Maybe someone can help me here
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Maybe someone can help me here
Just picked up another 400. This one a 93 w/ 135,000 miles. All services don at 120,000 miles.
I'm experiencing the hesitation around 1100-1500 rpm like my other. I had my machanic look it over, and he said he gets a DTC 31 . We tried a used Volume Air Flow Meter, but no haps. He told me if a new Volume Air Flow Meter doesn't solve the problem the problem is the ECM. He gave me a printout w/ the circuit desrciption, diagnostic chart, and inspection procedures.
My question is if I spend the cash to get a new Volume Air Flow Meter and it doesn't cure the problem, how much is a new ECM? Or better yet, can I upgrade to an aftermarket stand alone system?
Thanks
Mousiee
I'm experiencing the hesitation around 1100-1500 rpm like my other. I had my machanic look it over, and he said he gets a DTC 31 . We tried a used Volume Air Flow Meter, but no haps. He told me if a new Volume Air Flow Meter doesn't solve the problem the problem is the ECM. He gave me a printout w/ the circuit desrciption, diagnostic chart, and inspection procedures.
My question is if I spend the cash to get a new Volume Air Flow Meter and it doesn't cure the problem, how much is a new ECM? Or better yet, can I upgrade to an aftermarket stand alone system?
Thanks
Mousiee
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Originally Posted by Tammy
What type of "400" ?
Get a second opinion. Sometimes different eyes result in a different analysis. Used parts are sometimes expected to fail.
Get a second opinion. Sometimes different eyes result in a different analysis. Used parts are sometimes expected to fail.
I took it to another mechanic and he insist nothing is wrong with it. He said it may be the spark plug wires, but they were done last year.
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Originally Posted by cliffud
i would have the mechanic check the EGR valve.
They left a old Air Flow Meter under my hood. I installed it and reset the ecu. When I started the car up the check engine light came right on when the rpms dropped. Then I re-installed the one that was in there and reset the ecu; no check engine light. The car ran great for a while then the hesitation came back.
The DTC no. from the printout the mechanic gve me is 31 and the Diagnostic Trouble Code Detecting Condition says:
All conditions below are detected.
(a) No volume air flow meter signal to ECM for 2 sec. when engine speed is above 300 rpm.
(b) engine stall
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