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V8-4.2L

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Question
Massive vibration after 40 mph or once I go from 4th to 5th gear.
Hi Darryl. Thanks for contacting us today. Generally speaking, a single cylinder misfire will gradually create a steady vibration, but not stop when you're accelerating. The type of vibration you're describing is often caused by a transmission or engine mount,...
Question
I have an 2005, 4.2 S type. I replaced the Battery, radiator, radiator fan, thermostat, tps sensor, fuel pressure sensor, fuel pum
Hi Rashad. Thanks for contacting us today. There are several things that could be causing this problem, ranging from mass air flow sensor damage, to an EGR valve that is excessively clogged with carbon debris or even fuel injectors or...
Question
Issues acceleration sometimes and gears won't shift
Hi Natalie. Thanks for contacting us today. In most cases, symptoms like you have described are caused by dirty transmission fluid, or debris stuck in the inner transmission hydraulic lines that need to be flushed. It is also possible that...
Question
Air suspension failure due to damaged components?
Hello, thank you for writing in. The only component that should be in that area is the air suspension strut itself, its sensor, and its electrical connections. Due the the damage being electrical, its possible you have tampered with that...
Question
Do I need to get my car aligned after new strut
In most modern vehicles with what is known as a "MacPherson" style strut, which allows for camber and caster adjustments. When new struts are installed, this creates a slight shift in these adjustments, which throws off the previous adjusted alignment....
Question
In my 2007 Audi S4 I can roll the windows up and down from the drivers door in back. But I can’t roll them up from the backseat or
You will need to have the drivers window switch checked to see if the rear lockout switch is making contact to allow the rear switches to work. You may need to replace drivers door switch.
Question
Mercedes Mercedes Benz 1996 won't start after overheating
If your vehicle will not start after it has overheated, it is possible that the head gasket is blown or the cylinder has been warped. This could cause a low compression issue. Engines will not start with low compression depending...
Question
What are FUCA Bushings? I’m told the Rearward and Forward are worn and need replacing...?
From the description you give FUCA means front upper control arm bushings. The control arm has a front and rearward bushing.
Question
My 1996 S420 mercedes will start and i replaced the shifter module assembly now its rolling in reverse while in park.
You will need to have the shift rod on transmission lever adjusted to make sure the transmission is going all the way to lock in park when shifter is locked in park position. Make sure to look for any worn...
Question
My audi q7 runs for approximately 30 minutes then shuts off i have replaced both fuel pumps the pressure regulator ignition switch
Hi Carlos. There are several things that can cause the type of issue you are describing - several of which it appears you've already replaced. Generally speaking, a vacuum leak, clogged or dirty fuel system components (like mass air flow...
Question
When I rev my engine it chokes starting around 4k rpm when I drive the car the problem doesnt happen. only when reved
It sounds like you may have a fuel supply problem in getting the proper amount of fuel to the fuel injectors. As you know, when you turn the key to on, the fuel pump is activated and the fuel system...
Question
Performance restriction
Based on the symptoms you're having, I would recommend having your vehicle inspected by a qualified professional with a check engine light is on inspection. This will be able to determine the exact cause of this issue. Consider YourMechanic as...
Question
1988 mercedes 420sel how do you self diagnostic check check engine light is on continually in the car
If the vehicle has an 8 (or 16) pin data connector, you can use a reader and refer to a MB Fault Code Manual for Model Years 1988-1997. The blinking codes are also documented in the Factory Service Manual (copies...
Question
Manual transmission; car acts as if clutch is always pressed; can start, wont put any power to wheels, can shift gears easy.
If the clutch is not engaging a major component has failed such as the pressure plate, diaphragm spring or possibly input shaft components which have splines on them. Although a mechanic will perform some initial checks to rule out simpler...
Question
I Have a 2004 Jaguar That I can not push when I put it in neutral, the parking brake is off? What to do?
Hi B. Thanks for contacting us tonight. Since you've just purchased this vehicle, it's probably best to have a professional mechanic complete a detailed inspection, since there are several trouble issues apparently with your Jaguar. It might be best to...
Question
need to adjust shift selector cable in center console area 2003 jaguar s type
The S-Type Shop Manual shows at least a 19 step process involved in checking and adjusting the cable and you must have access to the manual lever on the transmission (beneath the car) to perform the adjustment. In addition, there...
Question
I have a Audi 2007 q7 and my epic light is on and my cars shakes a little while driving and idling a little what could I.t be
You will need to have the computer tested to find out what codes are stored in memory and then have those codes tested to find out why the check engine light and EPC light is on. A mechanic like one...
Question
I have a check oil light that's always on but the oil pressure is good how do you fix the light
You will need to have computer tested for codes and diagnose the codes and then have the oil pressure tested with a manual gauge and if pressure is good then replace the oil pressure sending unit and retest system. ...
Question
check engine light is on and gas light is flashing on my 1998 s420 mercedes Benz
Hi Jesse. Thanks for contacting us today. In most cases, a faulty gas cap or one that is not screwed on tight will cause the gas light and check engine light to illuminate. it's also possible that one of the...
Question
WIndow regulator/motor replacement
If the motor is fully functional, then yes, the mechanical component (regulator, track, and so forth) are probably binding and thus servicing those components should resolve the issue. However, that's "if" the motor is fully functional. You could have a...

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