Code 71 - Tried Almost Everything (replaced everything)
#1
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Code 71 - Tried Almost Everything (replaced everything)
Hello:
I have a 1994 GS 300 with the dreaded Code 71.
I have seemingly tried everything.
I have replaced with new, the following:
1. VSV for EGR
2. EGR Modulator
3. EGR Valve
4. EGR Temp Sensor
5. All Vacuum Lines in EGR system
I am still getting the code 71 which is preventing me from getting the car smogged.
Does anyone have any idea as to what I should check next? I am stumped.
Thanks in advance.
I have a 1994 GS 300 with the dreaded Code 71.
I have seemingly tried everything.
I have replaced with new, the following:
1. VSV for EGR
2. EGR Modulator
3. EGR Valve
4. EGR Temp Sensor
5. All Vacuum Lines in EGR system
I am still getting the code 71 which is preventing me from getting the car smogged.
Does anyone have any idea as to what I should check next? I am stumped.
Thanks in advance.
#3
Have you checked the passage way for the egr system? They get clogged with carbon and won't allow anything to pass through. Its on the back of the head if I remember right. Mine is JDM so no egr thank god. I hate that entire setup.
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When I had the EGR valve out, I sprayed throttle body cleaner into the intake plenum but I have not removed the intake plenum to clean it meticulously yet. There did not seem to be a lot of carbon at the point where the EGR valve connects to the intake plenum, so I was hoping that was not the issue. Seems like a big job and I was hoping to exhaust all other solutions before going that route.
#6
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It was time consuming getting the intake plenum off.
The passage was completely plugged. I let Seafoam soak, cleaned with pipe cleaners, then blasted the EGR passage with my air compressor.
Thanks for the help.
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