Where is the Quad 4 module? - Page 7 - 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 04-06-2005, 05:44 PM   #61
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I would suggest getting something like Autolite 605'* (available at Wal-Mart for $1.97 for two) and gapping them at .055-.057" (as per Nate'* suggestion). They're cheap, and will suit you well -they're the same as what I run now, and what alot of the GTP guys run without problem.
i bought these yesterday, but are they 1 range colder? 605'* are what the book at walmart recommended for stock
I didn't know they were the stock grade, but Lil Jon on MNCGP uses them with his GTP that is modded more than alot of us, and say'* he'd suggest them over NGK'* -which he said aren't bad, just more expensive. I might consider NGK TR-55'* my next plug change to see if it effects anything.
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Old 04-06-2005, 07:41 PM   #62
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Originally Posted by jr's3800
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Don't throw parts at it, f*** waste of money bro... Between this and gas, and women, you're never gonna get the mac.
shut up richard....do i need to start a poll

EDIT

here is a vid of how my engine occationally starts up... pretty bad... you can really hear it in the beginning...sorry its dark out

hopefully the tuneup items above will fix it

http://www.putfile.com/media.php?n=idling
Damn.... I don't like the way that starts.... Does it do that all of the time?

Next time before you start it cycle the ignition on and off several times, giving it long enough for the fuel pump to stop.. Then try and start it...

Got a fuel pressure tester? Lets rule things out 1 by one here..

What have you done so far?
like i said before....it starts like that occasionally...like once every 10 times... usually after it had just ran, and had about a 20 min break...

dad checked vacuum leaks, other than that...havent done much... its never done the problem in front of him, so its hard to diagnos it...hopefully the vid will show him..
I'm leaning towards FPR on this one....Almost identical to what my car does....especially if it'* really warm.
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Old 04-06-2005, 08:44 PM   #63
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are you saying its bad, or needs to be cleaned/fixed... cuz isnt this an expensive part?
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Old 04-06-2005, 08:47 PM   #64
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when you have the time... Can you get hold of a Fuel pressure tester? and check to see if the Fuel pressure remains within its specified range? I think on the 94-95 SSEi is should fall in the 41-47 psi range...

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Old 04-08-2005, 09:30 PM   #65
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tune up is tomorrow

stuff i have ready=dads fuel pressure tester...

used coil pack from marty
new o2 sensor
autolite 605 copper
taylor red 8mm wires
180* drilled tstate
oil pressure sending unit
pcv valve
fuel filter

i had a though today that maybe the crankshaft sensor would be causing this bad idle? but i guess we will see after the tune...

update on tranny...its fucked....

from a 20 roll, turning left is pure slippage....while right is fine...

from a stop, total bog, slipping 20% of the time...

not gonna mess with it anymore.....just waiting on nates tranny...

HURRY NATE!!!!
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Old 04-09-2005, 02:11 AM   #66
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Andy...that sucks on the tranny...sorry to hear it. At least Nates donating a good one....there'* a plus.

I was up with my buddy the mechanic tonight. Borrowed his Snap on Scanner and when he'* showing me how to do it (like a 5 year old couldn't figure it out was the look I was giving him) he checks codes. P670 quad 4. He says... the computer is on it'* way out usually when quad 4 comes up. He worked at Pontiac for like 10 years til about 98. He knows our cars very well. We cleared my code...I start car..it idled like crap til I put it in gear and has been fine since...20 minute drive no new code.

Yours kept coming back right? DAn was saying that quad 4 is the sympton the computer registers when it'* checking out and it'll misfire etc BADLY usually when computer puking and quad 4 come up. Plus side is he also told me two other things. First...he'll fix your car for you...but then he said something about $900 ...I think the beer was talking. Secondly he said last time he bought a new computer...brand new it was only about $85.

Sorry if it ends up right...but at this point I bet you'd accept an $85 fix.
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Old 04-09-2005, 11:13 AM   #67
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Andy...that sucks on the tranny...sorry to hear it. At least Nates donating a good one....there'* a plus.

I was up with my buddy the mechanic tonight. Borrowed his Snap on Scanner and when he'* showing me how to do it (like a 5 year old couldn't figure it out was the look I was giving him) he checks codes. P670 quad 4. He says... the computer is on it'* way out usually when quad 4 comes up. He worked at Pontiac for like 10 years til about 98. He knows our cars very well. We cleared my code...I start car..it idled like crap til I put it in gear and has been fine since...20 minute drive no new code.

Yours kept coming back right? DAn was saying that quad 4 is the sympton the computer registers when it'* checking out and it'll misfire etc BADLY usually when computer puking and quad 4 come up. Plus side is he also told me two other things. First...he'll fix your car for you...but then he said something about $900 ...I think the beer was talking. Secondly he said last time he bought a new computer...brand new it was only about $85.

Sorry if it ends up right...but at this point I bet you'd accept an $85 fix.
Funny you should metion that....

My 95 SE uses the exact same PCM as his SSEi... I have been through 2 of those punkers... The factory one left the car idling like complete crap... And I had a code P1361, I think it was for the Ignition control module not toggling.... Funny it was the PCM causing it... Car would even backfire at time... Sometimes it just wouldn't start, and when it did it ran like a cold dead fish...

The second one got interesting, The only code I could find was for Oil Life Monitor<---- Left me thinking WTF as I had a simple SE bonneville... The car would shut off for a split second at a time while driving, and the gages would freak out, tranny was confused about its shifts, and at time the car would just shut off while idling... Crabk it back up and it might run for 2 minutes and shut off again.... The PCM had serious issues trying to communicate with the scantool.... Went and got another PCM and to this day I have had no further issues..

The first PCM was the original, the second was an Advance Auto parts Reman unit( Cardone )

But I'm thinking being that he tried another PCM with the same results, the tranny may be about to puke...

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Old 04-09-2005, 11:19 AM   #68
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Holy crap...I forgot to mention the turn off for a second thing. He said that too...and I think it would happen when the quad 4 code set. Basically exactly as you described.

If you guys send a ticket...I'll send him out there. Just hope the tranqulizers work good
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Old 04-09-2005, 11:23 AM   #69
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Holy crap...I forgot to mention the turn off for a second thing. He said that too...and I think it would happen when the quad 4 code set. Basically exactly as you described.

If you guys send a ticket...I'll send him out there. Just hope the tranqulizers work good
Yeah and the " Check Gages " would go , " Ding ding ding, ding, ding ding, ding ding ding, "

Oh it was just too freaky, and I had no idea that that PCM was soo controling... Now its funny as H***, but I was a bit hot when it happened....lol

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Old 04-09-2005, 11:27 AM   #70
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Since my overheat when the water pump to intake tube (that stupid plastic one under the SC) broke and I ignored my already fluttering gauges. I flinch badly everytime I hear that stuipid ding ding ding... cause I ignored it that day assuming the pcm was monitoring the gauges not actual inputs. Luckily gut reaction said...if the gauges are messed up and the dinger is dingin it'* worth a quick stop and look under the hood, even though it could throw of the gas mileage...lol
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