Engine Speed Problem\ Engine dies
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Joined: Jun 2017
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Engine Speed Problem\ Engine dies
Hi
My name is Thorsten and I'm from Hamburg Germany. Please excuse my poor English. A year ago I took my 92 V6 Firebird for a road trip, since then there are constantly issues. I have renewed several parts during the winter break, but there's no improvement. At each traffic light it is between 300-1000RPM before the engine shuts down. I noticed that the battery voltage on the display drops to 13V. Same thing happens as soon as i try to go walking speed. But if I switch at the traffic light the transmission on P remains quiet in the 600-700RPM range. I suspected that this is the infamous training phase, however, how long should the phase last? Do I have to change the ignition after I change the TPS and IAC? I really do not know what to do anymore.
Greetings Thorsten
My name is Thorsten and I'm from Hamburg Germany. Please excuse my poor English. A year ago I took my 92 V6 Firebird for a road trip, since then there are constantly issues. I have renewed several parts during the winter break, but there's no improvement. At each traffic light it is between 300-1000RPM before the engine shuts down. I noticed that the battery voltage on the display drops to 13V. Same thing happens as soon as i try to go walking speed. But if I switch at the traffic light the transmission on P remains quiet in the 600-700RPM range. I suspected that this is the infamous training phase, however, how long should the phase last? Do I have to change the ignition after I change the TPS and IAC? I really do not know what to do anymore.
Greetings Thorsten
Thread Starter
Junior Member
Joined: Jun 2017
Posts: 11
Likes: 0
Re: Engine Speed Problem\ Engine dies
Hello, or as we say in Hamburg Germany Moin!
I did 2 videos of the problem so that you even can understand what I mean.
The parts which I have replaced:
TempSensor
EGR
TPS
Alternator
IAC
No fail codes over the SES, the ignition is 10° by disconnect EST.
When Engine is warm gear in D (500-650RPM)
When engine is warm gear in P (800RPM)
Greetings
I did 2 videos of the problem so that you even can understand what I mean.
The parts which I have replaced:
TempSensor
EGR
TPS
Alternator
IAC
No fail codes over the SES, the ignition is 10° by disconnect EST.
When Engine is warm gear in D (500-650RPM)
When engine is warm gear in P (800RPM)
Greetings
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Joined: Jan 2000
Posts: 19,659
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Re: Engine Speed Problem\ Engine dies
Varying idle RPM is frequently related to inconsistent idle air. This could be due to the IAC, wear in the throttle body, internal or external vacuum leaks, and ECM problems.
Replacing the IAC should eliminate that possibility. Replacing the EGR should eliminate it potential for being a vacuum leak, but only if the replacement valve was of the correct type. The EGR valve control wire connector can be temporarily be unplugged for testing, but it will likely set an error code.
Replacing the IAC should eliminate that possibility. Replacing the EGR should eliminate it potential for being a vacuum leak, but only if the replacement valve was of the correct type. The EGR valve control wire connector can be temporarily be unplugged for testing, but it will likely set an error code.