'92 GTZ might need new ECM. Please help diagnose.

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jjaquu
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'92 GTZ might need new ECM. Please help diagnose.

Post by jjaquu »

I bought a Beretta recently but I have had some problems. Over heating was caused by the fan not turning on, so I routed it directly to the battery and it still works. I failed emissions and the check engine light is on constantly. I've been doing some research and most signs point to my ECM. Now, obviously, them's is expensive, so I wanted to know: Is it in fact my ECM? And if so: Can I perform other actions to reset or reprogram it before resorting to total replacement?

Thanks! -Jake


ronaconda
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Re: '92 GTZ might need new ECM. Please help diagnose.

Post by ronaconda »

Have you pulled the trouble codes from the ECM???


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woody90gtz
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Re: '92 GTZ might need new ECM. Please help diagnose.

Post by woody90gtz »

I have never had an ECM fail that would even run the car. I've had two dead ECMs, and both killed the engine instantly like turning off a swtich. Attempted restart would just crank the starter without a hint of refiring.


91 "SS" - WOT 3400/5spd - 13.29@101.6 - World's fastest N/A FWD Beretta
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Asylum
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Re: '92 GTZ might need new ECM. Please help diagnose.

Post by Asylum »

I agree with Woody in that it is very unlikely to be the ECM.

Hell re-wiring the fan could trigger an engine light. It often doesn't take much.

Check the codes with a paper clip and go from there.


Eric

Asylum Motorsports
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'91 California Quad (Gone with just a bit of "Seller's Remorse".)
'92 3500 GT gone and not really missed. It was fun. Documented 13.47 N/A.
Cliff8928
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Re: '92 GTZ might need new ECM. Please help diagnose.

Post by Cliff8928 »

woody90gtz wrote:I have never had an ECM fail that would even run the car. I've had two dead ECMs, and both killed the engine instantly like turning off a swtich. Attempted restart would just crank the starter without a hint of refiring.
FWIW- My '7730 would cut out with any throttle input (idle was fine). I would reach over, tap on the ECM and it would be back to normal for a while. So they can fail and still run.


Cliff Scott
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