Auxiliary Air Valve

Asked by Sly666 Jan 13, 2016 at 09:16 PM about the 1986 Toyota Pickup 2 Dr Deluxe 4WD Extended Cab LB

Question type: Maintenance & Repair

Truck not idling. Lousy gas milage.
? Should the hose conecting the Aux.air valve to
the throttle valve have a negative vacume. Pull it
off and it sucks air.

2 Answers
102,585

Reelin68 answered 8 years ago

Check for vacuum leaks. Spray some brake cleaner around the throttle body and the vacuum lines. See if there's any noticeable difference in idle. If so, you have found the leak. You may also have a bad Idle Air Control as well. You may want to replace that. I would also buy some throttle body cleaner and thoroughly tear down and spray the entire throttle body. Excess carbon behind the throttle plate will cause a lot of problems. If the Aux Air Valve is connected to the throttle valve, then I would suspect that it should have a negative vacuum. The throttle is constantly sucking in air and fuel, so it would make sense.

Mark helpful

Your Answer:

Related Questions

  • Auxiliary Air Valve 2 Answers

    Truck not idling. Lousy gas milage. ? Should the hose conecting the Aux.air valve to the throttle valve have a negative vacume. Pull it off and it sucks air.

    1986 Toyota Pickup 2 Dr Deluxe 4WD Extended Cab LB

    -

    Maintenance & Repair

  • SMOG QUESTION FOR TOYOTA '79 TRUCK VALVE ASSY AIR SWITCH 1 Answer

    I'm trying to figure out how these connect for smog check. I circled the pipes to where they should connect. Three options for red, yellow, and white: 1. air/smog pump 2. air intake assy 3. some pipe ...

    1979 Toyota Pickup

    -

    Maintenance & Repair

  • SMOG QUESTION FOR TOYOTA '79 TRUCK VALVE ASSY AIR SWITCH 1 Answer

    I'm trying to figure out how these connect for smog check. I circled the pipes to where they should connect. Three options for red, yellow, and white: 1. air/smog pump 2. air intake assy 3. some pipe ...

    1979 Toyota Pickup

    -

    Maintenance & Repair

  • 93 Toyota pick up 4 cyl 22RE no vacuum signal to egr valve 6 Answers

    How to pass smog? Smog shop says no vacuum signal to egr valve.

    1993 Toyota Pickup 2 Dr STD Standard Cab SB

    -

    Maintenance & Repair

  • 94 toyota pick up air filter?s vibrating?s 2 Answers

    I was checking my air filter and it was sopping wet with also some water in the Air filter compartment. Cleaned/dried air filter compartment, put a new air filter in and then checked it 12 days lat...

    1994 Toyota Pickup 2 Dr DX Standard Cab SB

    -

    Maintenance & Repair

Shortcuts

Search Toyota Pickup Questions

CarGurus Experts

  • #1
    Reelin68
    Reputation
    2,810
  • #2
    wabbo369
    Reputation
    1,350
  • #3
    willwoff
    Reputation
    800
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used Toyota 4Runner
26 Great Deals out of 542 listings starting at $9,999
Used Ford Ranger
24 Great Deals out of 699 listings starting at $8,999
Used Ford F-150
314 Great Deals out of 13,742 listings starting at $3,800
Used Toyota Corolla
135 Great Deals out of 2,300 listings starting at $103
Used Honda Civic
198 Great Deals out of 4,034 listings starting at $440
Used Toyota Land Cruiser
12 listings starting at $71,977
Used Jeep Wrangler
128 Great Deals out of 5,963 listings starting at $6,500

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use. Content will be removed if CarGurus becomes aware that it violates our policies.