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jet
User

Sep 25, 2010, 11:02 PM

Post #26 of 39 (1706 views)
Re: Focus down on power Sign In

what they were thinking was maybe it was the IAC circuit in the computer. Not the idle air control, and I may be wrong on the exact initials for it. But something like that. It is starting to seem like a computer problem since the top end ignition (coil,wires,plugs) is going fine.


jet
User

Sep 25, 2010, 11:09 PM

Post #27 of 39 (1706 views)
Re: Focus down on power Sign In


In Reply To
How much did this diag cost and more importantly how long did it take to confirm all this stuff as good and the PCM as defective??

Diag is $85 so far and were not positive that the computer is the problem. What we do know is the engine is not getting proper ignition. Fuel pump is good, fuel pressure is good, everything else is good, so that is why we are thinking that hte computer is/has a glitch.


Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

Sep 26, 2010, 6:34 AM

Post #28 of 39 (1699 views)
Re: Focus down on power Sign In

Thx Sidom - on file now,

Tom



Sidom
Veteran / Moderator
Sidom profile image

Sep 26, 2010, 10:27 AM

Post #29 of 39 (1688 views)
Re: Focus down on power Sign In

Well as long as they are testing out the components then that's a good sign. I just wanted to make sure it wasn't someone that plugged a scanner into the DLC, pulled the codes and then said, well everything looks good it's gotta be a PCM..

Some of the basic common failures you might be able to narrow down online. Once all the basics have been confirmed as good then that's the point where you really need to get your hands & meters on the car.

I'm just curious what results they got and from what system to flag the ign system. It's very possible this is an ign problem and I suppose it's possible you have a bad PCM, this just isn't a problem I've normally seen with a bad PCM in my area. Once again I just have to go off what info is supplied and can't see the car but from what you've posted, if the timing belt is in time and this is a ign problem it seems more like it would be a resistance problem in one of the circuits.........But I'm not there to see to car run or how it's acting.....

I'm assuming the marks were checked on the belt and all is ok there....... I didn't see anywhere in your post where this was done.....

I would also unplug the MAF and drive it to see if default settings made any change...... Some cars do better than others with MAFs disconnected but I would still try it keeping in mind this will set a MAF code.....


(This post was edited by Sidom on Sep 26, 2010, 10:29 AM)


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Sep 26, 2010, 12:03 PM

Post #30 of 39 (1682 views)
Re: Focus down on power Sign In


Quote
I'm assuming the marks were checked on the belt and all is ok there....... I didn't see anywhere in your post where this was done.....


This engine has no timing marks.



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



Sidom
Veteran / Moderator
Sidom profile image

Sep 26, 2010, 1:38 PM

Post #31 of 39 (1678 views)
Re: Focus down on power Sign In

Not in the conventional sense but it still needs to be checked, especially if the belt looks as bad as appeared it might of in the picture.
One of the cams jumping a tooth could definitely cause this problem so I would want to rule it out as possible problem early on.


speed
User

Sep 26, 2010, 8:49 PM

Post #32 of 39 (1667 views)
Re: Focus down on power Sign In


In Reply To


hey just lookin and saw this and looked, noticed they do not have the chevy 3.8L V6 my 96 camaro has. its the 3800 series II motor. just wonderin if ya knew why?





GM ASEP 26 SCC Milford ASE certified in Brakes and Electrical on Thursday April 5th 2012

(This post was edited by Hammer Time on Sep 27, 2010, 2:40 AM)


Sidom
Veteran / Moderator
Sidom profile image

Sep 26, 2010, 9:02 PM

Post #33 of 39 (1666 views)
Re: Focus down on power Sign In

Look at the link and study it carefully...........

You know the aleady know the answer to this question Wink


(This post was edited by Sidom on Sep 26, 2010, 9:03 PM)


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Sep 27, 2010, 2:41 AM

Post #34 of 39 (1656 views)
Re: Focus down on power Sign In


Quote

In Reply To
http://www.lambsauto.com/belts.htm

hey just lookin and saw this and looked, noticed they do not have the chevy 3.8L V6 my 96 camaro has. its the 3800 series II motor. just wonderin if ya knew why?




I bet you're really going to regret asking that question............



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



speed
User

Sep 27, 2010, 8:06 PM

Post #35 of 39 (1646 views)
Re: Focus down on power Sign In

lol yeah.........whatchya mean? i didint ask nothin CoolBlush





GM ASEP 26 SCC Milford ASE certified in Brakes and Electrical on Thursday April 5th 2012


Sidom
Veteran / Moderator
Sidom profile image

Sep 27, 2010, 8:07 PM

Post #36 of 39 (1645 views)
Re: Focus down on power Sign In

It happens...........Wink

I'm sure you realized that chart was for engines that have timing belts & not chains......


speed
User

Sep 27, 2010, 8:31 PM

Post #37 of 39 (1641 views)
Re: Focus down on power Sign In

yeah after you both said to reread the link i felt stupid haha guess my parents are right when they say i do need english in the future Wink





GM ASEP 26 SCC Milford ASE certified in Brakes and Electrical on Thursday April 5th 2012

(This post was edited by speed on Sep 27, 2010, 8:32 PM)


Sidom
Veteran / Moderator
Sidom profile image

Sep 27, 2010, 8:42 PM

Post #38 of 39 (1637 views)
Re: Focus down on power Sign In

No reason to feel stupid.......30+ plus years I still do "stupid" stuff.....

I was 95% sure you knew, but since you didn't come back & bust my b*lls about it I figured I better say just in case of that other 5%.....

A regular poster I would've just answered the question......

With you, I knew you knew the answer, plus you don't get treated like a regular poster any more.......You get "trashed" on just like the rest of us.................sry......Cool


speed
User

Sep 27, 2010, 8:47 PM

Post #39 of 39 (1633 views)
Re: Focus down on power Sign In

its all good im glad i get thrashed on and not a "regular poster" i like that hehe. makes me feel like part of the gang Sly and after i posted the question i was liek i wonder if its cuz i have a chain but i just let it go too lazy to change it hahaLaugh





GM ASEP 26 SCC Milford ASE certified in Brakes and Electrical on Thursday April 5th 2012






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