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2003 Volkswagen Jetta Questions

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Will the broken engine mount bracket cause the car to idle unevenly and epc light to come on. I've replaced spark plugs, coils, air filter and fuel filters but noticed my left front mount is broken. 2010 polo vivo
My #4 piston is cracked n i want it replaced how much for parts n labor
The only way would be a leaking head gasket for the 2 fluids to mix, are there any other possibilities to check for?
AC was working fine until the fan belt broke, drove the car until the battery finally died. After fixing the belt AC and fan don't work anymore
My car has an issue. It is overheating but not sure if it is thermostat or cooling system issue. Does not get hot when overheats. No leaking coolant. Water pump replaced 70K ago. Help please
The voltage at the pressure switch is also 9V. Not sure what causing the lower voltage which probably will not allow the clutch to engage. Any answers?
My heat went out this winter, it will come on but not get hot. Now the A/C is acting weird; will only blow cold on 1-3 but fan speed stays the same, also only blows when accelerating. once you change fan to 4 it kicks off the A/C and just runs outside air so not cool.
There is also gray foam in the vents.
We did change vacuum hoses back when the heat went out and did not change anything
My heat went out this winter, it will come on but not get hot. Now the A/C is acting weird; will only blow cold on 1-3 but fan speed stays the same, also only blows when accelerating. once you change fan to 4 it kicks off the A/C and just runs outside air so not cool.
There is also gray foam in the vents
Started off as: Check Engine and ASR light. Took to the VW Dealership with a diagnostic from other mechanic of bad TCM. Asked to verify and repair. Instead they did wiring harness and air filter, said is was like new. 2 weeks later same problem: they said I had a bad vacuum line, replaced and was running great. About a month after that; same problems: the did all kinds of stuff and said "When your car first came in, it had a torque signal fault and air flow meter (lean condition) faults. We are aware that part of this is a torque signal fault being recorded in the TCM" but the TCM does not need to be replaced. Sometimes my car is too lean, most of the time it is too rich. They did another wiring harness and replaced "your AFM, the grams-per-second were way off replaced your AFM, the grams-per-second were way off" Said car was running great. Another lie: Still having same problems. Asked the dealership to sell me a TCM and I will have someone else put it in and now they refuse to work on my car, refuse to sell me the parts that I am asking for and suggested I drive over an hour to a different dealership for service. I am at a loss; any ideas are appreciated!
transmsion surge whats the cause
How do I test poblem
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