Lgordo99

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35 points
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Question Asked: Location of ICM on Volvo 940
March 09, 2012, 05:38 AM
Where is the ICM (approx 2 inches square)located, not to be confused with the 6 inch square ICU located under the dash.
Question Asked: Why won't car start after sitting a few hours then start OK the next day.
March 02, 2012, 05:34 PM
A few months ago the ICM fixed the problem. This time we replaced the more expensive ICU (black box) and the problem still exists. It will start OK for a while then after sitting for a few hours turns over OK but will not start. The next day it usually starts OK. The mechanics that tried it fix it believe it is not getting fire when it won't start. Maybe the Volvo dealer can detect the problem with Volvo specific testers?
Question Asked: Why won't it start after sitting a few hours then start OK the next day?
March 02, 2012, 05:26 PM
Replaced Ignition Control Unit and the Ignition Control Module and the problem still exists. The ICM fixed it for a few months. Now It will run fine for a day or two then after being parked for a few hours won't start. Quite often it will start the next day and then run fine for a while. Two different mechanics have attempted to fix it but the problem is sporadic. The mechanics think it is not getting fire.
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