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Cleaning 1985-1988 Volvo 740 Throttle Body

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  1. Cleaning 1985-1988 Volvo 740 Throttle Body, 1985-1988 Volvo 740 Preparing Car For Work: step 1, image 1 of 2 Cleaning 1985-1988 Volvo 740 Throttle Body, 1985-1988 Volvo 740 Preparing Car For Work: step 1, image 2 of 2
    • Firstly Disconnect battery

    • Always take the negative terminal off first.

    • '''General Tip After disconnecting the battery leave the car for about 10 mins , This lets any residual energy left in the electrical system to dissapate. It is good practise whatever the job

  2. Cleaning 1985-1988 Volvo 740 Throttle Body, Removing Throttle Body: step 2, image 1 of 1
    • Locate throttle body on right side of engine, it is between the intake tube and intake manifold.

  3. Cleaning 1985-1988 Volvo 740 Throttle Body: step 3, image 1 of 1
    • Locate throttle linkage cable assembly.

  4. Cleaning 1985-1988 Volvo 740 Throttle Body: step 4, image 1 of 2 Cleaning 1985-1988 Volvo 740 Throttle Body: step 4, image 2 of 2
    • Twist the assembly clockwise.

  5. Cleaning 1985-1988 Volvo 740 Throttle Body: step 5, image 1 of 1
    • Slide both slackened cables off assembly’s guides.

  6. Cleaning 1985-1988 Volvo 740 Throttle Body: step 6, image 1 of 2 Cleaning 1985-1988 Volvo 740 Throttle Body: step 6, image 2 of 2
    • Locate the two hoses on the top of the throttle body.

    • Gently lift the hoses off.

  7. Cleaning 1985-1988 Volvo 740 Throttle Body: step 7, image 1 of 1
    • Use a flat head screwdriver to loosen the hose clamp attaching the intake tube to the throttle body.

  8. Cleaning 1985-1988 Volvo 740 Throttle Body: step 8, image 1 of 1
    • Remove the intake tube from the throttle body.

  9. Cleaning 1985-1988 Volvo 740 Throttle Body: step 9, image 1 of 1
    • Locate wiring clip on the underside of the throttle body.

  10. Cleaning 1985-1988 Volvo 740 Throttle Body: step 10, image 1 of 2 Cleaning 1985-1988 Volvo 740 Throttle Body: step 10, image 2 of 2
    • Press down on the locking mechanism before gently removing the wiring clip.

  11. Cleaning 1985-1988 Volvo 740 Throttle Body: step 11, image 1 of 3 Cleaning 1985-1988 Volvo 740 Throttle Body: step 11, image 2 of 3 Cleaning 1985-1988 Volvo 740 Throttle Body: step 11, image 3 of 3
    • Locate throttle linkage arm.

    • Open the locking clip with a flat head screwdriver.

    • Pry off the linkage arm with a flat head screwdriver.

  12. Cleaning 1985-1988 Volvo 740 Throttle Body: step 12, image 1 of 3 Cleaning 1985-1988 Volvo 740 Throttle Body: step 12, image 2 of 3 Cleaning 1985-1988 Volvo 740 Throttle Body: step 12, image 3 of 3
    • Locate the three 13mm nuts attaching the throttle body to the intake manifold.

    • Remove nuts with a 13mm crescent wrench.

  13. Cleaning 1985-1988 Volvo 740 Throttle Body: step 13, image 1 of 1
    • Lift the throttle body off of the intake manifold.

    • The manifold is now out of the engine bay and ready for cleaning or adjustment.

  14. Cleaning 1985-1988 Volvo 740 Throttle Body, Cleaning 1985-1988 Volvo 740 Throttle Body: step 14, image 1 of 2 Cleaning 1985-1988 Volvo 740 Throttle Body, Cleaning 1985-1988 Volvo 740 Throttle Body: step 14, image 2 of 2
    • Cover the electrical contacts with a shop towel to prevent throttle body cleaner from inadvertently spilling over.

  15. Cleaning 1985-1988 Volvo 740 Throttle Body: step 15, image 1 of 1
    • Liberally apply throttle body cleaner to the inside of throttle body and butterfly valve.

    • Use a shop towel sprayed with cleaner to wipe off thick grime if severely dirtied.

  16. Cleaning 1985-1988 Volvo 740 Throttle Body: step 16, image 1 of 2 Cleaning 1985-1988 Volvo 740 Throttle Body: step 16, image 2 of 2
    • Spray electrical cleaner on the metal contacts to blast away particles in the bracket.

    • Spray off the wiring clip that attaches to the throttle body inside the engine bay.

  17. Cleaning 1985-1988 Volvo 740 Throttle Body: step 17, image 1 of 1
    • Apply a small amount of dielectric grease to the metal contacts to prevent corrosion.

Conclusion

To reinstall the throttle body after cleaning follow reverse directions for prerequisite guide #2

One other person completed this guide.

Raymond

Member since: 10/11/10

76 Reputation

2 Guides authored

Team

Cal Poly, Team 3-28, Regan Fall 2010 Member of Cal Poly, Team 3-28, Regan Fall 2010

CPSU-REGAN-F10S3G28

4 Members

9 Guides authored

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