help needed about a Cadillac seville 1977

35

Asked by May 03, 2015 at 02:20 PM about the 1977 Cadillac Seville

Question type: Maintenance & Repair

Hi everyone
I'm a brand new user of your forum and hope you'll be abble to help me

i own a 1977 Cadillac Seville oldsmobil engine 5.7  350 ci  first injection
While driving I've set it on cruise control then the engine stopped

I've alredy checked a few things :
the gazoline in coming to the engine
spark at the spark plug
I've changed the gazoline filter and put a new battery

I've noticed that there is no electricity at the fuel injector

It's been a while I'm mashing up my brain and fingernails !!
Any clue guys ??

8 Answers

109,905

Check for a blown injection fuse, it will be marked INJ, you could have 2. if those check good then check if you get an injector pulse signal from the ECM, if you don't then the next step is to have the system checked and these old Caddies had their own way of accessing the system. Here is a page you can look at but it usually sends you to using the old Cadillac analyzer:http://www.cadillacseville.org/technical.html

2 of 2 people found this helpful.
35

Thanks a lot for this complete answer I'll check those Excuse the poor english from a french girl but what does ECM mean ? I'll study the very useful link you put ! Thanks again !

72,045

ECM,is the car computer.

109,905

Yep

35

thanks ! now I'll try to locate it ! aoutch !

1 of 1 people found this helpful.
35

Right i finally found it behind the radio and took it down now what to do with it ? How can i check if it's working or not ? Or shall I replace it anyway

20

Replace it they are good for 90 to 100000 miles.

20

Yes most likely the ECM is the issue it supplies the power to the injectors

Your Answer

Seville

Looking for a Used Seville in your area?

CarGurus has 289 nationwide Seville listings starting at $800.

ZIP:

Cadillac Seville Experts

  • #1
    Tom Demyan
    Reputation
    410
  • #2
    Js08016
    Reputation
    350
  • #3
    carpetguy53
    Reputation
    340
View All

Related Models For Sale

Used Cadillac DeVille
1,414 listings starting at $1,899
Used Cadillac Eldorado
316 listings starting at $1,700
Used Chevrolet Impala
506 Great Deals out of 32,201 listings starting at $1,000
Used Dodge Charger
326 Great Deals out of 36,248 listings starting at $1,999
Used Ford Mustang
344 Great Deals out of 41,952 listings starting at $1,488

Used Cars For Sale

2001 Cadillac Seville For Sale
25 listings starting at $800

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.