Tag Archives: Sensor

Car repair sensor problems. Is your check engine light, ABS or any other warning on the dash? Find answers to help repair your car or truck yourself.


2006 Chevy Silverado ABS Brakes Vibrating At Slow Speeds

Hello I have a 2006 Chevy Silverado 4X4 crew cab, having ABS problems, first once the ABS where coming on when I was braking. Just normal at a stop sign. It felt like air in the system, ABS light light would come on then later shut off, But brake felt spongy ? ProTech: The pedal will feel ‘spongy’ during an ABS activation, as it pulsates…

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2005 Chevy Trailblazer Runs Rough at Idle With No Compression

#1 cylinder in my 2005 Trailblazer has no compression. I applied air pressure and it sounded like the exhaust for no air came out f the throttle body. There was air coming out of my # 5 cylinder with the #1 at TDC. wanted your opinion on if you think it is an exhaust valve not seating? ProTech Yes, I would think that is your…

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2002 Pontiac Grand Am Hard Starting When Hot

I have a 2002 Pontiac Grand Am with a 3.4 liter v6. When the car is cold it will start fairly quickly but when it reaches operating temp or sits in warm sun or high ambient temps it will turn over like mad but will not start. Protech : A check of the fuel pressure when hot would be a good thing to look at…

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Which Catalytic Converter is Bad on My Ford F-150

2004 Ford F-150 Lariat 4×4 exhaust pipe exiting resonator on driver side warm. exhaust pipe on passenger side exiting resonator hot which catalytic converter is bad? and can you clean out the carbon? ProTech: How much of a heat difference is there? There is a significant amount of difference. drove truck for about 30 min. and was able to hold hand on exhaust pipe driver…

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2003 Buick Century ABS and Low Trac Lights On Dash

I have a 2003 Buick Century and there are several warning lights that come on at different times when I am driving. the low track light, the abs light, and etc. These lights are all yellow-orange in color not red. I have checked the car several times myself and have had it checked by mechanics also. When we put a diagnostic computer on it there…

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1999 Silverado Security Light and Won’t Start

I have a Chevy Silverado 1999 turns over but no fuel and no spark changed fuel pump cam sensor Crankshaft sensor still nothing some one told me I need to have my key reprogrammed. ProTech: Is the security light on? Yes. Then that is your issue. The theft deterrent system will kill the fuel enable signal so the truck won’t start. Your Silverado does not…

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Reduced Engine Power Warning And Check Engine Light

The reduced engine power warning message can come on your car or truck. Today’s vehicles are for the most part completely electronically controlled. From every button and switch on the dash down to the ‘fly-by-wire’ throttle control system. Back in the day, before these electronically controlled throttles, everything was cable actuated. You press the gas pedal, and a cable opens the carburetor or throttle body.…

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How To Replace Buick Park Avenue Belts

I have a 1996 Buick Park Avenue Ultra that needs both serpentine and super charger belts replaced my questions is, it appears that i have to remove the motor mount or bracket in order to do this, Ive never seen this before or am i just not seeing it clear. thanks for your help, Paul Protech: Yes, that is correct. You have to remove the…

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2003 Chevy Venture 5 Volt Reference Codes

I am getting code P1639 on my Chevy Venture van 2003. This is supposed to indicate a low 5 volt reference at the AC pressure sensor and the fuel tank pressure sensor. I have measured the voltage going to both sensors and get 5 volts. This is a gray wire in both cases. The AC has been working fine and I have no other codes.…

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Chevrolet Equinox Brakes Vibrate And Warning Lights

Live Chat: I’m having the same problem as far as the ABS and Traction control light coming on. I have a 2005 Chevy Equinox and when ever I start the truck and go to pull off the brakes starts to vibrate and is hard to stop until the ABS and Traction control light comes on and then your able to brake with no problem but…

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1999 Chevy Malibu Low Coolant Light Flickering

I had just put in a brand new radiator on my 1999 Malibu, and the coolant low light will not turn off, the coolant should be full up, but the light doesn’t turn off and the car stays at a even temperature just a hair above the mid point. Mechanic JK: OK. I think i know what the problem is. First, are you sure the…

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How To Reset Pontiac Grand Am Security Light

I have a 2004 Pontiac grand am and my security light stays on how can i turn it off it does not have a reset button. ProTech: You cannot just turn it off unless the problem is fixed. The security light is on because you have a problem with your Passlock theft system. There are temporary fixes, like doing a re-learn of the theft deterrent,…

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2004 Chevrolet Suburban Service Stability Light

Wondering if you knew what the code co455 for a 2004 Suburban. Protech: That code is for the steering wheel position sensor. Usually those need replacement when this code occurs, as the module cannot exactly see what position the steering wheel is in at a certain time while driving. All that is tied together with the steering wheel ? Yes, that code is part of…

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Buick Lesabre Stalls Out And Check Engine Light

1995 Buick Lesabre-check engine light would come on; car would die in traffic; and car would buck or lung while in drive. a complete tune up of replacement wires and plugs were done.Crank sensor and computer was changed 2 weeks ago. This past weekend the car returned to same problems and computer was burned up. Had to be replaced today. i feel it laboring while…

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