Popular questions

Hi there. Check the blend doors to the air conditioning and heating system. If the outside blend door actuator is not working properly or if it's open to the outside air, it will draw air from inside the engine compartment....

Depending on the year, make, and model of your vehicle, the light means you need to do a parked regeneration of the catalyst. Your vehicle may also be telling you it is regenerating. To be sure, I'd suggest having a...

It sounds like your speed sensor on the back of the transmission has failed. I would certainly recommend having it professionally tested to verify this diagnosis but this is the most likely cause. If the gauge cluster is still displaying...

Hi there. It sounds like it may be the door latch switch may have stopped working. It seems to be a common problem with this car and can be fixed easily. A common sign of the switch going bad is...

The shift interlock and the intermittent starting issue are likely separate issues. However, the brake light issue may be related to the shift interlock problem as the circuitry and components are common. The intermittent starting is relatively easy to diagnose....

It certainly can. My experience with those Mitsubishis is that they have a lot of problems with the fuel injectors when they get old. First, I would have a mechanic clean the fuel injectors. Sometimes, it’s that simple. Knowing...

As you know, this may be a result of a faulty fuel pump. This may also be a result of a failing fuel pressure regulator as well. This is what monitors the fuel pressure in the system and maintains pressure...

Hi David. Thanks for sending your question to us tonight. Unfortunately, when a vehicle in involved in an accident and multiple replacements have been completed, it's nearly impossible to determine the source of a vibration as you are describing without...

The rebuild could be reasonable as long as the mechanic is including the parts to the engine and not separate. I recommend getting a written statement or work order that states the amount of labor charge and the cost of...

The problem may not be a fuel-related issue but spark or timing. If the engine speed sensor is failing and the computer cannot determine, which cylinder to fire the vehicle will not start. These sensors can often fail intermittently where...

Hi there. First check the transmission position sensor to see if the wiring harness has a short to ground or the sensor is failing. This sensor will cause the engine to shut off in the event that the computer...

Hello. In most cases the AC system should not affect the operation of the engine. If the issues only began after the AC was installed, it may be possible that the issue developed while the AC was being worked on....

Hey there. I would start by checking the speed sensors. The plug that connects to this in the engine bay can become wet and can cause this type of problem. Also, check the alternator, and VSS (vehicle speed sensor) fuse...

If there was no loss of power prior to this incident, a possibility is the new timing belt is mispositioned. You can check for that indirectly by measuring intake vacuum at idle. If intake vacuum is below the low end...

It sounds like you might be having an electrical issue. I would recommend having your alternator inspected by a qualified professional to determine if it is functioning properly. Alternator failures can cause multiple electrical symptoms that are abnormal.

Any car at 100,000 miles or more can have any number of issues come up. The things I list may not be exclusively A8 issues, but issues you can expect as more miles and time accumulate. Air suspension issues can...

Hi there. Unfortunately, our mobile mechanics do not offer engine swap services in North America, so we're really not best suited to answer this question for you. The best advice we can offer is for you to contact a local...

Hi. Is there any power coming from the top of the distributor? The ignition coil itself may not be firing correctly and should be inspected. The coil is controlled by the ECU which does have the possibility of crashing as...

Hi there. It sounds like you may have a low fuel pressure concern. A car can idle with low pressure, however when demand is placed on the system it will fail as in your case. The engine is possibly starving...

Hi there, thanks for writing in about your 1990 Volvo 740. The symptoms sound similar to a vehicle suffering from a boost leak or electronic air metering and fuel delivery faults. The vehicles do not have the new OBD-II ports,...

These cars are known for having faulty crankshaft position sensors. This sensor can cause an extended cranking condition, which eventually turns into a vehicle that won't start. Checking for diagnostic codes stored in your power train control module (PCM) would...