Popular questions

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Rough Idle when first started or when wet
Hello, I sounds like you may have a dirty or faulty idle air control valve. As you know, this monitors and reads the air intake as it enters the engine prior to being mixed with fuel while making adjustments to...
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When I come to a complete stop or an incline, the truck idles down and starts to shake really bad.
Hi there. The problem you're describing typically is caused by a restriction in fuel flow, caused either by the idle control valve, ERG valve, or dirty or clogged injectors or throttle body that needs to be cleaned. If the shaking...
Question
Car overheating and not starting
You certainly don't see many Pontiac Torrents around. The 3.4L is a common engine, however, and I know it well. Since it doesn't use a timing belt, I assume you must mean you replaced the serpentine belt. The only way...
Question
2003 Yukon stalls going down hill and at abrupt stops.
Hopefully, the two stalling scenarios have only one cause. Among the possibilities are a faulty torque converter lock up. You might be able to detect that with a sophisticated scan tool, such as the Tech 2. If the level of...
Question
Throttle Position Sensor
You replaced the accelerator pedal and the throttle body itself. The throttle position sensor (TPS) is a sensor that is located on the throttle body used to monitor the throttle position of the throttle plate inside the throttle body in...
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I was driving and then all of a sudden, my oil pressure went down and a loud knocking started.
Hi, thanks for writing in. The only way to verify if the engine is damaged is to do at least a partial inspection of the internals. The oil pan and/or valve covers should be removed to inspect the camshaft sensors,...
Question
Car hesitates or stalls before accelerating. Diagnostics test says: Bank 1 System too lean.
Hi there. Yes, a torn throttle body hose will definitely cause your concerns. Taping the boot is not a proper repair, nor will it correct the situation. The boot has to be replaced. The torn boot is allowing unmetered air...
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My car was overheating won't start after we fix it
Check for diagnostic trouble codes. Overheating has the potential to cause head gasket leaks and valve and piston damage. You should measure cylinder compression to first be sure that the engine is basically mechanically sound. If cylinder compression is normal,...
Question
Service engine soon light
The code P0325 and P1447 may be problems with the evaporative emission charcoal canister and vent solenoid problem from charcoal getting into the solenoid and tripping the code P1447. Some owners also got the code P0325 for the knock sensor...
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Check engine light on error code p0128
If you cleared codes and code P0128 still came back then replace coolant sensor and retest system after clearing codes.
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Tie Rod End Replacement
Hello, It sounds like the rack and pinion may have been damaged during the process of replacing the tie rods. If you are leaking power steering fluid, I would recommend having the rack and pinion checked. It is also very...
Question
Car independently downshifts on startup
There seems to be a problem inside the transmission and the code that has turned on the Check Engine Light may point to it. Other vehicles having similar symptoms have had faulty torque converter clutch solenoids or line pressure solenoids....
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How do I use the navigation system?
If your vehicle is equipped with a navigation system, it will help you find directions where you need to go. Your navigation will appear on the center display. To use the navigation system. Type in the address you need...
Question
nissan xterra anti theft issue
Hi there. In some case, when a professional mechanic is not able to connect an OBD-II diagnostic scanner to the ECU, it's an indication of a blown fuse or electrical relay. In other instances, it's due to the ECU being...
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Accelerating on park
Hi Blendy. Thanks for contacting us tonight. When you have an issue where the RPM increases when it's in park it's typically due to a vacuum leak or a problem with the idle control valve. It could also be due...
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My 95 Honda Civic is only running on 3 cylinders.
Any time you have a misfiring cylinder the easiest thing to do is to replace the spark plugs and check the plug wires to see if valve cover leaks oil onto plug wires in spark plug holes. If it does...
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My car is hard to start up and gives code P0335
Hi there: The crankshaft position sensor on a six-cylinder Jeep Wrangler is going to be located behind the front motor plate, next to the timing chain/belt. Sometimes, however, the P0335 OBD-II error code is not indicating the crank position sensor...
Question
Morse code beeps coming from Nissan Quest 2005
Hello. An electronic chime from your vehicle may signify that the computer has detected low pressure at one of the vehicle's tires. Your vehicle is equipped with a tire pressure monitoring (TPMS) system that will notify you if one or...
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When i rev the engine hard, it loses power.
This sounds like you are having low fuel pressure or fuel volume getting to the engine. You will need to have the computer scanned for codes and the fuel pressure checked and while accelerating see if the fuel pressure drops...
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I accidentally put diesel in my car and I want to know that it'll be salvageable
The fuel tank will have to be thoroughly drained and refilled with fresh gas. The Mechanic would possible try to purge the fuel rail once fresh gas is in the tank, however, it is possible that the remaining diesel fuel...
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Why when I install a starter in truck it makes a lot of noise an then have to replace starter again the gears are grinded down
You may need to install a spacer to prevent the flywheel from touching the starter gear when the vehicle is running. This could be cause of both the noise and the worn down gears. If you need help with this...
Question
Ignition switch will not turn on.
Hello and thank you for your question. For this, you will need to disconnect you battery and remove the steering wheel and airbag assembly. In the steering column, you will see where the ignition switch is located and you will...
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Misfire and low oil pressure
The oil light comes on when the oil pressure drops below a certain level: usually about 8 psi. Since the oil pressure will depend to some degree on how fast the oil pump is turning, you are probably seeing it...
Question
Protection mode is blamed for engine shutting down
Hello there, thank you for asking about your 1991 Buick Reatta. What the previous owner is saying could be correct. Resistor sensing contacts are located in the ignition key lock cylinder of your vehicle. When the key is inserted, these...
Question
Cost to change old fuse 2008 Mazda 3
Fuse replacement averages $72 to $91 but you can get an exact quote if you click on "Get a Quote" at YourMechanic's fuse replacement service page. Fuses are located in a variety of spots in the car including in an...