flashing ecm (computer) what ever u call it quick question - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 07-30-2005, 11:54 AM   #1
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Default flashing ecm (computer) what ever u call it quick question

ok i checked out the tech section about pulling codes from the puter cause today i went out to get into my car and the check engine light stayed on. well it flashed code 21: Throttle position(TPS)voltage high and it flashed code 66 but there is nothing in there for code 66??? and how does the tps get to much voltage??? please help. message me at yahoo messager (same name) or reply here. thanks




1993 se 145k
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Old 07-30-2005, 12:11 PM   #2
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For your year 21 should be the TPS, and 66 should be Low refigerant..... Need someone with a 93 service manual to verify

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Old 07-30-2005, 12:13 PM   #3
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another thing that i noticed is that it stuters when running (just started) runs smoth then blah then back up over and over sorta like a messed plug or wire. but they are only like 4 or 5 months old.



just found this http://www.troublecodes.net/GM/92-93_38SC.shtml

it has codes all the way to 99 and 66 is for the ac
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Old 07-30-2005, 12:23 PM   #4
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Quote:
Originally Posted by its840
my dad just told me this Code 66 Engine Knock Sensor Input Fault any ideas??
I'm quite sure almost 100% really.... 66 is for a low refrigerant charge...

22 is for TPS high voltage indicated...


If you had a knock sensor code it would be a code 43

The EST( Electronic Spark Timming ) Circuit would be a code 42...

I just want someone with a 93 Service manual to verify so that we are 100% sure...

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Old 07-30-2005, 12:25 PM   #5
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ya i called him out on that one after i found that web site that why i deleted the post.
ok now any ideas on how to get the tps to get the right voltage and any idea about teh rough idle?
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Old 07-30-2005, 12:30 PM   #6
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A bad TPS can make the car do some not so happy things, and affecting the idle is one of them...

You'll have to look for a member

Damemorder


He may be able to help you more with that 93...

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Old 07-30-2005, 12:32 PM   #7
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is it just the sensor or is it the whole throtle body?? im thinking just sensor
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Old 07-30-2005, 12:35 PM   #8
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Quote:
Originally Posted by its840
is it just the sensor or is it the whole throtle body?? im thinking just sensor
Should be just the sensor, but you may have to remove the throttle body to be able to replace the sensor... If you have to remove it than it would be a good idea to get a new gasket and do a through cleaning of the throttlebody

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Old 07-30-2005, 12:48 PM   #9
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thank you much for all of the help. off to the parts store i shall go. 55 bucks at auto zone
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