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Check Engine Light Tips

1. The Check Engine light tells you the computer found a problem with your vehicle's running condition.

2. If the vehicle is driving OK, a Check Engine light is not a reason to pull over. But get the problem fixed soon.

3. In testing areas, you will fail your emissions test if the Check Engine light is on.

4. Fuel economy generally suffers when the Check Engine light is on.

5. An extended warranty covers emissions-related components that can trigger the Check Engine light. More information is at: epa.gov/obd/warranties.htm.

6. When the Check Engine light is on, one or more "trouble code(s)" are stored in the computer.

7. You can read and erase trouble codes using inexpensive code-reader tools from auto-parts stores; the tools are very easy to use.

8. The problems identified by the codes are frequently easy to fix (such as a loose gas cap), but some are complex, requiring professional diagnosis.

9. A trouble code indicates a circuit where the problem was identified, not necessarily the component itself. Diagnosis is often necessary.

10. The Haynes OBD-II Techbook (Book #10206) is your source for late-model code information. If you have a 1995 or earlier model, get Book #10205. Both books can be found in the Techbook section of this site.

 

 
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Automotive Repair Manuals
 
Mazda 626 Haynes Repair Manual covering 626 Sedan & Sport Coupe rear-wheel drive models (1979 thru 1982)
61040
Mazda 626 Haynes Repair Manual covering 626 Sedan & Sport Coupe rear-wheel drive models (1979 thru 1982)

Our Price: $24.95


Haynes Repair Manual for the Mazda 626 covering 626 Sedan & Sport Coupe rear-wheel drive models (1979 thru 1982) has clear instructions and hundreds of photographs to help you perform anything from simple maintenance to basic repairs. Whether you're a beginner or a pro, you can save big with Haynes!


Complete coverage for your Mazda 626 covering 626 Sedan & Sport Coupe rear-wheel drive models (1979 thru 1982):

--Routine Maintenance
--Tune-up procedures
--Engine repair
--Cooling and heating
--Air Conditioning
--Fuel and exhaust
--Emissions control
--Ignition
--Brakes
--Suspension and steering
--Electrical systems
--Wiring diagrams


Mazda 626 Haynes Repair Manual covering 626 Sedan & Sport Coupe rear-wheel drive models (1979 thru 1982)


Mazda 626 & MX-6 Haynes Repair Manual Covering Mazda 626 & MX-6 front-wheel drive models (1983 thru 1992)
61041
Mazda 626 & MX-6 Haynes Repair Manual Covering Mazda 626 & MX-6 front-wheel drive models (1983 thru 1992)

Our Price: $24.95


Haynes Repair Manual for the Mazda 626 & MX-6 covering Mazda 626 & MX-6 front-wheel drive models (1983 thru 1992)has clear instructions and hundreds of photographs to help you perform anything from simple maintenance to basic repairs. Whether you're a beginner or a pro, you can save big with Haynes!


Complete coverage for your Mazda 626 & MX-6 covering Mazda 626 & MX-6 front-wheel drive models (1983 thru 1992):

--Routine Maintenance
--Tune-up procedures
--Engine repair
--Cooling and heating
--Air Conditioning
--Fuel and exhaust
--Emissions control
--Ignition
--Brakes
--Suspension and steering
--Electrical systems
--Wiring diagrams


Mazda 626 & MX-6 Haynes Repair Manual Covering Mazda 626 & MX-6 front-wheel drive models (1983 thru 1992)


Mazda 626, MX-6 & Ford Probe Haynes Repair Manual covering  Mazda 626 (1993 thru 2001), Mazda MX-6 & Ford Probe (1993 thru 1997)
61042
Mazda 626, MX-6 & Ford Probe Haynes Repair Manual covering Mazda 626 (1993 thru 2001), Mazda MX-6 & Ford Probe (1993 thru 1997)

Our Price: $24.95


Haynes Repair Manual for the Mazda 626, MX-6 & Ford Probe covering Mazda 626 (1993 thru 2001), Mazda MX-6 & Ford Probe (1993 thru 1997) has clear instructions and hundreds of photographs to help you perform anything from simple maintenance to basic repairs. Whether you're a beginner or a pro, you can save big with Haynes!


