What is your question?
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What is your question?
First was a code 44, which was a bad fuel pump, changed it, code went away, a few days, later the engine began to start slowly, drawing heavy on a new good battery, just purchased, then when it did start, the engine began to run rough, did not stall though, but sound from the muffler a "miss" in the running engine with a sound that sound as if had a " burned valve" noise with a "poping" sound in the muffler, the fuel is running rich, as so much one can smell the odor of "gasoline like "or a sulfur like odor from the tailpipe when running, it still drives but hesitation to advancing top speed at first, it's an "ob-1 system", with a flashing lights in the dash which a plug in " scanner code" showing a CODE " 32", WHICH seems thats its an egr valve, but it seems ok it lifts up and down and the engine stops when running when i open it up, not sure WHAT the problem is? Anyone have any IDEAS?? AS HELP WOULD BE MOST APPRECIATED, THANKS...
What makes this problem better or worse?
Its is hard starting when cold, slow pull from the starter, hard drain on a recently purchased platinum diehard battery purchased 2 days ago,
How long has your 1990 Chevrolet R1500 Suburban had this problem?
a week and a half ago, it was 3 weeks since I change the fuel pump (new one, factor equipment Gm))
1 Reply
Hi, this is Bo, an auto expert on RepairPal's Car Genius team! That Code 32 on your 1990 Suburban generally signals an EGR issue, but from what you’ve described—misfiring, rich fuel, and a popping sound—your engine may be dealing with a combination of issues. While the EGR seems functional, you might have a failing O2 sensor (often a culprit with Code 44) or a vacuum leak affecting idle. Also, a compression test might confirm if there's indeed a burned valve. That sluggish starting could indicate worn ignition components or battery grounding issues as well. If you need any further advice or want help finding a trusted RepairPal shop in your area, please feel free to call us at 877-913-1554.