help please help need answers fast help
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Joined: Aug 2001
Posts: 50
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From: Alabama
Car: 1990 Camaro RS
Engine: 305 soon to be 383
Transmission: 700R4
help please help need answers fast help
hey i just got through testing my Diagnostic Connector and it came up with code 23 for the fuel injection model and it says it is in the Manifold Air Temperature Sensor it says Poor electrical connection, open or short circuit; defective MAT(Manifold Air Tempature sensor)sensor; defective ECM .....>>>>>> what should i do
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Joined: Feb 2000
Posts: 1,198
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From: Bound Brook, NJ USA
Car: 89 IROC-Z
Engine: 383
Transmission: 700R4
Well I don't know how to test the MAT but here's a way to test your ECM.....with the car running take the computer down from under the dash and free it from the plastic bracket. Try to flex the ECM lightly and tap it with the palm of your hand. If the car stalls or starts running rough then your ECM is more than likely toast.....just don't use too much force when you're doing this test!
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Riccioli Performance Motorworks
--RPM Racing--
Getting there.....383 with Super Ram, Bosch 24# SVO's, MSD, Edelbrock 58 mm TB, 700R4 tranny, Eibach springs, Koni 12 way adjustable shocks and struts, and more!! Now let's pray it runs when it's all back together!!!!
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Riccioli Performance Motorworks
--RPM Racing--
Getting there.....383 with Super Ram, Bosch 24# SVO's, MSD, Edelbrock 58 mm TB, 700R4 tranny, Eibach springs, Koni 12 way adjustable shocks and struts, and more!! Now let's pray it runs when it's all back together!!!!
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Joined: Dec 1999
Posts: 1,237
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From: Reno, NV
Car: yep
Engine: uhuh
Transmission: sure does
<font face="Verdana, Arial" size="2">Originally posted by Paul Riccioli Jr:
Well I don't know how to test the MAT but here's a way to test your ECM.....with the car running take the computer down from under the dash and free it from the plastic bracket. Try to flex the ECM lightly and tap it with the palm of your hand. If the car stalls or starts running rough then your ECM is more than likely toast.....just don't use too much force when you're doing this test!
</font>
Well I don't know how to test the MAT but here's a way to test your ECM.....with the car running take the computer down from under the dash and free it from the plastic bracket. Try to flex the ECM lightly and tap it with the palm of your hand. If the car stalls or starts running rough then your ECM is more than likely toast.....just don't use too much force when you're doing this test!
</font>
I have done this one and it does work if performed with a gentle touch.
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