- #143 of 155
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2006 HHR..Engine "Reduced Engine Pwr
by dfalsetti
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Sep 03, 2008 (9:28 am)
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reposting! While using cruise control, foot bumped gas pedal, doing 70 MPH, this alert came on. It slows the car down and I couldn't accelerate higher, had to pull off road on the freeway. Happened again after starting up...Engine light comes on :REDUCED ENGINE PWR" ALERT comes on....I had to stop, park, turn off, start again about 6 times. I found if I take my KEY OUT it resets, and sometimes engine light stays on until next start up. I got this car about 7/1/08 without a manual at a dealers auction , otherwise i really like this car. ANY THOUGHTS HERE? 
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- #144 of 155
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Re: HHR 06 "REDUCED ENGINE PWR"...ALERT [ray80]
by dfalsetti
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Sep 03, 2008 (9:31 am)
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Replying to: ray80 (Sep 03, 2008 2:57 am)
HAPPENS THEN RUNS GREAT. THANK YOU I WILL ASK OUR MECHANIC ABOUT THAT. HAVE YOU HEARD OF THIS BEFORE??? 
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- #145 of 155
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Re: HHR 06 "REDUCED ENGINE PWR"...ALERT [dfalsetti]
by ray80
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Sep 04, 2008 (5:32 am)
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Replying to: dfalsetti (Sep 03, 2008 9:31 am)
I have heard about a couple possible issues. One was a wireing problem that may affect some early ones, there is a large bundle of wires on top of engine (slightly to right if looking from the front) that pass through a piece of metal (kind of like a U but not really a clamp that can become frayed and cause various problems (including reduced power message). The other is an issue wirh wires going to ECM and not having good connection.
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- #146 of 155
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Re: HHR 06 "REDUCED ENGINE PWR"...ALERT [ray80]
by sleekitten
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Sep 04, 2008 (6:24 am)
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Replying to: ray80 (Sep 03, 2008 2:57 am)
It seems that the engine power does not reduce. The computer cycles--the driver's window does not go down, the light on the the door lock, side view mirror, and window control panel on the driver's side does not illuminate (This only happens sometimes), but the passenger side works, the sys. mon. lights up, the traction control lights up, etc. This vehicle has been to the dealership many times, the BCM has been changed approximately eight times. Also, the remote to lock and unlock does not function. When this happens, the radio also does not work.
Please help.
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- #147 of 155
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Re: HHR 06 "REDUCED ENGINE PWR"...ALERT [sleekitten]
by ray80
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Sep 04, 2008 (6:39 am)
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Replying to: sleekitten (Sep 04, 2008 6:24 am)
Yours sounds like a very different (and complicated) problem. 8 BCM replacements just sounds like dealer is throwing parts at it (although the BCM does have its hands in many of the things you say are happening). I think the first thing I might do in your case is to make sure all the fuses are properly seated. I would hope the dealer would have checked to make sure BCM connections are tight and any ground wires in cabin are properly seated.
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- #148 of 155
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Re: HHR 06 "REDUCED ENGINE PWR"...ALERT [ray80]
by sleekitten
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Sep 05, 2008 (12:34 pm)
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Replying to: ray80 (Sep 04, 2008 6:39 am)
When you say make sure the "fuses are seated", do you mean to make sure they are plugged in properly? Also, where are the ground wires? Thank you.
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- #149 of 155
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Re: HHR 06 "REDUCED ENGINE PWR"...ALERT [sleekitten]
by ray80
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Sep 08, 2008 (4:11 am)
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Replying to: sleekitten (Sep 05, 2008 12:34 pm)
Yes, just push down on the fuses to make sure they are tight. The ground(s) should be somewhere behind the dash (dealer would know where).
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- #151 of 155
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Re: Front end grinding/scuffing noise & MPG [brkdrvr]
by brismith336
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Jul 22, 2009 (6:07 pm)
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Replying to: brkdrvr (Jan 22, 2008 9:32 am)
Did you ever get this problem resolved? My 08 is doing the same thing. The dealer said they couldn't "pinpoint" the issue thought it was bearing in the hub or something in the transmission. They replaced the bearing just before I picked it up and asked me to try it, but it's still there. Trans?
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- #152 of 155
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Re: HHR 06 "REDUCED ENGINE PWR"...ALERT [ray80]
by dadd75
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Jul 28, 2009 (2:42 pm)
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Replying to: ray80 (Sep 03, 2008 2:57 am)
I have a 07 HHR LT, 2.2 engine and after a couple of month I also got the reduced engine power alert and lost power. Had it in the shop four times before they found the problem. I had installed a cold air intake and they said that was causing it, but I knew it didn't, the dealership was lost.
Well, a bulletin came out finally and there is a grounding bar behind the drivers side kickplate that had gotten wet from driving thru car washes and became corroded. They fixed that and have had no problems for the past 2.5 years.
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