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Best PCM

 
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Old 22 Jul 2015, 11:03 pm
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Default Best PCM

Hello!

I'm looking to replace my PCM, anyone know the best source?

Basically I've been having strange electrical issues on and off for some time now. And now my PT wont start even with a newish battery. I jumped it to get it to O'rileys and the voltage regulator failed the test so the battery isn't charging right. The voltage regulator is of course in the PCM...

Any advice is welcome! Also, if you're struggling with similar problems, please post!

2003 PT Cruiser, non-turbo. 189k miles.
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Old 22 Jul 2015, 11:19 pm
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Default Re: Best PCM

Your discription of your problem is not logical. If you re-read it you will see your own information is conflicting.

You must.....first start with a battery that has been load tested at full charge.

Then check fir any DTC , engine codes through the OBDII connector with a scan tool. NOT the key dance as this will not give you good information if you have a failing PCM.

I am curious about the charging test exact,y what were the results?


There are a few good ebay PCMs avilible for under 250 from good vendors. Look for high sales and 90+ positive feed backs and you will do fine.
That is if in fact your PCM is failing which has not been ruled one way or another yet.
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Old 23 Jul 2015, 08:38 am
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Default Re: Best PCM

Agree with Nitro! Do as he suggested to find out exactly what you have going on with your car.

In my opinion, I too believe ebay is likely a better choice of a PCM, if in fact you do need one. The computer 'repair' outfits, more often then not, will send you multiple defective computers before you receive a working example. You might be down for weeks waiting for the mailman day in and day out. You'd likely have a much higher success rate the first time around with a fresh take off from a running car which got listed on ebay.
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Old 23 Jul 2015, 09:11 am
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Default Re: Best PCM

Thanks Nitro and Myckee!

You're right Nitro, a battery load test at full charge is very necessary. However, the voltage regulator failed which prevented the battery test on their machine from proceeding. At this point, I'm pretty sure I'll need a new battery so I'm going to pull it and take it in to be independently tested.
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Old 23 Jul 2015, 01:19 pm
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Default Re: Best PCM

Replaced the battery this morning with a brand new interstate and now it starts and runs fine as expected. I took it in to Autozone for another test and the voltage regulator failed again. Should I be concerned about that? Thanks!
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Old 23 Jul 2015, 03:33 pm
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Default Re: Best PCM

Yes I would be concerned how they are testing the charging system. lol

If you ae getting 13.5+ volts it is charging. It should range from 13.5 -14.50v.
The amps must also be checked as well.

If you are not getting the charge lamp indicator,less then 13.50v or any DTC indicating a PCM issue or other related charging DTC (engine trouble code) then you may have a sensor problem or cable connectability concern.
With all this battery in and out you may have damaged the temperature sensor?
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