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Chevrolet Impala 2005 and earlier

13540 messages,  Last post on Nov 30, 2009 at 7:08 AM

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What is this discussion about? Chevrolet Impala, Sedan

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#13533 of 13540 Re: 2002 Imapla Manifold Gasket leaks [nosirrahg] by rob05 Sep 10, 2009 (7:59 pm)
Replying to: nosirrahg (Sep 03, 2009 5:14 am) your so right...i hit my iss with a good dose of ppblaster - no more clunk in the steering column whatsoever..... 2005 impala
#13534 of 13540 Re: 2005 impala [rob05] by nosirrahg Sep 15, 2009 (9:55 am)
Replying to: rob05 (Sep 10, 2009 7:57 pm) I'd have to dig around a little more, but I'm pretty sure the Impala has a timing chain instead of a belt...I don't recall any maintenance guideline about replacing a belt at some certain mileage point. I drove mine for 114k miles before I sold it (3.8l engine) and never replaced a timing belt; I did have the serpentine belt replaced that runs all the accessories (i.e. the "fan belt") just as a precaution at maybe 70-80k miles, but that's it.
#13535 of 13540 2004 Malibu over heating? by ark5 Nov 27, 2009 (6:29 am)
During warm up, my Malibu will not heat. I will increase idle speed and at times, will get too much heat. When this happens the temp gauge is in normal range. Other times I will get no heat at idle and after driving < 1 mile the temp gauge will go into the red range and drop back down to normal. At other times in the red range, the car will power down to minimize damage and then return to normal. The water pump and thermostat is new. The intake gaskets have been replaced as well. I am taking a beating on repair costs and am still experiencing problems. There is no smell of fluid therefore, I assume heater core is fine. Has anyone experienced similar issues and found a solution? Replies to this message: revjim64 (Nov 27, 2009 8:32 am) ark5 (Nov 27, 2009 3:56 pm) revjim64 (Nov 30, 2009 7:08 am)
#13536 of 13540 Re: 2004 Malibu over heating? [ark5] by revjim64 Nov 27, 2009 (8:32 am)
Replying to: ark5 (Nov 27, 2009 6:29 am) When you replaced the thermastat and waterpump did you have the cooling system flushed? If not, you may want to flush the system. You may also want to get a new radiator cap too. If they go bad they won't release the pressure when the coolant temp gets hot.   Also, Verify that the electric fan is coming on. When the engine gets hot, pop the hood open and check to see if the fan comes on.   You may also have a defective thermostat.   Or, your worse case scenario, is that you have a leaky headgasket.   Good Luck Replies to this message: ark5 (Nov 27, 2009 3:56 pm) revjim64 (Nov 30, 2009 7:08 am)
#13537 of 13540 Re: 2005 impala [rob05] by revjim64 Nov 27, 2009 (8:38 am)
Replying to: rob05 (Sep 10, 2009 7:57 pm) The 2005 Impala V-6 has a timing chain.   You do have a serpentine belt that operates the power steering, ac, and the waterpump. You may want to change the serpentine belt every 20k or 2yrs.   The belt costs about 20-25bucks and is easy to install.
#13538 of 13540 Intermediate Steering Shaft "clunking" by nosirrahg Nov 27, 2009 (10:04 am)
I don't know if this is related to the problem that the 2000-2005 Impalas experienced, but thought it was worth passing along:   http://www.usatoday.com/money/autos/2009-11-23-gm-steering_N.htm?csp=Cars
#13539 of 13540 Re: 2004 Malibu over heating? [revjim64] by ark5 Nov 27, 2009 (3:56 pm)
Replying to: revjim64 (Nov 27, 2009 8:32 am) Yes, the system was flushed and the engine cooling fans are working. My mechanic told me today that the thermostat was defective and he replaced it at n/c. In addition, he told me that the head gaskets are leaking internally. I don't have a rough idle or vapor coming from the tailpipe however, I am told that that is not always the case. I am not sure if the mechanic performed a compression test on the cylinders or a just a radiator pressure test. I will ask what lead him to conclude a leaky head gasket. I am beginning to wonder if the replacement of the intake gaskets was even necessary. Perhaps it was the head gasket all along. At this point, I am looking at $1,080 + tax to replace the head gaskets. Ouch Replies to this message: revjim64 (Nov 30, 2009 7:08 am)
#13540 of 13540 Re: 2004 Malibu over heating? [ark5] by revjim64 Nov 30, 2009 (7:08 am)
Replying to: ark5 (Nov 27, 2009 3:56 pm) The leaky upper intake manifold is a common problem with Chevy Impalas and Malibus. My 2002 impala had a leaky intake manifold gasket. I just added some stop leak becuase I didn't have $600. 00 to get it done.   The head gasket probably went bad because your engine was overheating as a result of the defective thermostat. You may want to ask the dealer to give you a price break. I bet you can knock the price down to $600-800 for a the head job.   Good luck!!

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