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New here, need urgent help with ECU (PCM) and alternator

 
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Old 23 Jun 2009, 11:21 pm
Fresh Cruiser
 
Join Date: Jun 2009
Posts: 1
Unhappy New here, need urgent help with ECU (PCM) and alternator

Hello to everyone, I registered on this forum to try and get some help so I can hopefully get my brother's cruiser running.

2001 PT Cruiser, 2.4, Auto with 60,000 miles.

Heres the rundown:

Some 2 months ago my brother tells me his car isnt starting. Checked and the battery seemed dead and wouldn't take a jump. Bought a new battery and the car ran. A couple hours later he calls me and tells me that his car is acting weird, lights and radio are dimming, as if the battery was dying. He pulls over and battery dies completely, so I drive to where he was and try to give him a jump. The car starts fine, but when the cables are removed it dies after a few minutes. So we towed it to our mechanic to replace the generator. He calls me the next day and tells me its installed, but that for some darned reason Chryslers have the Electronic Voltage Regulator inside the ECU and that it fried when the generator died. So the car will start but wont hold a charge, and the ABS, traction, and battery lights are on.

He tells me the ECU (or PCM, as the fsm calls it) costs $500 new so we have no choice but to tow the car home, where it sits for 1 month until we have the money to purchase a remanufactured and pre programmed PCM.
Now, this PCM is programmed with the car's VIN and mileage. However, I installed it tonight and had no luck. The car wont hold a charge and the abs, traction, and battery lights are still on!

Cliff Notes:
-Installed new generator, supposedly old one died and fried PCM
-Installed remanufactured PCM programmed with car's VIN and mileage. Will run when given a jump start but will die if cables are removed. Also, traction,ABS, and battery lights are on.

Is there anything I am missing? Why isn't the car working? The generator was replaced with a new unit, not reman (wasnt cheap I can tell you) and supposedly the only thing missing was the PCM......do you think my mechanic lied or maybe missed something? The car was running fine before this problem started.

I know its a long first post but I am running out of ideas and my younger brother has been without a car for over a month...any help will be appreciated. Thanks!

ps: mods if I posted this in the wrong section feel free to move

Last edited by RunningWild; 23 Jun 2009 at 11:48 pm.
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Old 24 Jun 2009, 05:28 am
quicksilverdon's Avatar
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Join Date: Nov 2003
Location: Felton, Delaware
Posts: 20,501
Default Re: New here, need urgent help with ECU (PCM) and alternator

Welcome.
Problem points to the PCM you bought.
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Old 24 Jun 2009, 10:45 am
Knotsobright1's Avatar
Regular Cruiser
 
Join Date: Jun 2009
Location: Indiana
Posts: 134
Default Re: New here, need urgent help with ECU (PCM) and alternator

Check the ground for the battery. Sounds to me like it has a bad ground and when you attach your jumper cables you become the ground. Your car actually not really you.
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