Question: I have a 2004 Chevy Impala LS with a 3800 6 cylinder Engine. It has 76000 miles on it and the check engine light was on. My mechanic told me that my radiator was never flushed and oil was mixing in with the radiator fluid. (Sounds to me like I had a bad head gasket).

The repairs along with a
serpentine belt replacement cost me over $1100 to get repaired. I started hearing a whining sound and I thought there was a bad bearing on the belt tension guide. The engine light comes back on two weeks later and it $625 to fix the EGR valve with an oil change. I asked them to check on the whining noise and the mechanic showed me was whenever the oil cap is removed, with the engine running, the whining stops. Says he never seen anything like that in the 20 years he been an ASE mechanic.

Says I need some valve work done and that is going to cost more. After paying $1800 into repairs, with more to come. Is this common for the 2004 Impala LS or is the mechanic looking to finance his second vacation home? Any suggestions would be greatly appreciated.

Answer:
What repairs were done for the first $1100. This sounds like a problem one of my Tech's has seen. Was there something done with
intake manifold of gaskets?

On Dec 16th An Engine Light error message indicating a Coolant Thermostat was needed. Replace Anti-Freeze, Intake Manifold Reseal/requiring intake manifold set, lower gasket intake and nipples. An oil change with Valvoline High Mileage Lube and Filter. Serpentine Belt Oil Drain plug, and Diagnostic Charge all for $1,034.39On Feb 19th after engine light came on again.I needed an EGR valve. Fuel System Cleaning and de-carbon. All for $627.88.

Answer:
OK. Then I have the answer as to why the engine is making that sound, and when removing the oil cap it stops. Your engine is also burning oil. This is not a valve train problem, DO NOT have him take the engine apart !. The mechanic that did the intake work messed up. He forgot to put in the PCV valve, or forgot an O' ring on the PCV valve. This is the reason for your problem. See this link for location of
3800 PCV Valve.
2002 Chevy Impala 3800 V6.
Repairs: I replaced both heater hose fittings because one of them cracked.  Everything went back together fine.
Question:
I had no problems with the car before I replaced the heater hose fittings.  It actually cracked as I was pulling into my driveway so I don't think that I overheated the car. After making the repairs and putting it back together, the car won't start.  I've had the battery checked and it's at 100%.  The lights, windows, automatic seat, and everything else electrical inside the car work... except the radio.  It doesn't light up or anything. It doesn't even try to start.  There's no clicking noise like when the battery needs jumped.

Answer;
With radio not working, i would suggest checking all the
fuses first.
Is the theft / security light on the dash? If so you have a problem in the security system of the car. If not, you need to have some basic diagnosis done. First, you would need to have the purple wire at the starter checked for power when trying to start the car. This wire is the starter solenoid wire. If it does have power, then the starter is bad. If no power, then further diagnosis is needed to find out why it does not crank. Possible ignition switch, crank relay, wiring problem, etc. None of this would be related to that coolant fitting.
Chevy Impala Engine Noise- Won't Start

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