Popular questions

Hello. From what you describe it seems that your vehicle has more than one issue. Oil in the intake is usually caused by a dirty or clogged positive crankcase ventilation (PCV) valve or system. I would check to make sure...

Hello. Since you will need to have the tire repaired or replaced anyway, I recommend having the brakes and front end checked to see what may be causing the noise. Your tire may have cords hanging out of the tire...

Hi there: The OBD-II error code P0420 generally indicates a Catalyst System Efficiency is below threshold (Bank 1). The upstream oxygen sensor is located in front of the catalytic converter. If the upstream oxygen sensor is working properly, its readings...

Hi there, thanks for writing in about your 2008 Mercury Milan. You'll need to replace the broken serpentine belt after checking all the pulleys and tensioner to see if they were the cause of the broken belt. Then install the...

It sounds like you are low on power steering fluid; power steering pumps are very noisy when they are low on fluid. You will also lack power assist. Check the reservoir with the engine off; if the fluid level is...

If the dipstick is missing for your transmission, it would be somewhat difficult to determine if the fluid is at the correct level or not. I would strongly recommend having a replacement dipstick inserted before adding any fluid to the...

Ford had a technical service bulletin on these back in May of 2008 involving replacing sun gears and other components on models built before March 15, 2008. If yours falls into this category, hopefully the replacement you received incorporated the...

Hello. Though this can be caused by a number of things, the most common on your car is a bad engine mount. It is very common for multiple mounts to fail, but the most common is the front mount. When...

This suggests your power steering pump may be failing or you have a leak elsewhere in one of the power steering lines. The [power steering]((https://www.yourmechanic.com/services/power-steering-fluid-is-leaking-inspection) system operates on very high pressurized hydraulic pressure (in some cases as much as 300...

Hello, and thank you for writing in. Without any signs of exterior coolant leaks, the leak will likely be interior. Most commonly this is a result of a failed head gasket. It will allow the coolant into the combustion chamber,...

Hello, thank you for writing in. The throttle position sensor does not take inputs from anything, but instead it acts as an input to the ECU (the main computer). The ECU then uses it for engine performance. The sensor's resistance...

After some testing done to verify the EGR valve flow to see if the valve is intermittently sticking open causing the stall. This can be done using a scanner with the capability to open and close the EGR valve and...

What you do next depends on what particular part of the smog test your car failed. The car is tested for HC, CO and NOx levels. Different problems will raise the levels of different pollutants. If your car failed the...

You may have a bad strut or strut bushings or some other worn out front end part. I would recommend having a mechanic inspect the complete front end to isolate any problems you may have. I have seen struts and...

Lexus does not catalog, and thus does not vend, a "direct" part number for a compact spare on your vehicle. However, the compact spare used on the GS 350 might fit your vehicle and so you can check that first...

It sounds like you may have a problem with rust an scale build up in the engine. This build up may have worn the impeller on the water pump and this is why it only overheats at low engine RPMs....

Hi there. If the O/D light was blinking, then that typically means that the computer is seeing a transmission problem. It can be as simple as a speed sensor or as complicated as a serious internal transmission failure. This can...

Hi Charles. Thanks for contacting us today. If you're not getting any fuel pressure at the fuel rail, there are two usual suspects. Either you've got an obstruction somewhere in the fuel lines (from the pump to the fuel rail...

While a bad O2 sensor can be the cause of a 'lean" fault code, it can be set for a number of reasons. A vacuum leak anywhere in the intake system can cause a lean fault as can other sensors...

Without any information about the vehicle, I can say this. Many cars today have oil change intervals of 7500 miles and even up to 15,000+ miles. Going 7000 miles between oil changes is generally not going to be the cause...

Hi there. Check the fuel filter in the fuel line and see if its plugged. Then check the fuel pressure regulator at it controls the fuel pressure on the fuel rail. If the fuel filter and fuel pressure regulator are...

For the 1995 G-20, all of the brackets in the location you describe are listed in GM parts catalogs. Using those catalogs, and your description, I narrowed it down to 5 possible GM part numbers: 10187650, 10179211, 10163742, 10163742, 10028767....

Prior to performing diagnostics be sure that you have a fully, 100% charged battery that passes a load test. Confirm that the engine immobilizer system (security system) is not activated thus preventing the car from starting. If the immobilizer system...

The car is worth between $5500 and $6500 with a running motor. If you spend $3500 to fix it then sell it outright you may profit about $2000 to $3000. If you trade it you may get $4500 or less...

In today's vehicles, the majority of cars are able to go between 5,000-6,000 miles between oil changes depending on the health of the car's engine and assuming you are using a quality oil. For some, this is a matter of...