Engine runs poorly when cold

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JaredJHuffman

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Joined
Aug 10, 2005
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Location
Grand Rapids, MI
'95 ATX

First of all, let me say that this problem I am going to describe is not the usual performance loss due to a car not being warmed up. This is something worse.

As I attempt to accelerate I feel a lag. At most extreme cases this could **** the car back and forth and (with steady accelerator) feels as though the fuel is not constant at all. The problem only seems to occur above 3000 rpms, and it causes less problems in the higher gears. Also, it seems to run much better once the temp is above the lower tick mark, but this could also take as much as 15 minutes to get going. I don't think it warms up from idling. The problem seems to have been getting progressively worse over the past few weeks.

This may be unrelated, but the car will tend to **** or pause for a second shifting into second gear at 6800 rpms as though the fuel cut-off is reached just as it tries to shift.

I pulled the EEC codes yesterday with the paperclip technique with no useful codes to report.

Thanks for any help you can provide, I'd like to be able to pull into traffic without fear of getting rear-ended.

-Jared J Huffman
 

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