e40d overdrive question
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Elder User
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we pulled the codes again and it seems that nothing poped out as still there. One code we did get seems it might be due to having to extend my oxygen sensor wiring after having my new Y pipe installed
Fleet Owner
Joined: Oct 2005
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From: Kentucky
Define "we pulled the codes again and it seems that nothing poped out as still there". At the very least you should get the "All Clear" code of 11/11 after the KOEO tests and once again for Continuous Memory.
Your second statement contradicts your first, you did get a code somewhere along the line. What was (were) the code(s) you say is related to your oxygen sensor wiring that you extended.
We are trying to help you here, please do not take my response as arrogant. In order to be most effective we need you to give us as many details as possible. What may seem insignificant to you may be the clue that reveals what is wrong with your vehicle.
Your second statement contradicts your first, you did get a code somewhere along the line. What was (were) the code(s) you say is related to your oxygen sensor wiring that you extended.
We are trying to help you here, please do not take my response as arrogant. In order to be most effective we need you to give us as many details as possible. What may seem insignificant to you may be the clue that reveals what is wrong with your vehicle.
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Ok if im reading these right Im getting a few codes but Acording to my reader they are past codes not currently there but thats ok because the check engine light flickers on and off her and there. The first codes I got for the KOER are 538, 536, 632. According to my book they seem to be all the things you guys said, it wants me to react to the test but I didnt. Anyway the codes Im getting when I test KOEO are 111,111, 13,32,45,23,32,452. At least I think thats what im getting. My book says the 111 is system pass.
The 13 is rpm out of range but that should only be when running so im not sure why its coming up here.
32-EGR feedback presure fault (1985-89 models) Not sure that applys to my 92
45-thermactor air upstream or DIS coil pack circuit failure.
23-throttle pposition sensor signal out of range
452- vehicale speed sensor fault
Only a few of these seem to apply to my truck from looking at it but I could be wrong.
The 13 is rpm out of range but that should only be when running so im not sure why its coming up here.
32-EGR feedback presure fault (1985-89 models) Not sure that applys to my 92
45-thermactor air upstream or DIS coil pack circuit failure.
23-throttle pposition sensor signal out of range
452- vehicale speed sensor fault
Only a few of these seem to apply to my truck from looking at it but I could be wrong.
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Elder User
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Well I thought maybe it was starting to read the codes over again and repeat but it didnt seem to keep going and the only thing that seemed to make sense was that the last code was 452. And if you try to put them all in 3 digit code then i have extra numbers and if you did 2 digits im missing some lol. Is there a better code reader that wont break me to buy? Trying to count the blinks and beeps and write it all down and watch the light is a pain to do
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Brett Foote
Fleet Owner
Joined: Oct 2005
Posts: 20,789
Likes: 1,753
From: Kentucky
Ok if im reading these right Im getting a few codes but Acording to my reader they are past codes not currently there but thats ok because the check engine light flickers on and off her and there. The first codes I got for the KOER are 538, 536, 632. According to my book they seem to be all the things you guys said, it wants me to react to the test but I didnt. Anyway the codes Im getting when I test KOEO are 111,111, 13,32,45,23,32,452. At least I think thats what im getting. My book says the 111 is system pass.
The 13 is rpm out of range but that should only be when running so im not sure why its coming up here.
32-EGR feedback presure fault (1985-89 models) Not sure that applys to my 92
45-thermactor air upstream or DIS coil pack circuit failure.
23-throttle pposition sensor signal out of range
452- vehicale speed sensor fault
Only a few of these seem to apply to my truck from looking at it but I could be wrong.
The 13 is rpm out of range but that should only be when running so im not sure why its coming up here.
32-EGR feedback presure fault (1985-89 models) Not sure that applys to my 92
45-thermactor air upstream or DIS coil pack circuit failure.
23-throttle pposition sensor signal out of range
452- vehicale speed sensor fault
Only a few of these seem to apply to my truck from looking at it but I could be wrong.
Code 332: EGR valve opening not detected.
Code 452: Computer detected an error in the VSS or PSOM signal during the last 80 warm-up cycles.
Code 452 is pointing to your shifting problem.
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ok sounds better then what i was getting lol. Does the egr valve not opening mean it needs to be replaced? And does the vss or psom a big thing? I know i hear alot about the vss and seem to be a bad thing.
Fleet Owner
Joined: Oct 2005
Posts: 20,789
Likes: 1,753
From: Kentucky
Plenty of good info located here: Fuel Injection Technical Library
And more sensor info here: Steve83 Sensor Values
The VSS circuit can be tricky to troubleshoot. Historically replacing a VSS does not fix these types of issues in most cases I have seen on this forum. Sometimes the issue gets worse. Since your issue is intermittent it is going to take some good detective work to resolve.
Start with checking and cleaning the connections to/from the VSS sensor. I would not blindly replace the VSS at this point. It would be wise to remove the one you have to inspect and clean it off.
The PSOM is located on the back of the gauge cluster. I have seen several cases of bad (dry/leaking) capacitors on the board. If checking/cleaning the VSS/connections does not resolve the issue I would start looking at the PSOM.
There is some more circuitry between the VSS and the PSOM, RABS module, but a faulty RABS module usually kills the VSS signal completely. There is a test for VSS output, check this out: VSS Values
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