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Bryce Randolph Posted on Jan 19, 2014
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Vacuum diagram From the air cleaner to the throttle body is the rubber sleeve that connects the two. On the top of the sleeve is a 1/2 in. hole. Where and how does the plastic tube go?

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Stephen

Stephen

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  • Chevrolet Master 21,873 Answers
  • Posted on Jan 19, 2014
Stephen
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Are you talking about the tube from the air filter hose to the valve cover ?

5 Related Answers

old fart58

  • 163 Answers
  • Posted on Jun 26, 2009

SOURCE: 1991 S10 2.5L throttle body idles to fast

A vehicle that old will suffer from brittle and cracked vacuum lines. I would say there is a bad, or several bad lines leaking away vacuum from the intake manifold. Don't forget to check the hose going to the PCV on the valve cover. A vacuum leak will also cause the engine to stumble and miss intermittently when idling.

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Anonymous

  • 543 Answers
  • Posted on Oct 10, 2009

SOURCE: Code 171 Bank 1 too lean

well actually you cant clean the mass air flow,you usually ruin it when you clean it,it could be a bad maf or just crapy gas,not crappy enuff that the car doesnt run,but enuff it doesnt like the air/fuel mixture and is setting the light

toneman2121

toneman2121

  • 775 Answers
  • Posted on Mar 02, 2010

SOURCE: throttle body vacuum hose diagram

there should be one on the uderside of the hood oron the front rail as you open the hood

Anonymous

  • 326 Answers
  • Posted on Apr 11, 2010

SOURCE: 1998 Monte Carlo (Z34) stalls when braking/RPMs rise then drop

ON THE SIDE OF THROTTLE BODY IS THE IDLE AIR CONTROL MOTOR GENERALLY HELD IN PLACE WITH TWO TORK SCREWS REMOVE SCREWS AND SLIDE OUT OF THROTTLE BODY THERE IS A PLUNGER ON END OF IAC MOTOR CLEAN IT GOOD AND THE SEAT UP IN THE THROTTLE BODY AND RE-INSTALL THIS MAY HELP TO ALLEVIATE SOME OF THE FLUCUATION IN RPM,S CLEANING CAN BE DONE WITH CARB SPRAY AND A OLD TOOTHBRUSH

Testimonial: "The info on my idle speed control was correct, it was broke beyond repair. Replacing it fixed it for a whole 20 minutes. After that I changed the EGR Valve and the Mass Air Flow Senser. Everything runs fine now -no stalling."

steve_e_uk

steve morris

  • 1675 Answers
  • Posted on Jan 14, 2011

SOURCE: need a vacuum hose diagram

hi you haven't given much information on what you require, on what vacuum system you require and is it for a v8? v6? straight 4? but i have put on here a link to all the vacuum diagrams for these and more hope this helps please rate and comment thanks
http://www.compnine.com/index.php?t=1&year=1988&majorgroup=03&supplgroup=NULL&catcode=52C&modelcode=C&makecode=LC&grouptype=B&modelid=6549&uid=1

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Related Questions:

0helpful
2answers

In cold weather thecar starts`ok but the rpms go to 2000 and slowly returns to around 1200 and stays there
idle air control valve is suppose to let the rpms go high to warm the motor to normal temp,and then drop it to 1200 rpms
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Jan 07, 2013 • 2000 Saturn SL
3helpful
1answer

I need a vacuum line diagram fo a 1996 Chevy Lumina, 3.1. One line that is not connected to anything, is located at the top of the engine.
Sorry I don't have the diagram, but I do have a diagram of the engine and component locations. Your vacuum system is fairly simple. You have a MAP sensor attached to the air cleaner. I have pasted a picture below. It has one electrical connector and one vacuum hose that goes to the intake manifold or the throttle body.
Behind the right headlight is your evap canister. This will have a hose or line running to the fuel tank. Then it will have another hose going to the purge valve. The purge valve should be close by and it has a connector plus another hose that goes to the intake manifold.
Then you have the PCV hose that goes from the PCV valve in the valve cover to the air cleaner or intake manifold. I think yours just has a hose from the air cleaner and the rest is internal.
There is one more vacuum hose, and that is the bog one that goes from the intake manifold (or throttle body--looks to me like there are a couple of vacuum ports on the back side of the throttle body, and there may be a "T" on one of the hoses) to the brake booster. It this one was off, the engine would not run, as the vacuum draw is large. Please let me know if you cannot figure it out from these instructions and provide a picture, if you can.

