MY 5.7L is having issues.

Asked by BommyB Jul 04, 2015 at 10:23 AM about the 1988 Chevrolet Suburban V10 4WD

Question type: Maintenance & Repair

My 1988 Suburban with the 5.7L starts and runs good but after it's been driving for a
few miles it starts to cut out like it's not getting enough fuel, but if I step on it it
downshifts and runs fine until I let off then it starts cutting out again.  When I come to
a stop it idles just fine but has a bit of a problem taking off.  If it sits for a while it runs
perfectly for the first few miles then starts to act up again.  I have no idea where to
start looking, please help.

5 Answers

BommyB answered 8 years ago

I just put new injectors in it. How do I check for vacuum and intake leaks, and for memory codes.

Mark helpful
157,475

Bob answered 8 years ago

Did it run properly after you put the new injectors in? What was the reason for new injectors?

Best Answer Mark helpful

BommyB answered 8 years ago

It was running fine. I put new injectors, distributor cap, coil, plugs, plug wires, and 1 inch riser. I just found a vacuum line that goes to the throttle body that has a crack in it. could that be the problem? I'll replace it, just waiting on the parts store to open.

Mark helpful

BommyB answered 8 years ago

It's not the vacuum line. The store I was at didn't have the PCV valve but there is one in the next town over. I was going there today anyways so I'll pick it up and try it out tomorrow.

Mark helpful

Your Answer:

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