Just like to say hi to everyone I am new to cadillac's and this looks like a great forum! I have a 94 STS with 158000 milesI got in july for $2000 it looks great black with 97 STS chrome wheels.
Anywaythe carstarted runningbad on friday so i pulled the codes and I got P119 (open or shorted fuel injector)
I did a little research online. pulled the injectors ohm tested them (all ok) and checkedall the injector harnesses for power (the all have power)the only other thing i can find searching the internet is a bad PCM.
thanks for the help

 

P119 open or shorted fuel injector. 93-95 Northstar injector harness has some issues with the insulation delaminating off the wires. New harness is pretty pricey. You may be able to tape them up. Issue is is between intake manifold and connector near transmission. Get factory manual. Not sure you need ECM

 

Thanks for the tip. I willcheck out the wires after work monday and let you knowwhatI find.

 

I got into my caddy today and drove it to work it run just fine. So i was thinking it has to be a bad wire. I pulled it inside after work looked at all the wires from the intake to the plug above the trans and as far back to the ECM as I can and all the wires look good.
anyother ideas?

 

Ecm is likely choice. If you have factory books there are some tests you can do when the P119 is current to be sure.

 

I see a set of books on e-bayI will try to get them.If it is the ECMdo you thinka used one will be ok... I am sure a new one is a lot of $ . thanks for the help

 

One more thing will 93 eldo /seville books work for my 94 sts? thanks again for all the help

 

You would better off with the correct year manuals, but 93 books a better than none.You could contact ebay seller they may correct books. There are normally changes between years. There are most likely few between 93 and 94 since many changes were made for the 93 Northstar STS. Used ECMs are always iffy, make sure there is no corrosion or water damage. Make sure numbers match, and transfer your prom to it. You will need to learn tps and idle after you change it.

 

slowroll sorry for all the posts but thanks alot for the help again...... on e-bay the 94 books are for deville eldo and seville. If I recallmost 94 deville's havethe 4.9only afew have the northstar... so the books cover both 4.9 and northstar?
thanks again

 

update- i got the diagnostic info for my p119 code. idid all the steps and it look like the pcm is bad.... i have never worked on a caddy it was nice that you can do diagnostic without any tools (just a volt meter)...anyway it looks like i am looking for a pcm