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Diagnostic Help -- Is it really my MAF?

strawfordt
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strawfordt Member

strawfordt

Posted
Posted

Help please,

I have a 98 Boxster Cdn model. Last year I had MAF issue and was able to verify that the Maf was bad by unplugging the MAF and having the idle and drive conditions return to normal. I cleaned my MAF per the instructions I found here and everything has been great since.

Three days ago I got the dreaded P1128 & P1130 codes but my car was running great. I cleared the codes yesterday and then tried to start up. I thought my car was going to die. It barely held idle RPMS and did not rev out of idle at all. More gas caused near stall conditions. The ECM never threw an new code. I went back into the engine compartment, cleaned and re-installed the MAF. I started up again and... the same issue. I then un-plugged the MAF sensor to see if this solved the problem or at least improved the problem and I have the same idle and performanace issue.

If the car threw a new code I would know what to do.

Was my sequence wrong. Should I try all the reapairs before resetting the ECM?

Does anyone have a good suggestion?

Anxious for you thoughts and to get my Box running again.

Thanks for reading and I hope to receive some good ideas and advice

Tom

seafeye Member

seafeye

Posted
Posted (edited)
Help please,

I have a 98 Boxster Cdn model. Last year I had MAF issue and was able to verify that the Maf was bad by unplugging the MAF and having the idle and drive conditions return to normal. I cleaned my MAF per the instructions I found here and everything has been great since.

Three days ago I got the dreaded P1128 & P1130 codes but my car was running great. I cleared the codes yesterday and then tried to start up. I thought my car was going to die. It barely held idle RPMS and did not rev out of idle at all. More gas caused near stall conditions. The ECM never threw an new code. I went back into the engine compartment, cleaned and re-installed the MAF. I started up again and... the same issue. I then un-plugged the MAF sensor to see if this solved the problem or at least improved the problem and I have the same idle and performanace issue.

If the car threw a new code I would know what to do.

Was my sequence wrong. Should I try all the reapairs before resetting the ECM?

Does anyone have a good suggestion?

Anxious for you thoughts and to get my Box running again.

Thanks for reading and I hope to receive some good ideas and advice

Tom

I am sure there are plenty of more qualified people here that will be able to help but here is my $.03.

The MAF does not affect your idle. So if disconnected you should still be in the idle range. If you are still having idle problems then this would lead me to believe you have to clean your throttle body or you fouled your plugs, bad gas etc...

So, clean the TB and check your plugs. You will only be able to clean the MAF a couple of times. Very delicate. You could even run your car without the MAF, but doing so could, most likely would harm your Cat converters. That will get pricey. But you can run the car without it for a short period of time, and just suffer reduced performance and fuel economy to get to a dealership to buy that MAF.

Edited by seafeye

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