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Old 01-20-2012, 02:32 PM
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liar, liar...part 2

What did I say about never saying never? Just when I thought it was safe to brag about not having any problems, my truck has made me a liar again.

On the way home from work today, just after having come from a car wash, my truck went into limp mode twice. At least I guess that's what it was. I had no power and the truck would barely move. It also threw P0652 (Sensor Reference Voltage B Circuit Low) both times. The only way I could get it out of limp mode was to erase the code. Could the fact I had just run it through a car wash that has undercarriage spray have anything to do with it? There were no CEL lights on or anything, just all of the sudden it quit moving. Both times were while at a stop light. Oh, and when I put it in park, the rpm's jumped way up. So, what the hell does all that mean? Anyone know?

Last edited by cp2146; 01-26-2012 at 05:24 AM.
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Old 01-20-2012, 02:48 PM
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I think it means there's a Dealer visit in your future.

It's possible maybe water got somewhere it shouldn't and maybe it will clear it self when it dries, but don't know. Sorry man, wish I could be more help.
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Old 01-20-2012, 03:01 PM
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Originally Posted by smotrs View Post
I think it means there's a Dealer visit in your future.

It's possible maybe water got somewhere it shouldn't and maybe it will clear it self when it dries, but don't know. Sorry man, wish I could be more help.
Yeah, I hope that's all it is too. I'm gonna go pop the cover off the fuse box and see if it has water in it and maybe take it around the block a time or two. But definately headed to the dealer tomorrow.

Last edited by cp2146; 01-26-2012 at 05:24 AM.
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Old 01-20-2012, 03:40 PM
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Well, hmmm. No water in the fuse box and 6 trips around the test track through my neighborhood and nothing. Everything seems normal. Maybe it was just water somewhere and it dried out. Beats me. I'll see how it does over the weekend and give the dealer a call on Monday to see what they say. I'm still open to ideas if anyone has them, though.

Last edited by cp2146; 01-26-2012 at 05:25 AM.
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Old 01-20-2012, 03:50 PM
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Don't you miss the good of days when it was just an engine hooked to a trans, none of this computer crap.

Sent from my EVO using AutoGuide app.
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Old 01-20-2012, 04:59 PM
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Originally Posted by smotrs View Post
Don't you miss the good of days when it was just an engine hooked to a trans, none of this computer crap.

Sent from my EVO using AutoGuide app.
My father-in-law used to have a 1950 something Chevy flatbed hay truck. Manual tranny, split (two speed) axle, and no power anything. In fact all it had under the hood was a straight 6 with nothing but a generator on it. It took a 40 acre field to turn the dang thing and the split axle was loads of fun, but you could be sure it would always start and run.

Last edited by cp2146; 01-26-2012 at 05:29 AM.
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Old 01-20-2012, 09:23 PM
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Yeah, I used to have a couple 68 camaros. They were so easy to work on compared with these newer vehicles.

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Old 01-21-2012, 05:05 PM
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sounds like water is shorting power to some sensors, i thought someone has mentioned this one before...might wanna check underneath to make sure everything is tight and in place....there are 3 sensors on your exhaust system.
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Old 01-21-2012, 05:44 PM
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Dealer for sure. If a car wash can shut it down, what will a three day rain do?
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Old 01-21-2012, 05:52 PM
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Hyjack in progress! Injektor1 I love the paint job on your truck!
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