I just installed a coolant temp senor on my 89 iroc and now when i tried to start my car it just turns over and the ses light does not come on and i dont hear the fuel pump prime at all. Does anyone have any ideas I am going to try and check some relays. All of my fuses under the fuse panel is good.

 

Is there some kinda fuse for the pcm because this probably all started when I was filling my radiator back up i spilled a little water near the battery.

 

There is a separate fuse for the ECM and fuel pump located right near the battery:

 

Thanks Vader. How do i check that fuse?

 

I removed the fuse I think this is the problem looks all burnt up I will buy a new one tommorrow here are the pics.

 

Here is the outside, the last pic It is up side down

 

Here is another pic

 

And another

 

Regular or Extra Crispy

 

I think mine went with extra crispy

 

haha, ya man gotta love these old thirdgens. I remember when I had my old wiring setup (I now have a Painless) that I would burn up fuses everytime I floored the car, ahh yes what a lovely period that was carrying a box of fuses with me when I went racing.

 

lmao.

 

thats the fan relay not the ecm fuse

 

No, I believe that is the fuel pump relay. I cannot make out the number that well but, if the fuel pump isnt priming when the ignition is on that would make sense that its the fuel pump relay. Good way to find out is turn to ON and see if fan comes on, in my car the fan always comes on when I turn the ignition to ON.

 

Here is the new one

 

Well come to find out that didn't solve the starting problem. How can you check if you fried your computer.

 

Found the problem it was the fuse between the radiator and the battery here is the pic just in case any one else has this problem. Now the iroc is back on the road.

 

Hmm too bad you found that out after you bought the new relay. But bottom line is with these cars your fortunate to get away just replacing a fuse. When it comes to money pits and bad luck Im the guy to talk to.