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Pontiac Grand Am Changing Water Pump

19 messages,  Last post on Jun 23, 2008 at 6:25 AM

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#17 of 19 Re: grand am problem [bamburgey] by burdawg Mar 03, 2008 (6:39 am)
Replying to: bamburgey (Mar 02, 2008 9:06 pm) Is it a 4 cylinder or V6? Was the oil light flickering all the time or only at idle? Did this light flickering start right away after you picked it up or later?
#18 of 19 Re: grand am problem [bamburgey] by banshee05 Jun 18, 2008 (5:42 pm)
Replying to: bamburgey (Mar 02, 2008 9:06 pm) i just did the water pump on my 99 grand am 4 cyl. worst water pump job ive ever encountered. my motor was full of oil during the whole job never left your tech. must have drained it and forgot to refill unless there is a big leak?? I learned a valuable lesson during the grand am water pump job, while i had everything open i changed the thermostat, o2 sensor while the manifold was out, backflush the system all the good stuff but i made the mistake of putting it all back together with the original timing chain and tensioner well after putting the timing cover back on (25 bolts) motor mount back on coolant tank back in place and cruise control back in and the balancer and s belt on i started the car and it was great took it for a spin and when i got 2 miles away and got to normal operating temperature i heard a terrible wrapping sound and i immediately knew it was the chain i just knew it so as it would turn out i had jack up the motor all over again,pull the balancer, timing cover, coolant tank, cruise control, i mean i was beyond furious so i rip it all apart again this time in 1 hour flat! lol so i came to the conclusion that the tensioner was failing only after warm up when the oil thinned out and the oil pressure dropped being the tensioner runs off of oil pressure it didnt malfunction until warm up and also only at idle if you tapped the gas which lightly increased pressure the noise went away so after new chain, tensioner assembly, and the three guides ( i wasnt taking anymore foolish chances) the Ga was better than new. The Ga had alot of recalls too many issues gotta do the work myself.
#19 of 19 2002 Grand Am Replace Water Pump by kristi448 Jun 23, 2008 (6:25 am)
I have a 2002 Grand Am and my boyfriend and his father replaced my water pump this past weekend, it was actually changed twice. After the first water pump was put in, my car made a screaming noise and the only thing they could figure out what was causing the loud noise was that the pump had to have a defect so they took it back and got another on from O'Reilly's Auto parts. Once they had the second pump in, the car still made a loud (not as loud as the first pump) annoying humming sound. The pump works as it is supposed to but they can't figure out what is causing the noise still. They called around and talked to a few shops and auto part stores and they keep getting told that the serpentine belt is not positioned correctly, but my car does not run of the serpentine belt, it is ran off the timing. The only suggestions they were given was to buy a water pump conditioner, which we did and there is no change in the noise. Any suggestions?

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