Complete coverage for your Mazda 626, MX-6 & Ford Probe covering Mazda 626 (1993 thru 2001), Mazda MX-6 & Ford Probe (1993 thru 1997):

--Routine Maintenance
--Tune-up procedures
--Engine repair
--Cooling and heating
--Air Conditioning
--Fuel and exhaust
--Emissions control
--Ignition
--Brakes
--Suspension and steering
--Electrical systems
--Wiring diagrams


Mazda 626, MX-6 & Ford Probe Haynes Repair Manual covering  Mazda 626 (1993 thru 2001), Mazda MX-6 & Ford Probe (1993 thru 1997)


Mercedes-Benz Diesel 123 Series Haynes Repair Manual covering all 200D, 220D, 240D, 240TD, 300D, 300CD, 300TD models, designated W123 Series 4-cyl & 5-cyl including turbo-diesel (1976 thru 1985)
63012
Mercedes-Benz Diesel 123 Series Haynes Repair Manual covering all 200D, 220D, 240D, 240TD, 300D, 300CD, 300TD models, designated W123 Series 4-cyl & 5-cyl including turbo-diesel (1976 thru 1985)

Our Price: $24.95


Haynes Repair Manual for the Mercedes-Benz Diesel 123 Series covering all 200D 220D, 240D, 240TD, 300D, 300CD, 300TD models, designated W123 Series 4-cyl & 5-cyl including turbo-diesel (1976 thru 1985) has clear instructions and hundreds of photographs to help you perform anything from simple maintenance to basic repairs. Whether you're a beginner or a pro, you can save big with Haynes!


Complete coverage for your Mercedes-Benz Diesel 123 Series covering all 200D 220D, 240D, 240TD, 300D, 300CD, 300TD models, designated W123 Series 4-cyl & 5-cyl including turbo-diesel (1976 thru 1985):

--Routine Maintenance
--Tune-up procedures
--Engine repair
--Cooling and heating
--Air Conditioning
--Fuel and exhaust
--Emissions control
--Ignition
--Brakes
--Suspension and steering
--Electrical systems
--Wiring diagrams


Mercedes-Benz Diesel 123 Series Haynes Repair Manual covering all 200D, 220D, 240D, 240TD, 300D, 300CD, 300TD models, designated W123 Series 4-cyl & 5-cyl including turbo-diesel (1976 thru 1985)


Mercedes-Benz 190 Haynes Repair Manual covering 190 models with 4-cylinder gasoline engine (1984 thru 1988)
63015
Mercedes-Benz 190 Haynes Repair Manual covering 190 models with 4-cylinder gasoline engine (1984 thru 1988)

Our Price: $24.95


Haynes Repair Manual for the Mercedes-Benz 190 covering 190 models with 4-cylinder gasoline engine (1984 thru 1988) has clear instructions and hundreds of photographs to help you perform anything from simple maintenance to basic repairs. Whether you're a beginner or a pro, you can save big with Haynes!


Complete coverage for your Mercedes-Benz 190 covering 190 models with 4-cylinder gasoline engine (1984 thru 1988):

--Routine Maintenance
--Tune-up procedures
--Engine repair
--Cooling and heating
--Air Conditioning
--Fuel and exhaust
--Emissions control
--Ignition
--Brakes
--Suspension and steering
--Electrical systems
--Wiring diagrams


Mercedes-Benz 190 Haynes Repair Manual covering 190 models with 4-cylinder gasoline engine (1984 thru 1988)


 
Automotive Repair Manuals
 
Mercedes-Benz 230, 250 & 280 Haynes Repair Manual covering all 230, 250 & 280 models with 6-cylinder engine (1968 thru 1972)
63020
Mercedes-Benz 230, 250 & 280 Haynes Repair Manual covering all 230, 250 & 280 models with 6-cylinder engine (1968 thru 1972)

Our Price: $24.95


Haynes Repair Manual for the Mercedes-Benz 230, 250 & 280 covering all 230, 250 & 280 models with 6-cylinder engine (1968 thru 1972) has clear instructions and hundreds of photographs to help you perform anything from simple maintenance to basic repairs. Whether you're a beginner or a pro, you can save big with Haynes!


Complete coverage for your Mercedes-Benz 230, 250 & 280 covering all 230, 250 & 280 models with 6-cylinder engine (1968 thru 1972):

--Routine Maintenance
--Tune-up procedures
--Engine repair
--Cooling and heating
--Air Conditioning
--Fuel and exhaust
--Emissions control
--Ignition
--Brakes
--Suspension and steering
--Electrical systems
--Wiring diagrams


Mercedes-Benz 230, 250 & 280 Haynes Repair Manual covering all 230, 250 & 280 models with 6-cylinder engine (1968 thru 1972)


Mercedes-Benz 280 123 Series Haynes Repair Manual covering 280 123 Series 6-cylinder gasoline engine (1977 thru 1981)
63025
Mercedes-Benz 280 123 Series Haynes Repair Manual covering 280 123 Series 6-cylinder gasoline engine (1977 thru 1981)

Our Price: $24.95


Haynes Repair Manual for the Mercedes-Benz 280 123 Series covering 280 123 Series 6-cylinder gasoline engine (1977 thru 1981) has clear instructions and hundreds of photographs to help you perform anything from simple maintenance to basic repairs. Whether you're a beginner or a pro, you can save big with Haynes!


