dont want to go
#1
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hi all newbee here. ok i have a 2000 blazer changed fuel pump about 1 month ago fixed all problems. now when running and it gets to 2500-3000 rpm it seems like it is clogh up . deep grawl sound and no power then spits out and stalls .I NEED HELP PLEASE . THANK YOU
#4
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Yep...as rriddle3 says. Remove the pre-cat O2 sensor with engine cold. If possible put something to deflect the hot exhaust from hitting the underside.
Start engine and see if any difference. If so, then cat is plugged...replace. Best is to replace entire pre-cat, cat and cross-over assembly, but you can also just replace the cat by cutting out and welding one in. Trouble is the pre-cat could also be plugged-up.
Start engine and see if any difference. If so, then cat is plugged...replace. Best is to replace entire pre-cat, cat and cross-over assembly, but you can also just replace the cat by cutting out and welding one in. Trouble is the pre-cat could also be plugged-up.