code 42
12-27-2014, 06:29 PM
#17
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Re: code 42
Hey Fred thank you now we have the cooling problem solved turns out he put the wrong t stat in that short one u had in the pic wow lol.car is staying between 180 and 196 heck yea.
But now car is backfiring really bad after warm up,and i got trouble code 36 now,i know that has something to do with the distributor and i heard a lot about the code 36,found out my mechanic put in a AC Delco remanufactured distributor in,and we both agreed at what i wanted a new one,i was right there when he ordered it,and he compared on his ordering that a AC delco remanufactured one was 500, and a new one was 300. I told him get the new one so i dont have to worry of it going bad
Im like why can't he get this car running perfect,always something after another dude,it seems like he doesnt know what he's doing. What kind of good distributors are good ones where there is no backfiring or trouble codes,I dont care the cost i just want my car back im going crazy!!!!
But now car is backfiring really bad after warm up,and i got trouble code 36 now,i know that has something to do with the distributor and i heard a lot about the code 36,found out my mechanic put in a AC Delco remanufactured distributor in,and we both agreed at what i wanted a new one,i was right there when he ordered it,and he compared on his ordering that a AC delco remanufactured one was 500, and a new one was 300. I told him get the new one so i dont have to worry of it going bad
Im like why can't he get this car running perfect,always something after another dude,it seems like he doesnt know what he's doing. What kind of good distributors are good ones where there is no backfiring or trouble codes,I dont care the cost i just want my car back im going crazy!!!!
12-28-2014, 08:35 PM
#19
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Re: code 42
ok thank u but does is code 36 referred to the distributor as being bad tho,because im not dealing with this distributor problem code and just want the car to not backfire and engine light to come on
12-29-2014, 11:18 AM
#20
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Re: code 42
Hard to understand the question with the typo's....
DTC 36 indicates a loss of high resolution pulse signal from the optical cam position module in the Opti. Although the factory manual indicates the engine will run fine without it, Gary's testing has shown it can cause problems, including shutting the engine down.
To keep the SES light from coming on, you have to fix the high resolution pulse problem. Whether that will fix the backfiring, I can't say.
Have you checked the Opti harness connector for corrosion or damaged pins?
DTC 36 indicates a loss of high resolution pulse signal from the optical cam position module in the Opti. Although the factory manual indicates the engine will run fine without it, Gary's testing has shown it can cause problems, including shutting the engine down.
To keep the SES light from coming on, you have to fix the high resolution pulse problem. Whether that will fix the backfiring, I can't say.
Have you checked the Opti harness connector for corrosion or damaged pins?
12-29-2014, 03:34 PM
#21
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Re: code 42
Hard to understand the question with the typo's....
DTC 36 indicates a loss of high resolution pulse signal from the optical cam position module in the Opti. Although the factory manual indicates the engine will run fine without it, Gary's testing has shown it can cause problems, including shutting the engine down.
To keep the SES light from coming on, you have to fix the high resolution pulse problem. Whether that will fix the backfiring, I can't say.
Have you checked the Opti harness connector for corrosion or damaged pins?
DTC 36 indicates a loss of high resolution pulse signal from the optical cam position module in the Opti. Although the factory manual indicates the engine will run fine without it, Gary's testing has shown it can cause problems, including shutting the engine down.
To keep the SES light from coming on, you have to fix the high resolution pulse problem. Whether that will fix the backfiring, I can't say.
Have you checked the Opti harness connector for corrosion or damaged pins?
01-06-2015, 02:11 PM
#22
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Re: code 42
Still have the code 36......already checked the opti wire harness no damaged or corossion. Was able to get another distributor same one ac delco and the code 36 is still there. Wat else to check for a code 36,I noticed the ignition module i replaced doesnt say GM on it, it is from ac delco,my original ignition module says GM on it,which is the original one.
But doesn't code 42 only set when something is wrong with the ignition module,and the ground wires too?
Also what is causing the backfiring when i accelerate too?
But doesn't code 42 only set when something is wrong with the ignition module,and the ground wires too?
