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Hi, thanks for writing in. I would recommend using a high mileage semi-synthetic oil. High mileage oils are designed to remove unwanted deposits created by wear and tear over time. Sometimes, switching to straight synthetic oils at high mileage can...

Hello. From the symptoms you are describing it would appear that the vehicle may be experiencing some sort of mechanical issue with the engine or transmission. The issues may or may not be related, however that should not be an...

Hello. The only sort of reset switch equipped on a Ford Expedition would be the fuel pump inertia switch. The purpose of this switch is to cut off power to the fuel pump if the computer detects a harsh impact,...

Hi there. It looks like you've replaced most of the usual suspects here, but it could be several other electrical or fuel related components that are causing your Cutlass Ciera to not fire-up including spark plug wires, spark plugs themselves,...

In normal operation, your battery should recharge while the engine is running (the alternator should supply all the power needed). However, if the car has set for some time, it’s possible that the battery may be low. To charge it,...

Mazdas are better than they used to be but they used to be terrible cars. They are nowhere near, let's say, Toyotas or Hondas, but they are not terrible cars. With that said, I personally wouldn't buy one because...

Hello - I suspect the answer to this question revolves around whether you are making other modifications to the engine, and how often you drive with boost pressure near the limit. This device will offer more precise control for managing...

The engine is designed to not go over a certain amount of RPM or engine damage can result. If you look in any vehicle that has an RPM gauge, it will have what is called a red line that the...

Your symptoms suggest a problem with both camshaft and ignition timing (driven off the cam). Given your mileage, I would suspect a worn timing chain, chain guides, and the chain tensioner. It is also possible the timing chain was loose...

Hi! I suspect the immobilizer system needs to be reprogrammed to the key or vice versa. There are a few things that can be done to reprogram an alarm system depending on how much memory the immobilizer system has lost....

Although this is a common issue on this generation of the Lincoln LS model, engine misfires can be caused by many different problems and are generally caused by either a spark or fuel issue or in some cases, a combination...

The best way to determine if this would make your vehicle street legal would be to call your local non-emergency police number and ask them if that would be legal for your vehicle. You could also call or visit the...

Hi. I believe the ambient air temperature sensor, which measures the intake air temperature for engine management, has failed. It is reporting a far higher temperature than the engine is getting, as you have noted. Engine management is creating a...

If there is lack of steering assist, the power steering pump may not be generating adequate hydraulic pressure. Of course check the drive belt first and be sure that there is no trapped air in the system (if the fluid...

To determine if the fuel pump is disconnected, turn the key to the "on" (not start) position and listen for the in tank fuel pump momentarily running (the pump should make a brief "whirring" noise and then stop). If you...

Hello. This problem may or may not be detected visually—excessive engine movement may be seen while idling—or by feel—engine movement can cause contact with the chassis or something else on the car, which one can feel. The motor mounts on...

Hello, thank you for writing in. The master cylinder may make some noises, however it is rather unlikely that you are going to hear these fluid sounding noises over the engine noise. Start by adding the differential fluid and take...

Hello. After looking into this problem, I do not see where your vehicle has rear calipers but only drum brakes. For drum brakes, if the adjuster was not retracted enough the shoes will drag too much. If your vehicle did...

The symptoms your CTS is experiencing are symptoms I have seen often in prior Cadillacs. What I suspect is that your CTS is likely dealing with problems concerning the throttle body. The engine in your CTS is equipped with an...

Hi, thanks for writing in. This sounds like your battery cable connections are corroded or loose at the battery. Try to see if the battery connections are loose by wiggling them and see if power returns. If power returns, then...

A wire could have been dislodged or disconnected beneath the dash. To get an indirect indication of this, check for spark at the spark plugs. If no spark, there is probably a primary side ignition system circuit that was "touched"...

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