93 Century 3.3 Won't Start

Thread starter #1
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Buick Ownership
1993 Buick Century
Ok guys, the car ran but couldn't start the next day. Had a shop diagnose it as not getting spark due to a bad ignition control module. Took it home, replaced module and still won't start. Also already has new coils, wires and plugs.

What do you guys think, maybe Crank position sensor? Not sure what to do now, and this is my daily driver.
 

MelsRegal

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how did you get it to a shop in order to diagnose a bad icm and how did you get it home if it didnt start?
why didnt you let them fix it once it was in a shop?
did you check for spark at the plugs to make sure it is an ignition issue ?
did you check for computer codes?
 
Thread starter #3
16
0
1
Buick Ownership
1993 Buick Century
Yes, needs a crank position sensor. I would replace the harmonic balancer/reluctor wheel while its off as well. I just went through the exact thing with my 1993 3.3. I drove home from work just fine, the next morning it wouldn't start. The shop said it was the ICM which I replaced, still nothing. Replaced the Crank sensor and harmonic balancer/reluctor wheel and it runs again.

Good lick, let us know what happens!
 
Thread starter #4
16
0
1
Buick Ownership
1993 Buick Century
how did you get it to a shop in order to diagnose a bad icm and how did you get it home if it didnt start?
why didnt you let them fix it once it was in a shop?
did you check for spark at the plugs to make sure it is an ignition issue ?
did you check for computer codes?
Probably did what I did-used my insurance roadside assistance to the it to a shop. The shop quoted me $400 to replace the ICM. I replaced it myself for $100. Still didn't start, had it towed to another shop and they replaced the crank sensor and balancer/reluctor wheel.
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Assuming it's running now. As far as shop 1 repair diagnosis more than likely it was a code guess, it's not clear if they did anymore to trouble shoot it and may consider not using them again, but only you know all the details.
 
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