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zieman
Novice
Sep 7, 2010, 5:47 AM
Post #1 of 2
(2753 views)
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need help dtc 26& 27
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i have 93 pontiac grand am 3.3L 150,000 miles. pulled codes 26&27 mechanic told me it was a bad computer. changed that no difference. when u put it in drive spits and sputters bad ,but when in reverse runs awesome all the info i have said the quad driver module controls tcc switch , egr , purge control soleniod , and check engine light. can thee tcc soleniod be bad
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Sidom
Veteran
/ Moderator
Sep 9, 2010, 8:40 PM
Post #2 of 2
(2735 views)
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Re: need help dtc 26& 27
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You would want to take care of the trans code 1st before making any decisions on the PCM.... The trans code could be making the 26 pop up.....
The problems you describe could be a bad solenoid. If they fail mechanical they don't always set a code.... So I'd check the solenoid 1st and then trace down the 27 code, fix the problem and see if the 26 code was still there....
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