaced the cat, I replaced the trans fluid. The only thing I haven't done is put a new O2 sensor. I'm honestly lost. I'm 17 and trying to fix my own car cause I need to lean some how lol


so it doesn't rev. up in park ? Does it have the TBI unit like a carb. ? if there's an injector there see if it spits out a good amount of fuel when you rev. it , get a soda bottle poke a hole in the top and use it to squirt gas into the TBI at higher rpm's see if that helps , don't start any fires

1 of 1 people found this helpful.

It does rev up in park perfectly fine, I think it may be torque converter because some times when I drive it like once in a blue moon the rpm works fine but then slowly stops.

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