Complete coverage for your Mercedes-Benz 280 123 Series covering 280 123 Series 6-cylinder gasoline engine (1977 thru 1981):

--Routine Maintenance
--Tune-up procedures
--Engine repair
--Cooling and heating
--Air Conditioning
--Fuel and exhaust
--Emissions control
--Ignition
--Brakes
--Suspension and steering
--Electrical systems
--Wiring diagrams


Mercedes-Benz 280 123 Series Haynes Repair Manual covering 280 123 Series 6-cylinder gasoline engine (1977 thru 1981)


Mercedes-Benz 350 & 450 Haynes Repair Manual covering 350 SL Roadster, 450 SL/SLC Coupe & Roadster, 450 SE/SEL V8 Sedan (1971 thru 1980)
63030
Mercedes-Benz 350 & 450 Haynes Repair Manual covering 350 SL Roadster, 450 SL/SLC Coupe & Roadster, 450 SE/SEL V8 Sedan (1971 thru 1980)

Our Price: $24.95


Haynes Repair Manual for the Mercedes-Benz 350 & 450 covering 350 SL Roadster, 450 SL/SLC Coupe & Roadster, 450 SE/SEL V8 Sedan (1971 thru 1980) has clear instructions and hundreds of photographs to help you perform anything from simple maintenance to basic repairs. Whether you're a beginner or a pro, you can save big with Haynes!


Complete coverage for your Mercedes-Benz 350 & 450 covering 350 SL Roadster, 450 SL/SLC Coupe & Roadster, 450 SE/SEL V8 Sedan (1971 thru 1980):

--Routine Maintenance
--Tune-up procedures
--Engine repair
--Cooling and heating
--Air Conditioning
--Fuel and exhaust
--Emissions control
--Ignition
--Brakes
--Suspension and steering
--Electrical systems
--Wiring diagrams


Mercedes-Benz 350 & 450 Haynes Repair Manual covering 350 SL Roadster, 450 SL/SLC Coupe & Roadster, 450 SE/SEL V8 Sedan (1971 thru 1980)


Mercedes-Benz C-Class Haynes Repair Manual for 2001 through 2007 (excludes AMG models)
63040
Mercedes-Benz C-Class Haynes Repair Manual for 2001 through 2007 (excludes AMG models)

Our Price: $24.95


Haynes Repair Manual for the Mercedes-Benz C-Class for 2001 thru 2007 has clear instructions and hundreds of photographs to help you perform anything from simple maintenance to basic repairs. Whether you're a beginner or a pro, you can save big with Haynes!


Complete coverage for your Mercedes-Benz C-Class for 2001 thru 2007:
--Routine Maintenance
--Tune-up procedures
--Engine repair
--Cooling and heating
--Air Conditioning
--Fuel and exhaust
--Emissions control
--Ignition
--Brakes
--Suspension and steering
--Electrical systems
--Wiring diagrams


Mercedes-Benz C-Class Haynes Repair Manual for 2001 through 2007 (excludes AMG models)


Mercury Villager & Nissan Quest Haynes Repair Manual  for 1993 thru 2001 covering all models
64200
Mercury Villager & Nissan Quest Haynes Repair Manual for 1993 thru 2001 covering all models

Our Price: $24.95


Haynes Repair Manual for the Mercury Villager & Nissan Quest for 1993 thru 2001 covering all models has clear instructions and hundreds of photographs to help you perform anything from simple maintenance to basic repairs. Whether you're a beginner or a pro, you can save big with Haynes!


Complete coverage for your Mercury Villager & Nissan Quest for 1993 thru 2001 covering all model:

--Routine Maintenance
--Tune-up procedures
--Engine repair
--Cooling and heating
--Air Conditioning
--Fuel and exhaust
--Emissions control
--Ignition
--Brakes
--Suspension and steering
--Electrical systems
--Wiring diagrams


Mercury Villager & Nissan Quest Haynes Repair Manual  for 1993 thru 2001 covering all models




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