Chevrolet Repair Questions? Ask a Mechanic for Answers ASAP
Hello, my name is***** it starts acting up does it run rough at idle or idle fine? Thanks.
It sounds like you have a failing fuel pump. You can buy a fuel pressure gauge from parts store for about $20 then next time problem happens connect the gauge to see if it is lower then normal, if so replace. Most other things would not be intermittent and would turn on check engine light. Let me know how it goes or if you have more questions, thanks.
It is #20 in following picture. Some other things that come to mind is clogged catalytic converter or sticking EGR. You can unplug EGR valve to see if that helps, if so replace. You can also remove front oxygen sensor to relieve exhaust pressure, if it runs better with oxygen sensor removed you know problem is a clogged converter. Let me know if you have more questions, thanks.
Here is a picture, let me know if you run into more questions. Thanks.