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01-09-2022, 09:36 PM
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#1 |
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Junior Member
Join Date: Jan 2022
Posts: 2
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1989 LS Coupe 5 Speed: CEL 12 problems
Hello, I'm new to this website and glad to have found it. I have a 1989 Legend Coupe with the 5 speed manual and really love it. Since I have had it, however, the CEL 12, EGR, has consistently come on. I replaced my EGR valve with a like new verified functional one and now the light comes on sooner into a drive and is accompanied by some starting issues; often I have to crank it multiple times and give it gas. The idle is also a bit off, but the only CEL is still the egr. I have followed a couple of the simpler tests that the shop manual gives, but was wondering if anyone has any insight into what it could be. I don't believe that the egr pipes or threshold are clogged as I visually checked them and there was no visible buildup. I appreciate any advice.
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01-13-2022, 02:33 PM
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#2 |
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Marcel's cousin
Join Date: Jun 2009
Location: Trinity, AL
Posts: 831
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The EGR shouldn't effect starting or idling, unless maybe it's stuck open. It shouldn't activate until the engine is warmed up, and at a steady cruise.
A faulty coolant temperature sensor (TW Sensor) can cause starting and idling problems. http://forums.acuralegend.org/showthread.php?t=27968 http://forums.acuralegend.org/showthread.php?t=34454 -Kennon |
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01-14-2022, 07:32 PM
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#3 |
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Junior Member
Join Date: Jan 2022
Posts: 2
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Thanks for the response! I actually found and solved the starting/idling problem, had an electrical connector disconnected somehow. The problem I currently have is the CEL comes on within 5 minutes of driving.
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01-15-2022, 11:30 AM
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#4 |
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Marcel's cousin
Join Date: Jun 2009
Location: Trinity, AL
Posts: 831
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You can download the service manual from the G1 DIY sticky.
It has a troubleshooting procedure for the EGR. -Kennon |
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01-15-2022, 04:00 PM
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#5 |
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Senior Member
Join Date: Aug 2009
Location: CA
Posts: 807
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Hopefully, these will help.
[IMG]  [/IMG][IMG]  [/IMG][IMG]  [/IMG][IMG]  [/IMG]
__________________
'87 L-Coupe 5-Speed Stock; Few Mods 445K Miles - original engine and drivetrain. Last edited by paulo57509; 01-15-2022 at 04:04 PM. |
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