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rednose

02-19-2009 08:47 PM

87 blazer chugging prob

i have a 1987 blazer 4x4 it starts to chug between 25-35 mphwhen slowing down and speeding up(just in that range of speed)i have chaned plugs,plug wires, oil change, air filter the only other thing i could think off would be fuel filters or sensors any other opinions?

quik1964

02-21-2009 01:32 AM

RE: 87 blazer chugging prob

the egr valves seem to be a common problem, wouldnt hurt to clean yours, if i knew how to add a link to help i would, but a liitle searching you could find the thread.

rednose

02-21-2009 12:19 PM

RE: 87 blazer chugging prob

i'll try it thanks!

wesmagyar

02-25-2009 04:56 AM

RE: 87 blazer chugging prob

I had a similar problem and for me it was the Computer went bad. If you can get a computer scan that would help. also try checking your 02 sensor.
-Wes-

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