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04-27-2012, 04:55 PM
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#1 |
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Registered User
Join Date: Jan 2010
Location: Jacksonville Florida
Posts: 234
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Check engine light.
My Blazer drives fine all over town but when i reach highways speeds the check engine light comes on and stays on untill you turn the truck off. when you turn it back on it is no longer on. i can't tell you how fast i am going when this happens because the speedo is currently non-op. the tranny does feel like it is not shifting properly at these speeds. it is a loud truck and when it comes time to shift, it gets really baffled sounding, and then loud again when it shifts. it is a 1991 with a 350. i could really use any ideas as to what the problem is. thank you.
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Jesse. 
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04-27-2012, 05:00 PM
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#2 |
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Registered User
Join Date: Jan 2010
Location: Jacksonville Florida
Posts: 234
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Re: Check engine light.
Btw, transmission has fluid in it. just in case that was your first thought lol.
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Jesse.
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04-28-2012, 09:04 AM
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#3 |
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Registered User
Join Date: Sep 2010
Location: Kerrville, TX
Posts: 87
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Re: Check engine light.
Have you checked to see if any codes are stored? Here's a thread that'll tell you how, if you haven't done it before.
http://67-72chevytrucks.com/vboard/s...d.php?t=405077 I have that symptom - EGR code shows up. If that's the case, be careful about which EGR valve you buy. Not sayin it is....just a possibility. |
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