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2002 Chevy Silverado Jasper rebuilt

Tiny
REYINTN
  • MEMBER
  • 2002 CHEVROLET SILVERADO
  • V8
  • 2WD
  • AUTOMATIC
  • 170,000 MILES
I broke down coming home from x-mas vacation in Mississippi jusr 10 miles from Memphis. The tranny was winding and I couldn't get in gear. I had this before under warranty (@80,000 then) and the dealer said the sun-shield broke. They fixed it and now at 170 thousand I have the same thing but now dealer says its not thier problem, Alocal tow/auto center installed a Jasper re-built. But when I start it the idles go crazy, they told me the idle sensors need to recalculate and I should be fine. Well, i'm not fine it still does it and now my service engine light is on, please advise on what steps to take before I blow up.
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Sunday, January 20th, 2008 AT 11:40 AM

7 Replies

Tiny
DENNYP
  • MECHANIC
  • 1,823 POSTS
First, have it scanned for trouble codes. Let me know what you get.
We need a good starting point first.
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Monday, January 21st, 2008 AT 10:32 PM
Tiny
REYINTN
  • MEMBER
  • 4 POSTS
I got the codes from a local mechanic, they are po 171 and po174. A right bank lean fuel and left bank lean fuel. I replaced the fuel filter December 07. The first start up in the morning is when I get the high idle to low idle then eventually stall unless I rrev it a lil to maintain a idle. After that it seem alot better. The mechanic check for vacuum leak and found nothing. I appreciate your response, thanks
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Tuesday, January 22nd, 2008 AT 10:15 AM
Tiny
DENNYP
  • MECHANIC
  • 1,823 POSTS
You need to replace the intake manifold gaskets. They have a temperature related leak condition. This should fix it.
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Wednesday, January 23rd, 2008 AT 7:30 AM
Tiny
REYINTN
  • MEMBER
  • 4 POSTS
Hi, thanks again for your reply. How confident are you that this will fix it? Is it an expensive repair? Like I stated earlier, its does the high idle at the first start up in the morning, then next time I start to go somewhere it turns over at normal idle. Thanks again.
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Wednesday, January 23rd, 2008 AT 10:05 AM
Tiny
DENNYP
  • MECHANIC
  • 1,823 POSTS
This will fix it, and it's not too expensive.
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Wednesday, January 23rd, 2008 AT 11:42 AM
Tiny
REYINTN
  • MEMBER
  • 4 POSTS
Does the Oxygen sensor cause the same symptons? Like I mentioned it idles radically on cold starts ( in Morning) once its warmed up it idles fine. Thanks for all your help.
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Thursday, January 24th, 2008 AT 2:03 PM
Tiny
DENNYP
  • MECHANIC
  • 1,823 POSTS
No. There is even a service bulletin on the intake gasket condition.
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Thursday, January 24th, 2008 AT 7:58 PM

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