LS1TECH - Camaro and Firebird Forum Discussion

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-   -   Car won't run without maf (https://ls1tech.com/forums/pcm-diagnostics-tuning/337592-car-wont-run-without-maf.html)

Orange Juice Jun 16, 2005 04:20 AM

Car won't run without maf
 
I have a 90/90 setup with the 85mm truck maf. When I unplug the maf the car will start but will not run. Am I doing something wrong? Do I just keep turning it over untill it learns enough to stay running?

Black02SS Jun 16, 2005 04:33 AM

Try reducing the first three columns of your VE table. It sounds like the car is running rich without the MAF and causing too much fuel. Also, make sure with the MAF plugged in that your IAC counts are where they need to be. (30-60)

405HP_Z06 Jun 16, 2005 07:27 AM


Originally Posted by Orange Juice
I have a 90/90 setup with the 85mm truck maf. When I unplug the maf the car will start but will not run. Am I doing something wrong? Do I just keep turning it over untill it learns enough to stay running?

Where's your IAT sensor? If it's in the MAF sensor unplugging it is contributing to your problem. Plug the MAF sensor back in and try setting the MAF Fail Frequency to 0.

WS6FirebirdTA00 Jun 16, 2005 08:33 AM

the truck sensor has it in the maf i think, just set the fail frequency to 0, that is if you are using the IAT sensor in theTB, we need to know what kind of car this is for

ORANGE JUICE1 Jun 16, 2005 09:51 AM

It is a 2001 SS, the truck maf was added when the 90/90 setup was installed. Al the work was done by Futral

bmfcamaro Jun 16, 2005 10:47 AM

is it an a4. they have had problems running sd?

WS6FirebirdTA00 Jun 16, 2005 11:16 AM

then the maf doesnt use the IAT sensor. im sure you have some things that are out of wack. try to reset the fuel trims before you start it up


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