Popular questions

Your car has six spark plugs, three on each "side" or "bank" of the engine. To obtain a detailed, written estimate of the cost to replace those 6 plugs, please use YourMechanic's spark plug replacement service page. To have the...

Starters sometimes develop "bad spots" on the armature (of the starter motor). That causes intermittent, unreliable operation just like what you are experiencing. The problem is easily diagnosed and the solution can be implemented at the same time (install a...

Hi there. The switch cluster could have failed causing the system to not function properly. If the fuses on the inside cab panel are all in working condition, then the switch cluster mother board has shorted out and the switch...

Unfortunately, this could mean you have bent some valves. The best test for this is to put air pressure into each cylinder and see where it leaks from. You can utilize an expensive leak down tester or simply modify a...

When reversing the jumper cables is the same as reversing the battery cables. It burns up the fuses, relays, electronic circuits and possibly the computer. If the fuses were replaced and everything in the car is working, then either the...

Hi there: If you had the throttle body replaced and the error codes still exist, it's possible that one of two things have occurred. First, if the codes were never reset and removed from the ECU, they will still show...

A broken rocker arm would definitely make a lot of noise and cause a constant misfire in the cylinder it is related to. My best advice would be to hire an experienced technician to look over the work to see...

The AdvanceTrac Warning Light is located on your instrument panel. This light will illuminate when your AdvanceTrac traction control system is currently in use, or when the system is malfunctioning. If the light stays on during normal weather conditions (when...

Hello there. Vibrations are a common symptom that have quite a few different causes. The most common causes are tires, rims, tire balance, wheel bearings, or ball joints. In some cases, when the tires are mounted onto the rims, a...

Rust on vehicle sheet metal, and the frame, is extremely difficult to stop once it gets a toehold. To "stop" rust already present on steel, every last minute trace of rust must be removed and then the metal has to...

It is possible that the low voltage from the battery may be altering the reading from the oil pressure sensor. I would suggest manually checking the oil via the dipstick and using that as a reading as to the oil...

Hello, thank you for writing in. The vehicle is struggling to keep up with all of the different accessories when the engine is idling. This is typically due to an issue with the air intake, fuel intake, or the sensors...

Hi. Generally, a silvery look to the oil indicates metal particles in the oil system. If this occurred when the oil compressor failed and the system was not thoroughly flushed, then the metal particles can wear the pistons and walls...

Your car does have a factory security system and you may need to make sure your keys are programmed to the car or it may leave you unable to start the car. Have the system scanned with a dealer or...

Hey there. Thanks for writing in about your 2005 Pontiac Grand Prix. There are many possible causes for a car not to start. Based on your description, however, I believe there is something wrong with your ignition system. I would...

This engine has eight cylinders with only one spark plug per cylinder. You have a total of eight spark plugs.

The RV's of that year on the Chevrolet chassis are generally on the P30 chassis. One weak spot in the starting system is the ignition switch itself. A voltage check at the starter solenoid will need to be performed to...

Hello there, thank you for asking about your 1993 Chevrolet C1500. Running it low on fluid can ruin the rubber seals, bearings and clutches that rely on the fluid to keep it lubricated and cool. Identify the leak first and...

The blower motor and/or blower motor resistor (two different parts that work together) may have failed causing the symptoms you are experiencing. The blower motor switch is the actual switch or button on the dash that you use to increase...

If the valve timing was off at speed, inasmuch as the 5.2L is an interference engine, you want to first rule out mechanical damage. A way to do that is perform a compression test on all cylinders. If compression is...

There is a possibility the belt can wrap around pulleys and the crank. I have seen pieces of belt get behind pulleys and a/c compressor clutches or crankshaft pulleys. If the mechanic inspects the old broken belt they can see...

Hi there. The power windows in your car are computer controlled. They have safety features such as anti-trapping windows. It’s highly irregular that both or all four windows stopped going up at the same time. But when presented with weird...

Hi there. From the description you have provided your vehicle's loss of oil needs to be repaired, before you continue driving, or this could result in catastrophic failure. The severe oil leak needs to be diagnosed and repaired, as soon...

Hi there. This is a very common issue on this vehicle. It is typically caused by a bad throttle body. The throttle body motor is a common failure on this vehicle causing the throttle to stop working correctly, and therefore...

There are many causes for the AC not to be effective: Low refrigerant is common, but not always the source. The compressor has to turn on and provide the proper circulation. The expansion valve has to create the right amount...