Making a low,short sound. Sounds like gargling, guttural,grunting when the engine is running. Sounds like the sound is coming from behind the dash. Can't hear it when I opened the hood. Just started hearing it when I turned on the A/C. Then I turned off the A/C and turned of the engine. When I start the engine I can hear the sound with out the A/C on. Its not loud, but I can hear it. I just heard the guys on CarTalks this past Sunday with a caller with a similar sound/problem. CarTalks thought is may be the water pump. Any ideas?
The sound is the heater getting air in it from air in the cooling system. Have the system pressure tested for leaks.
SOURCE: Need to replace water pump on a 03 Cadillac cts I
I do not mean to be hurtful and it will take some time to do. Maybe all day if you have no experience. If you need instructions just maybe you should have some do it for you.
SOURCE: I have an cadillac Cts 2003 with starting problems
the plugs are the problem, they become unable to ignite all the fuel when in idle, so that they get wet and won't give any spark until dry. try to replace them. if there's no difference the problem is at the admission system(fuel pump maybe)
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