GM Longroof Forum
Would you like to react to this message? Create an account in a few clicks or log in to continue.



 
HomeHome  PortalPortal  GalleryGallery  Latest imagesLatest images  SearchSearch  RegisterRegister  Log in  

 

 Service engine soon light

Go down 
2 posters
AuthorMessage
teddyboy1959




Posts : 3
Join date : 2015-03-22
Age : 65
Location : Strangnas SWEDEN

Service engine soon light Empty
PostSubject: Service engine soon light   Service engine soon light Icon_minitimeMon Mar 23, 2015 1:36 pm

Caprice estate 1990 olds 403/700. My service engine soon light has a life of its own! as soon as i turn the ignition on the light comes on like it is supposed to, but it is still on when the engine is running, and it is still on even if i disconnect the ecm with the engine stopped, I tried to do the paperclip trick to get the codes but the light is not flashing, its just on.

Does anybody know witch of the wires at the ecm that goes to the ses light , i need to cut it and connect a testlight to see if the problem is in the light/cluster.


ThankĀ“s Sigge!
Back to top Go down
jayoldschool

jayoldschool


Posts : 2728
Join date : 2009-06-14

Service engine soon light Empty
PostSubject: Re: Service engine soon light   Service engine soon light Icon_minitimeTue Mar 24, 2015 11:27 am

Did you put the 403 in it? I would suspect that the conversion may have deleted the function of the CEL.
Back to top Go down
teddyboy1959




Posts : 3
Join date : 2015-03-22
Age : 65
Location : Strangnas SWEDEN

Service engine soon light Empty
PostSubject: Re: Service engine soon light   Service engine soon light Icon_minitimeTue Mar 24, 2015 12:27 pm

It has all the emission parts from the 307 and the previous owner drove it for a couple of years without any problems with the f-----g service engin soon light Sad

The 403 and the 307 are the same enginefamily. this 403 has a 0,30 overbore, forged pistons shaved heads, a hotter cam, headders, and a modified rochester carb but it still cleared the emission test every year.

Sigge!
Back to top Go down
Sponsored content





Service engine soon light Empty
PostSubject: Re: Service engine soon light   Service engine soon light Icon_minitime

Back to top Go down
 
Service engine soon light
Back to top 
Page 1 of 1
 Similar topics
-
» Service engine soon light
»  Intermittent Service Engine Light LT1
» engine compartment light?
» F-ING CHECK ENGINE LIGHT BACK ON!!!
» Check Engine Light

Permissions in this forum:You cannot reply to topics in this forum
GM Longroof Forum :: Longroof Tech :: Electrical-
Jump to: