o2 Problem
Thread Starter
Instructor
Joined: May 2017
Posts: 112
Likes: 10
From: Miami Florida
Depends, the misfire I was having wouldn’t change regardless of what I changed which lead me to believe it was an engine problem, engine codes and sensor readings are a completely different situation. I’d need a little more specific’s to help ya out
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Joined: Nov 2021
Posts: 83
Likes: 2
it all started like this while I was running in the street the SES light comes on and the radiator fans together I immediately go back home the engine stops but I manage to get to my garage I notice that when I tap my hand on the ECM the engine stops, I have it rebuilt when I put it back on the car I start the engine and the engine rpm are high in parking 1500, I try to run on the road and the SES light comes on, in parking the engine always runs at 1500 rpm, I read the codes h64 and h62 my thoughts is that now the Ecm is ok it sees the engine errors then I replace both the o2 and iac sensors but the situation does not change with the engine hot in park always 1500rpm and engine light i no long see the code h62 but only h64 module 4I clean all the ground masses but I don't have a scanner what can I do?
Last edited by Jo bar; Nov 12, 2023 at 01:12 AM.
Melting Slicks
Joined: Feb 2003
Posts: 2,677
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From: Saskatoon Sask.
Thread Starter
Instructor
Joined: May 2017
Posts: 112
Likes: 10
From: Miami Florida
it all started like this while I was running in the street the SES light comes on and the radiator fans together I immediately go back home the engine stops but I manage to get to my garage I notice that when I tap my hand on the ECM the engine stops, I have it rebuilt when I put it back on the car I start the engine and the engine rpm are high in parking 1500, I try to run on the road and the SES light comes on, in parking the engine always runs at 1500 rpm, I read the codes h64 and h62 my thoughts is that now the Ecm is ok it sees the engine errors then I replace both the o2 and iac sensors but the situation does not change with the engine hot in park always 1500rpm and engine light i no long see the code h62 but only h64 module 4I clean all the ground masses but I don't have a scanner what can I do?
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Thread Starter
Instructor
Joined: May 2017
Posts: 112
Likes: 10
From: Miami Florida
[QUOTE=Jo bar;1607232052]the ECM has already been repaired, but the problem of the high idle and the SES light is back, and I extract the h64 code[/QUOTE
all I could recommend is a hard reset with the battery disconnect. A bad O2 sensor in my case, didn’t cause a high idle and check engine light so there’s most likely something else going on. And the tapping on the ECM definitely should not happen. Make sure it’s fully seated and plugged in properly. Check the pins and plug. After that, I would check the resistance between the O2 sensor and the pin on the main harness. The H64 code is a common one from what I remember. I’m sure there’s someone with a similar situation that has found a solution. I check out more recent threads with a more similar issue for a solution, best of luck
all I could recommend is a hard reset with the battery disconnect. A bad O2 sensor in my case, didn’t cause a high idle and check engine light so there’s most likely something else going on. And the tapping on the ECM definitely should not happen. Make sure it’s fully seated and plugged in properly. Check the pins and plug. After that, I would check the resistance between the O2 sensor and the pin on the main harness. The H64 code is a common one from what I remember. I’m sure there’s someone with a similar situation that has found a solution. I check out more recent threads with a more similar issue for a solution, best of luck