1994 chevy lumina apv qdm code
#1
1994 chevy lumina apv qdm code
i have a code of 1670 qdm 4 failure
van is a 1994 chevy lumina apv with v6 3.8 motor problem im haveing is van will allways strt but then sometimes stall out and when it does check engine light is on so if you turn key off and restrt it will then start and run no check engine light but while driving it sometimes it will stall and then you have to pull over put in park and restart then your good again for a while this happens all the time
if anyone knows what i should do or check please let me know im lost
van is a 1994 chevy lumina apv with v6 3.8 motor problem im haveing is van will allways strt but then sometimes stall out and when it does check engine light is on so if you turn key off and restrt it will then start and run no check engine light but while driving it sometimes it will stall and then you have to pull over put in park and restart then your good again for a while this happens all the time
if anyone knows what i should do or check please let me know im lost
#2
Retired
Check basics first. Air, fuel, spark.
Start with verifying fuel pressure with a fuel pressure tester connected to the schrader valve on the fuel rail.
Start with verifying fuel pressure with a fuel pressure tester connected to the schrader valve on the fuel rail.
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2002 *-10 5.7 V8
2023 Jeep Rubicon Diesel
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2002 *-10 5.7 V8
2023 Jeep Rubicon Diesel
#5
Senior Member
True Car Nut
https://www.gmforum.com/1992-1999-91...stions-287825/
This is a pretty extensive round with P1670 in a Bonneville. Looks to be A/C, Fan High/low, and MIL.
Given the symptoms, I would check charging system, chassis grounds, primary battery cables for corrosion, etc. It sounds like this case may lean towards a bad PCM.
I would also keep an eye on the temperature too, wouldn't want it to quit running fans while stopped and the temperature run away from you
This is a pretty extensive round with P1670 in a Bonneville. Looks to be A/C, Fan High/low, and MIL.
Given the symptoms, I would check charging system, chassis grounds, primary battery cables for corrosion, etc. It sounds like this case may lean towards a bad PCM.
I would also keep an eye on the temperature too, wouldn't want it to quit running fans while stopped and the temperature run away from you
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#6
Retired
Jesus, I remember that monstrosity.
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2002 *-10 5.7 V8
2023 Jeep Rubicon Diesel
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2002 *-10 5.7 V8
2023 Jeep Rubicon Diesel
#7
Senior Member
True Car Nut
#8
pcm change
https://www.gmforum.com/1992-1999-91...stions-287825/
This is a pretty extensive round with P1670 in a Bonneville. Looks to be A/C, Fan High/low, and MIL.
Given the symptoms, I would check charging system, chassis grounds, primary battery cables for corrosion, etc. It sounds like this case may lean towards a bad PCM.
I would also keep an eye on the temperature too, wouldn't want it to quit running fans while stopped and the temperature run away from you
This is a pretty extensive round with P1670 in a Bonneville. Looks to be A/C, Fan High/low, and MIL.
Given the symptoms, I would check charging system, chassis grounds, primary battery cables for corrosion, etc. It sounds like this case may lean towards a bad PCM.
I would also keep an eye on the temperature too, wouldn't want it to quit running fans while stopped and the temperature run away from you
#9
Retired
It has to be programmed based off your VIN#.
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Retired Administrator
2002 *-10 5.7 V8
2023 Jeep Rubicon Diesel
Retired Administrator
2002 *-10 5.7 V8
2023 Jeep Rubicon Diesel
#10
Senior Member
True Car Nut
This particular application has a prom that gets transferred from the old pcm to the new one.
If rockauto is to be believed, the PCM is interchangeable with all 94-95 GM 3.8s EXCEPT the 94-95 Buick Regal (frikkin yay :eyeroll: )
If rockauto is to be believed, the PCM is interchangeable with all 94-95 GM 3.8s EXCEPT the 94-95 Buick Regal (frikkin yay :eyeroll: )