electrcal problem with 90 vette
Thread Starter
Heel & Toe
Joined: Nov 2006
Posts: 17
Likes: 0
electrcal problem with 90 vette
I can not read any codes whit a scanner dont have any ses light and my sir light is on cleand the sensors for the sir changet the ecm and the ccm can any body pleas help me whit any sugestions before i go nuts and the interior light do not come on when i open the dorrs but work on the light swihts
Le Mans Master
Joined: Aug 2003
Posts: 9,884
Likes: 3
From: Magnolia Mississippi
St. Jude '03-'04-'05-'06-'07
1 fill out your profile - old timers here are more likely to help U
2 do a search on reading codes, codes, etc - the how to are there
3 Check the tech notes section
4 do some research
2 do a search on reading codes, codes, etc - the how to are there
3 Check the tech notes section
4 do some research
Drifting
Joined: Jan 2003
Posts: 1,894
Likes: 3
From: Reading PA.
Rolf even though you cleaned the bottom of the sensors on the frame they still could be bad. Usually the right side sensor is the culprit. Peel back the carpet in the footwell area of the passenger side and you will see the plug to the frame sensor(might be tough to see) it's a dull yellow color. BEFORE YOU UNPLUG IT DISSCONNECT YOUR BATTERY! When you unplug it look at the plug comming in from the sensor. You will notice a small notch in the connector face this toward the bottom when you do this test. Looking at it now there should be a single pin at the top (pin#1) and #2 bottom left pin#3 bottom right. Get an Ohm meter and test pin's #1 and 2 they should OHM about 10,000 same with 1 and 3 but 2 and 3 should be less than 1 If any of these are out of spec the sensor is bad about 60 bucks at GM dealer. Then you will have to clear the code after the repair. Good luck with the repair maybe I can help more. Let me know how ya make out Pipe
Thread Starter
Heel & Toe
Joined: Nov 2006
Posts: 17
Likes: 0
thanks for helping me i finaly figured out my problem
my dad left the car at the chevy dealer to fix the radio two years ago, they kept the car for two months and when he got it back they had put a new radio in and a battery switch because the battery was draining down in two days. they told him it was the a/c and it was a big job to fix. I moved back to sweden a year a go, i started with putting back the original radio and speakers..... to make a long story short, i purchashed a scanning tool, ecm ,ccm,a/c cotroller,a/c programmer and it still did not work no codes and no ses light then i found this forum and started to ask for help.... i downloaded the hole electrical manual 90 vettes from 'rokka', a member from finland, and started to follow cables ... when i came to the ses light and under the passenger side glovecompartment some idiot hade reversed two connections -- now the car works great .... it has only taken me 6 months but would have been much longer without help from the forum. Thanks.
Last edited by Rolf Persson; Feb 17, 2007 at 04:05 AM.
