Ask Experts Questions for FREE Help !
Ask
    ssackett's Avatar
    ssackett Posts: 3, Reputation: 1
    New Member
    		  
    #1

    Sep 2, 2009, 10:12 AM
    1991 Civic Si. Bad ICM. Again?
    I have a 1991 Civic Si. It was running fine for m onths, then in the last days of its life it stalled a couple times while driving it and wouldn't start sparatically. Well One day I started it up and moved it into my driveway and then it would not start after that. I noticed some dry cracks on my main relay and resolder them.. That didn't work.. I then remembered before it died the check engine light would come once after driving it for awhile sometimes. I checked the code and it was code 15. So I figured it must be the ICM.. I changed it and on my first try it started up with out a hiccup. I let it run for a little and shut it off and went back into the house.. Well the next day I tried to start it and it is NOT starting again. Could the ICM be burt out again? What other issue can it be? I am getting frustrated. Thanks for any help!
    TxGreaseMonkey's Avatar
    TxGreaseMonkey Posts: 16,761, Reputation: 5597
    Uber Member
    		  
    #2

    Sep 2, 2009, 11:38 AM

    Make sure you applied silicone heat-transfer compound to the back of the new ICM. I'd recommend that you replace the coil, also. Here's how to properly do the work:

    https://www.askmehelpdesk.com/cars-t...tml#post265896
    ssackett's Avatar
    ssackett Posts: 3, Reputation: 1
    New Member
    		  
    #3

    Sep 2, 2009, 12:51 PM

    Ya ill try the coil as well. I just think its very very odd it started up right after I changed my ICM and now its dead in the water again..
    TxGreaseMonkey's Avatar
    TxGreaseMonkey Posts: 16,761, Reputation: 5597
    Uber Member
    		  
    #4

    Sep 2, 2009, 12:53 PM

    Run the tests in Sections 1 and 2 of the Sticky.
    ssackett's Avatar
    ssackett Posts: 3, Reputation: 1
    New Member
    		  
    #5

    Sep 2, 2009, 01:00 PM

    Ya I printed the test out and will try them tonight. Thanks again for your response. I was so happy the other night when I fixed it and now its back to where I started. Its been a learning experience which will help me in the long run though.
    TxGreaseMonkey's Avatar
    TxGreaseMonkey Posts: 16,761, Reputation: 5597
    Uber Member
    		  
    #6

    Sep 2, 2009, 01:03 PM

    Yes. Then you'll be in a better position to help others, too.
    TxGreaseMonkey's Avatar
    TxGreaseMonkey Posts: 16,761, Reputation: 5597
    Uber Member
    		  
    #7

    Sep 2, 2009, 01:07 PM

    Code 15 is definitely ICM-related. Be sure to reset the ECM by removing the 7.5A Backup Fuse, in the under hood fuse box, for 10 seconds.
Not your question? Ask your question View similar questions
 

Question Tools Search this Question
Search this Question:

Advanced Search

Add your answer here.


Check out some similar questions!

1991 Honda Civic [ 6 Answers ]

Dear Ask Me Crew:( I was driving down the highway at about 65 mph. and the car just lost acceleration. I had the car towed home. No more than a year ago I had a new timing belt put in. I checked the head with the valve cover off and all the valves were straight on the 1500CC engine. I...

1991 honda civic dx [ 10 Answers ]

I have a 1991 honda civic dx if I turn on my head lights or heater hit the horn turn on the cd deck anything at all and try to crank it it won't crank nothing at all... and if you don't have anything on it will start and run until you turn anything on or hit the brakes then it dies. And if you turn...

1991 Civic DX [ 1 Answers ]

After following txgreasemonkey FAQ and recommendation, I replaced my wires, plugs,rotor, cap and igniter. Car ran fantastic for a week on Shell 93 and a bottle of Gumout Fuel injector cleaner. I stopped and put in BP 87 the following week and the car has run terrible, very low rough idle but...

1991 Civic Hb DX [ 3 Answers ]

New to the forum, but I'm running into a problem I curently have a 91 civic HB Dx, first of all I've been having a problem turning the car on in the mornings or when it has been runnig for a while, and trn off the car it will take a couple cranks in order to turn on, also when I take long trips my...

1991 honda civic dx [ 1 Answers ]

OK, just bought a honda civic dx, excellent shape and condition. I've noticed it shifts a little lazy... does that have anything to do with the shift lock release on the shifter? What exactly is the shift lock release?

View more questions Search