I may have finally solved my MAF problems
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From: Readsboro, VT
Car: 85 IROC-Z / 88 GTA
Engine: 403 LSx (Pending) / 355 Tuned Port
Transmission: T56 Magnum (Pending) / T5
Axle/Gears: 3.42 / ?
I may have finally solved my MAF problems
For those who follow the saga..
I finally got the car to start and run with the Wells MAF. It required replacing the computer AND the power relay. It figures that I'd have 2 separate problems, both operating intermittantly just to keep me confused. I changed the ECM the other night, and the car started (which was an improvement), THEN threw a code 34. It never behaved that way with the Wells before, so I had yet another different type of response from this POS. So anyway, after testing the voltage and grounds at the MAF plug, and finding nothing wrong, I threw a spare relay on there just for sh*ts and grins. No more code 34. I went out tonight and started it again. It started up well and didn't toss a code.
So... I took the IROC computer and put it in the GTA. I started the car, and although it started and idled fine, it threw a code 34 right away.
It looks like the relay and the computer were both screwing with me.
Now if I can just figure out my IAC problems maybe this car will stop sucking long enough to take it for a ride.
I finally got the car to start and run with the Wells MAF. It required replacing the computer AND the power relay. It figures that I'd have 2 separate problems, both operating intermittantly just to keep me confused. I changed the ECM the other night, and the car started (which was an improvement), THEN threw a code 34. It never behaved that way with the Wells before, so I had yet another different type of response from this POS. So anyway, after testing the voltage and grounds at the MAF plug, and finding nothing wrong, I threw a spare relay on there just for sh*ts and grins. No more code 34. I went out tonight and started it again. It started up well and didn't toss a code.
So... I took the IROC computer and put it in the GTA. I started the car, and although it started and idled fine, it threw a code 34 right away.
It looks like the relay and the computer were both screwing with me.
Now if I can just figure out my IAC problems maybe this car will stop sucking long enough to take it for a ride.
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From: San Antonio, TX
Car: 1988 IROC-Z
Engine: L98 (350 TPI)
Transmission: MD8 (700 R4) + 3.42 LS1 Rear
Re: I may have finally solved my MAF problems
Originally posted by Jim85IROC
maybe this car will stop sucking long enough to take it for a ride.
maybe this car will stop sucking long enough to take it for a ride.
about damn time right....
glad to see you may have solved your probems.
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Joined: Jul 1999
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From: Readsboro, VT
Car: 85 IROC-Z / 88 GTA
Engine: 403 LSx (Pending) / 355 Tuned Port
Transmission: T56 Magnum (Pending) / T5
Axle/Gears: 3.42 / ?
Originally posted by Ragtop89
Hopefully your struggles will come to an end soon.
Hopefully your struggles will come to an end soon.
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Joined: Mar 2002
Posts: 328
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From: Grand Rapids, Michigan
Car: Iroc-Z
Engine: 355 AFR'd HSR
Transmission: 700R4
You mean you don't even drive your car? I drove mine for months with a daily SES light being thrown by a Bad O2 sensor.
Good job on the diagnosis though man. I also made a major breakthrough recently. I found out that my low cruise speed "jerking" was being caused by the convertor locking up at roughly 20mph.
Reason: 3.73 gears without the correct driven gear in the tranny gave a false reading to the ECM. Convertor lockup point was 35 mph. So at 35 speedo mph, the convertor would lock up. Reality was that was really somewhere closer to 20-25 mph or so. WAY too low. So I changed it to reflect the real speed of my car and it went away. I was so giddy I almost peed myself!
A problem I was dealing with for 2 summers was finally gone with a few keystrokes.
Glad to hear it! :rockon:
Good job on the diagnosis though man. I also made a major breakthrough recently. I found out that my low cruise speed "jerking" was being caused by the convertor locking up at roughly 20mph.
Reason: 3.73 gears without the correct driven gear in the tranny gave a false reading to the ECM. Convertor lockup point was 35 mph. So at 35 speedo mph, the convertor would lock up. Reality was that was really somewhere closer to 20-25 mph or so. WAY too low. So I changed it to reflect the real speed of my car and it went away. I was so giddy I almost peed myself!
A problem I was dealing with for 2 summers was finally gone with a few keystrokes. Glad to hear it! :rockon:
Thread Starter
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iTrader: (2)
Joined: Jul 1999
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From: Readsboro, VT
Car: 85 IROC-Z / 88 GTA
Engine: 403 LSx (Pending) / 355 Tuned Port
Transmission: T56 Magnum (Pending) / T5
Axle/Gears: 3.42 / ?
Originally posted by RedIrocZ-28
You mean you don't even drive your car? I drove mine for months with a daily SES light being thrown by a Bad O2 sensor.
You mean you don't even drive your car? I drove mine for months with a daily SES light being thrown by a Bad O2 sensor.
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From: El Paso, Texas
Car: 1987 IROC Z
Engine: 350 TPI L98 block
Transmission: 700R4
I think you and I might be in a similar ****uation. My 87 IROC goes into limp home mode after ? I've yet to figure out why either.. Been trying to get another MAF on the boards here but got ****ed by this guy Joseph Croteau in MA. I don't have a lot of ends to spend so that robbery/loss was significant. I don't suppose anyone here lives in MA and is willing to regulate this fool for me ?
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Thread Starter
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iTrader: (2)
Joined: Jul 1999
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From: Readsboro, VT
Car: 85 IROC-Z / 88 GTA
Engine: 403 LSx (Pending) / 355 Tuned Port
Transmission: T56 Magnum (Pending) / T5
Axle/Gears: 3.42 / ?
What part of MA is he in? I'm not driving across the state, but I may be willing to visit him if he's nearby.
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From: El Paso, Texas
Car: 1987 IROC Z
Engine: 350 TPI L98 block
Transmission: 700R4
Wouldn't usually do this to a person, but he kept dragging it on for 2 months blaming it on his girlfriend, and then his work schedule.. etc..etc.
> > Joseph Croteau
> > 6 Federal St Apt 2
> > Haverhill Ma 01832
> > Joseph Croteau
> > 6 Federal St Apt 2
> > Haverhill Ma 01832
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