Also what is causing the backfiring when i accelerate too?
01-06-2015, 04:26 PM
#23
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Re: code 42
As has already been discussed above, it appears DTC 42 can be set by a sudden loss of the high resolution pulse signal from the Opti, according to Gary's testing.
With regard to DTC 36, I can only go by what the 1994 factory manual states. It is set when "40 low resolution pulses occur before any high resolution pulses are detected."
Have you checked the voltage on the high resolution circuit (purple/white wire to pink/black ground wire)? If you don't have the voltage from the PCM, you won't get any high resolution pulses from a healthy Opti.
With regard to DTC 36, I can only go by what the 1994 factory manual states. It is set when "40 low resolution pulses occur before any high resolution pulses are detected."
Have you checked the voltage on the high resolution circuit (purple/white wire to pink/black ground wire)? If you don't have the voltage from the PCM, you won't get any high resolution pulses from a healthy Opti.
01-06-2015, 05:11 PM
#24
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Re: code 42
As has already been discussed above, it appears DTC 42 can be set by a sudden loss of the high resolution pulse signal from the Opti, according to Gary's testing.
With regard to DTC 36, I can only go by what the 1994 factory manual states. It is set when "40 low resolution pulses occur before any high resolution pulses are detected."
Have you checked the voltage on the high resolution circuit (purple/white wire to pink/black ground wire)? If you don't have the voltage from the PCM, you won't get any high resolution pulses from a healthy Opti.
With regard to DTC 36, I can only go by what the 1994 factory manual states. It is set when "40 low resolution pulses occur before any high resolution pulses are detected."
Have you checked the voltage on the high resolution circuit (purple/white wire to pink/black ground wire)? If you don't have the voltage from the PCM, you won't get any high resolution pulses from a healthy Opti.
01-07-2015, 09:33 PM
#25
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Re: code 42
As has already been discussed above, it appears DTC 42 can be set by a sudden loss of the high resolution pulse signal from the Opti, according to Gary's testing.
With regard to DTC 36, I can only go by what the 1994 factory manual states. It is set when "40 low resolution pulses occur before any high resolution pulses are detected."
Have you checked the voltage on the high resolution circuit (purple/white wire to pink/black ground wire)? If you don't have the voltage from the PCM, you won't get any high resolution pulses from a healthy Opti.
With regard to DTC 36, I can only go by what the 1994 factory manual states. It is set when "40 low resolution pulses occur before any high resolution pulses are detected."
Have you checked the voltage on the high resolution circuit (purple/white wire to pink/black ground wire)? If you don't have the voltage from the PCM, you won't get any high resolution pulses from a healthy Opti.
Fred have you ever heard a tooth missing on an opti????
01-08-2015, 07:25 AM
#27
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Re: code 42
Thank God!!!!!! The car is finally @ home with me, mechanic figured out one of the teeth were bad on the opti causing the dtc 36,no more backfiring and losing power,after i turn the car off and turn it back on, the car fires up right away no cranking excessively. And no ses light,idling is perfect.
Fred have you ever heard a tooth missing on an opti????
Fred have you ever heard a tooth missing on an opti????
I'd strongly suggest that in the future, you try to do these repairs yourself, with our help. I'm convinced that when it comes to the LT1, most "mechanics" couldn't find their a$$ with both hands.
01-08-2015, 09:15 PM
#28
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Re: code 42
hey Rob my bust he told me the opti got misaligned,im hella confused oh well but the car is perfect now,just not gonna have him work on my car in the future
Exactly thats what im definitly gonna do next time
Fred
That makes no sense at all. The backfiring and losing power would have been caused by the splined shaft tooth being misaligned due to sloppy assembly. But a misaligned shaft will not cause DTC 36.
I'd strongly suggest that in the future, you try to do these repairs yourself, with our help. I'm convinced that when it comes to the LT1, most "mechanics" couldn't find their a$$ with both hands.
I'd strongly suggest that in the future, you try to do these repairs yourself, with our help. I'm convinced that when it comes to the LT1, most "mechanics" couldn't find their a$$ with both hands.
Fred
