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H4-2.5L

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Question
Overheating only when i drive not sitting still
Hi there: Sometimes the issue you're describing is caused by air bubbles that are trapped in the coolant system or a problem with the water pump. As the engine accelerates, the flow of the coolant through the system is also...
Question
The code p0102 shows up after cleaning the mass air flow sensor.
Hi and thanks for contacting Your Mechanic. The wiring harness to the mass air flow sensor (MAF) could have a break in the wires. Disconnect your battery and remove the harness to the MAF and your computer. Use a digital...
Question
Alternator is dead!
This may be related to a failing alternator or voltage regulator. It is not at all uncommon for an alternator to fail. As you may know, the alternator is responsible for charging the battery while the engine runs by generating...
Question
misfire cylinder 1 and 2
Hello. A misfire can be caused by a variety of components. Due to the oil smell we can focus in on a few potential issues. If you are noticing any kind of smoke during acceleration or deceleration, then you may...
Question
Do i need new engine? 1999 Subaru Forrester
Hello - yes, quite likely you are facing engine failure and will need to replace the engine. If there is an active leak,such that it is difficult to simply add oil and keep it in the engine, running or not,...
Question
ABS sensor and changing break fluid
Wheel speed sensors are part of the electronics of the anti-lock system. While they're an integral part of the brake system, they are separate from the hydraulic components of the brake system. Short of possibly having to move an ABS...
Question
Added 2 quarts of oil about two weeks ago, oil is almost gone now.
Broadly, if you are using more than 1 quart during a 1,000 to 2,000 mile interval, then the oil consumption is considered excessive. So, you should be able to go at least 1,000 miles without losing more than 1 quart,...
Question
Loss of power in 1st gear
Hi there. Adjusting turbo boost for this engine is a compromise at best. Setting boost to be optimal for 3rd, 4th and 5th gear (without over-boosting) means 1st and 2nd gear don't get that much boost. Stepping up boost for...
Question
Head Gasket leak
This is more of a judgment question as to how much you enjoy your car. A head gasket repair job can be costly and may generally run anywhere from $1,000-1,600 depending on the shop doing the repairs and what parts...
Question
Intake valve control solenoid
Hello - these 2 components mount on each cylinder head, and are partially visible at the "nose" (accessory belt end) of the engine. They use engine oil pressure to vary cam timing relative to the static cam/crankshaft timing relationship. Here...
Question
TIMING BELT CHANGE
Hi there: If the vehicle was serviced by dealerships, then pulling a VIN report from the dealership should tell you what service has been completed. However, it's hard to know for sure if service has been completed on a belt...
Question
What is causing the stiffness in steering?
Hi there: There are many items that could cause the steering wheel to be hard to steer initially. Sometimes, low air pressure can cause this issue. As the tires develop more heat, air pressure will increase (sometimes as much as...
Question
No parking light bulbs, the good fuses blew. Removed all of the parking bulbs and replaced the fuses. The fuse didn't blow till a bulb is plugged in.
Hello. You likely have a short somewhere in the circuit. This may be related to other light circuits, a terminal or connection, or by a damaged wire. You can start by performing a visual inspection. A rule of thumb is...
Question
Coolant leaking from somewhere. No clue where from.
Hello. Locating a coolant leak can be a challenge. The coolant system operates under a low pressure. When you need to locate a leak, you must create that pressure. There is a tool called a coolant pressure tester that can...
Question
At oil temp light flashing
Hello. Yes, your warning light will illuminate when the automatic transmission fluid is low. The transmission is one of the components that will turn on a "check engine" light. The reason you are low on transmission fluid may be the...
Question
I just had my tires changed and now my abs light is on
Your car is equipped with wheel speed sensors at each of the four wheels which monitor wheel speed while relaying this information constantly to the ABS and traction control system which are controlled by the car's ECU. When the ECU...
Question
My car is overheating and my heater is blowing cold air on and off
The heater not working in some cases may be related to the overheating problem you are also having. This may be due to a faulty heater blower motor or potentially a bad heater core. As you may know, the heater...
Question
timing belt lifespan
The timing belt is recommended to be replaced at 105,000 miles. It should be inspected every three years if mileage is low. It may still get dry rot for excessive years.
Question
I have a 2003 Subaru Forester and upon starting this morning it ran fine for a minute or two. Then the Check Engine Light came on.
Too much air flowing into the intake causes the engine to lean out too much air in relation to the fuel and misfire. At an idle, the PCV valve restricts air flow, to reduce this problem. At high manifold vacuum...
Question
Can driving your car in ocean water affect mpg
Hi there: Anytime you drive in salt water, it can cause serious damage to electrical components, suspension components or any seals, gaskets or rubber parts. Even if you wash it off quickly, saltwater can collect on electrical sensors that impact...

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