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Cold start problem

Tiny
GM PROBLEMS2
  • MEMBER
  • CHEVROLET BLAZER
I have a 95 s-10 Chevy Blazer 4x4 4.3L v6 w/180000 that is very sluggish in the morning. Just gave it a full tune up which fixed the really hard or sometimes not starting at all problem, but is still hard to start first thing in the morning and at the end of the work day. There is no check engine light on or any thing else obvious that I could find. I checked for vacuum leaks and other loose or broken hoses and found none. Other than the cold start problem it runs great. I’m just wondering where to go from here. Any and all help is as usual, greatly appreciated. Thanks.
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Tuesday, November 6th, 2007 AT 4:16 PM

3 Replies

Tiny
MERLIN2021
  • MECHANIC
  • 17,250 POSTS
Check the electronic coolant temp sensor, this acts like a choke on FI systems.
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Tuesday, November 6th, 2007 AT 4:43 PM
Tiny
GM PROBLEMS2
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  • 19 POSTS
Where is it exactly and what do I do to check it? Thanks again.
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Tuesday, November 6th, 2007 AT 5:10 PM
Tiny
MERLIN2021
  • MECHANIC
  • 17,250 POSTS
It's on the head or block, take a DVOM, check resistance cold, and hot, if there is little change in the readings, it no good! As the car warms the resistance will drop.
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Tuesday, November 6th, 2007 AT 5:24 PM

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