help w/ SES light
Thread Starter
Joined: Dec 2005
Posts: 1,392
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From: Central California
help w/ SES light thought this would get more responses from the FI section
https://ls1tech.com/forums/fueling-injection/664849-help-ses-says-p1133-p1153.html
https://ls1tech.com/forums/fueling-injection/664849-help-ses-says-p1133-p1153.html
Joined: Jun 2004
Posts: 1,501
Likes: 7
From: Ft. Irwin, California (But Virginia is home)
Originally Posted by RooRnZ28
thought this would get more responses from the FI section
https://ls1tech.com/forums/showthread.php?t=664849
https://ls1tech.com/forums/showthread.php?t=664849
Also check the wiring from the O2's. Possible the wiring harness is contacting something hot that it shouldn't be.
Others might have different routes to check, but I'd personally start with the above. Good luck
Thread Starter
Joined: Dec 2005
Posts: 1,392
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From: Central California
Originally Posted by Schantin
Do you have a Wideband AF gauge? Or even a Predator programmer. If the AF is looking good, you can use a scanner like a predator (assuming you don't have HP Tuners or the like) and you can visualize the O2 sensors. If they're not putting out a good oscillating pattern at part throttle, they are probably going bad. Not uncommon for them to fail with FI.
Also check the wiring from the O2's. Possible the wiring harness is contacting something hot that it shouldn't be.
Others might have different routes to check, but I'd personally start with the above. Good luck
Also check the wiring from the O2's. Possible the wiring harness is contacting something hot that it shouldn't be.
Others might have different routes to check, but I'd personally start with the above. Good luck
yes i do have a predator, thats how i was able to read the codes, so i guess thats a good start! i didnt know it can monitor the a/f ratio while the car is running?!? i was thinking the wires could have come in contact with my LT's, but i havent been able to check yet... also i do have an AEM wideband, but it just went out a few days ago... like it doesnt read anymore but the guage works... could these be related? thanks for the help schantin!!
Joined: Jun 2004
Posts: 1,501
Likes: 7
From: Ft. Irwin, California (But Virginia is home)
Originally Posted by RooRnZ28
yes i do have a predator, thats how i was able to read the codes, so i guess thats a good start! i didnt know it can monitor the a/f ratio while the car is running?!? i was thinking the wires could have come in contact with my LT's, but i havent been able to check yet... also i do have an AEM wideband, but it just went out a few days ago... like it doesnt read anymore but the guage works... could these be related? thanks for the help schantin!!
Check the wiring harnesses from the front O2's and be sure they're not being melted by your LT's.
BTW, if your car was running too rich at one time (thought I saw you posted that it ran like crap before tuning on another post), then it's possible the O2's were fouled....to include your 5-wire wideband O2.
Hope this helps
Thread Starter
Joined: Dec 2005
Posts: 1,392
Likes: 0
From: Central California
Originally Posted by Schantin
The predator WILL NOT monitor your AF ratio. It WILL monitor other parameters, to include your O2's. The AEM would have given you your AF readings. Too bad that's not working.
Check the wiring harnesses from the front O2's and be sure they're not being melted by your LT's.
BTW, if your car was running too rich at one time (thought I saw you posted that it ran like crap before tuning on another post), then it's possible the O2's were fouled....to include your 5-wire wideband O2.
Hope this helps
Check the wiring harnesses from the front O2's and be sure they're not being melted by your LT's.
BTW, if your car was running too rich at one time (thought I saw you posted that it ran like crap before tuning on another post), then it's possible the O2's were fouled....to include your 5-wire wideband O2.
Hope this helps
