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Sunfire

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Question
My water pump is bad.
There are 2 different 2.2L engines available for this vehicle and one of the requires a special tool to remove the timing chain driven water pump. The moisture with the green tint is likely to be engine coolant. Consider hiring...
Question
My car revs uo and down when below when below 2000 rpm above that it works fine
Hi there. As you already know, replacing components without diagnoses can be expensive and time consuming without resolution. Performing a fuel pressure test may identify whether the fuel pressure regulator is causing the surging rpm (revolutions per minute) below 2,000rpm....
Question
Windshield wiper assembly question.
Hi there: If you got the replacement parts from an auto parts store, you might want to verify that the replacement parts were for the right model and year of Pontiac Sunfire (as this is a common problem with auto...
Question
Why doesn't my defroster work in my 2003 Pontiac Sunfire
Hello. If the rear defroster is working like you explain then it sounds like the rear window needs to be replaced. As the element in the window begins to short out internally various parts of it will stop working until...
Question
car only runs for a second or two when i try to start it...
A faulty ignition switch can cause the vehicle to stall. The 1998 Sunfire was the subject of an ignition switch recall, announced in 2004, but not having your specific vehicle identification number (VIN) it's hard to say whether your specific...
Question
I am looking to see what it making my check engine light go on. I need to verify that it is only the oxygen sensor and replace it.
Hi there: The best way to determine which O2 sensor is faulty is to have a professional mechanic complete a check engine light inspection. This will allow them to pull all error codes and pinpoint which sensor (or both in...
Question
The turn signals turn on instead of the low beams
Hello, thank you for writing in. Turn signal and low bean circuits both route through the dashboard and possibly the steering column. There are several components and areas in which these two circuits could come in contact with each other....
Question
in the base or value trim level, is onstar wired into the stereo?
Hello. If your vehicle is indeed equipped with OnStar then it is likely that it is wired directly into the stock radio unit, as that is how most OnStar systems are installed. It appears that replacing the original radio with...
Question
Driving, then engine/oil light turns on, steering locks up, car dies; but just fine after turning off than on.
Any time loss of steering, or power assist to the steering is lost, it can be a safety issue and should be looked into as soon as possible. If the oil light and/or check engine light are flashing before it...
Question
Experiencing a knocking noise while I'm decreasing speed on the highway. I have examined the up&lower ball joints, tire rods, axle
Hello, thank you for writing in. Inspecting the suspension and steering components was a great idea. Did you perform a visual inspection, or did you actually raise the vehicle and maneuver the parts to check for excess play? However the...
Question
Overheating issue and coolant draining after replacing head gasket
Hello. Was there any issue with the coolant before this point? If so, the blown head gasket may be a result of the engine overheating due to lack of coolant. You should start by pressure testing the cooling system. Make...
Question
1998 Pontiac Sunfire 2.2L Replace intake air temp sensor but still get code PO113. What's going on?
Hi There, Generally, this code is related to the sensor itself failing or in many cases failed connections or an internal wiring short, which results in this code being triggered even when the sensor is functioning properly. Since you have...
Question
Burining Oil Smell, Car has Oil leak
Hello, It sounds like your oil leak may be causing the oil to be burned on the hot engine which is likely producing the burning oil smell you describe. This is generally not something too critical to worry about if...
Question
Water pump gasket leaking
Removing the water pump on your vehicle is a 6 hour job and consequently involves pages of procedures, torque specifications, and a lot of detail. Due to the amount of time involved, it is not worth it re-installing the old...
Question
Alternator
The two alternators are not compatible. They come from two different years and size motors are different. The Old Alero is a 2.4l and Pont Sunfire is 2.2 motor. The wiring is different for the two alternators.
Question
My oil light pops up and won't go away 1999 Pontiac Sunfire
Hello - if the oil pressure is truly low enough to cause the oil pressure light to illuminate, the problem is likely not with the oil pump, but with worn connecting rod and crankshaft main bearings. Excess wear on these...
Question
My car is not gasing when I hit the gas. I was at a red light and it wouldnt move, it was like it just locked?
Hello, thank you for writing in. There are several sensors related to the fuel system, and having that code would be beneficial for us. However, we can start with an assumption that it may have been the fuel pressure sensor,...
Question
squeal sound from rear passenger wheel when driving bumpy roads
The noise is probably brake or wheel bearing related. If brake related, it might be due to the brake pad wear indicator contacting the rotors. If you desire that this problem be diagnosed by a certified Mechanic, dispatched by YourMechanic...
Question
Car has leak and water in engine
Hello and thanks for writing in. Unfortunately, what you are describing sounds like a blown head gasket. A blown head gasket may cause a number of different symptoms. A head gasket that fails between cylinders will generally cause a misfire...
Question
Hi, I have a 2003 pontiac sunfire that is getting water in my engine. It looks like water is leaking from somewhere between my eng
Engine coolant can leak externally through a hose, radiator, water pump, etc. or internally due to a leaking head gasket and sometimes a leaking intake manifold gasket depending on the engine design. External leaks are typically found by simple pressure...

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