P650 and P1670 after Intense PCM and 180 stat install - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 03-10-2010, 10:55 PM   #11
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Originally Posted by Danthurs View Post
If it'* working now there might have been a bad connection.
Well, it came back but I am hoping the guys at Intense have a fix for it. I was fairly surprised at how easy it was to change the SWPS and lube the intermediate shaft joint also. Obviously the previous owner had issues with the clunking steering wheel too. I used some HD Calcium grease for the shaft. This is the same stuff I use on pumping unit wristpins in the oil field. Appreciate the help!
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Old 03-10-2010, 11:00 PM   #12
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Do you have a problem that leads you to replace the fuel filter?
No real reason, but the O2 sensor is the original with 91K on it and the fuel filter is about a year old. Just one of those preventative things. My wife will be driving her car from West Texas to Los Angeles in a few weeks to visit relatives. Gotta keep the family safe
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Old 03-11-2010, 08:09 PM   #13
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If you are still interested MIL control is pin # 5 BRN/WHT PCM C2 clear connector
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Old 03-11-2010, 09:36 PM   #14
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I ran by the local Oreilly store and borrowed their scanner tonight. The P1670 code is gone but the P0650 is still there. The indicator bulb is not faulty because it lights up after about 5 minutes of driving. WIll give the guys at Intense a call back tomorrow.
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Old 03-12-2010, 09:30 PM   #15
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I talked to the Intense guys today and here is what I did. I swapped the new PCM for the OEM one and re-ran the codes. The P0420 code came back up but not the P0650 for the MIL circuit. Swapped it back and the codes flip flopped. Most likely a bad PCM, but I will wait for Intense to confirm it. The guys at Intense are top notch.
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Old 03-12-2010, 10:12 PM   #16
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I would tend to agree the PCM has a problem. I would suggest them sending another one and swap them out.
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Old 03-19-2010, 02:53 PM   #17
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Talked to Intense guys on Wednesday and will have a new PCM early next week.
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Old 03-19-2010, 02:57 PM   #18
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Hope that corrects your problem. Keep us posted.
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Old 04-02-2010, 12:29 AM   #19
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I received my Intense PCM a few weeks ago and was finally able to install it. I decided to check the codes one more time before I swapped it out. P0650 and P0420 were both listed. I had ordered the PCM with the P0420 delete due to the exhaust mods. Turns out the PCM really is bad. I swapped in the new one and had the CASE learn performed at the dealership. I can really tell a difference in the characteristics of the new tune. Looking forward to some new parts this summer.

Thanks to Chris and Todd at Intense Racing.
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Old 04-02-2010, 12:31 AM   #20
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I've always found Intense to be very helpful and correcting problems and answering questions.
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electrical, loose connection, p0650, p1670, pcm issue, pin issue, pins, plugs

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