MAP sensor:
jturcotte_653.jpg

purge valve:
jturcotte_654.jpg

jturcotte_2455.gif
jturcotte_2456.gif
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Oct 30, 2011 • 1996 Chevrolet Lumina Mini
0helpful
1answer

I have a 1987 s10. I need to figure out where the three vacuum line coming out of the transmission are supose to go. I bought the truck with just the vacuum lines hanging from underneith the truck.My 4...
The three lines hanging under the truck connect to a valve on top of the 4x4 transfer case, this is why the 4wd does not work. As for the throttle body lines there should be a diagram on the radiator support that explains that. You should have one large line that goes to the PCV valve, a small line going to the air cleaner, a small line connected to the MAP sensor and possibly another connected to a valve that controls the EGR valve. Your fifth line should connect to a port on the manifold that supplies vacuum to a tank that is the vacuum source for the HVAC control doors and the front axle engagement system. The axle engagement system is what the line hanging by the transmission under the truck is for.
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Jun 03, 2017 • 1987 Chevrolet S-10 Pickup
1helpful
2answers

How do i clean the throttle body on a 2006 montana sv6? and where is it. thanks
the throttle body is where the black round air recieving hose that goes to the throttle body which is on top of the engine, it normally has 2 medium size metal bands, 1 on each end, that tightened up or loosen. " in order to get to the throttle body, loosen the bands with a screwdriver, then remove the hose,then , you can clean the throttle body, with a throttle body spray cleaner, that you can purchase at a auto parts store.
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Jun 24, 2011 • 2006 Pontiac Montana SV6
1helpful
1answer

When i turn on heater or fan engine revs over 3000 rpm
Idle Air Control Valve Pintle may be bad If you disconnect the IAC and the problem ceases it can point to this being the problem.: Removal & Installation 3.5L Engine To Remove:
  1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
  2. Remove the fuel injector sight shield.
  3. Drain the cooling system.
  4. Remove or disconnect the following:
    • The air cleaner intake duct. Figure of IAC and TPS electrical connectors disconnected. aurora_g1.gif

    • The idle air control (IAC) valve and throttle position (TP) sensor electrical connectors. Figure of cruise control and throttle control cables removed from throttle lever. aurora_g2.gif

    • The cruise control cable and throttle control cable from the throttle body lever.
    • The fuel pressure regulator vacuum hose, positive crankcase ventilation (PCV) hose and the throttle body vacuum port hose.
    • The throttle body coolant hoses.
    • The throttle control cable bracket, leaving the throttle and cruise cables connected.
    • The upper nut holding the throttle body to the intake manifold.
    • The throttle body assembly.
  5. Clean the gasket mating surfaces.
To Install:
  1. Install a new gasket and new studs if necessary.
  2. Install or connect the following:
    • The throttle body assembly.
    • Start the top nut by hand.
    • The throttle body coolant hoses.
    • Position the throttle control cable bracket and hand start the retaining nuts and bolt.
    • Torque the three throttle body retaining nuts to 89 in.lbs. (10 Nm). And the bracket retaining bolt to 115 in.lbs. (13 Nm).
    • The throttle body vacuum port hose, PCV valve hose and the fuel pressure regulator hose.
    • The throttle control and cruise control cables to the throttle body lever.
    • The IAC valve and TP sensor electrical connectors.
    • The air intake duct.
  3. Refill the cooling system.
  4. Install the fuel injector sight shield.
4.0L Engine To Remove:
  1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
  2. Relieve the fuel system pressure.
  3. Remove or disconnect the following:
    • Negative battery cable.
    • The Mass Air Flow (MAF) sensor electrical connector.
    • The air cleaner intake duct.
    • The PCV valve fresh air tube. Figure of cruise control cable removed from throttle cable bracket. aurora_g3.gif

    • The cruise control cable and throttle control cable from the bracket.
    • The cruise control cable and throttle control cable from throttle body lever. Figure of IAC valve and TPS connectors removed. aurora_g4.gif

    • The idle air control (IAC) valve and throttle position (TP) sensor electrical connectors. Figure of fuel lines removed from retainer on throttle cable bracket. aurora_g5.gif

    • The fuel feed and return lines from the retainer on the throttle control cable bracket.
    • The transaxle shift cable clip from the throttle control cable bracket. Figure of throttle body removed from water crossover. aurora_g6.gif

    • The throttle body from the water crossover.
To Install:
NOTE: The Mass Air Flow (MAF) sensor inlet and the outlet of the air cleaner assembly must line up when installed. Misalignment may cause MIL illumination or driveability concerns.
  1. Install or connect the following.
    • The throttle body to the water crossover. Torque the bolts to 106 in.lbs. (12 Nm).
    • The IAC valve and TP sensor electrical connectors.
    • The throttle and cruise control cables to the throttle body lever.
    • The throttle and cruise control cables to the throttle control cable bracket. The transaxle shift cable clip to the throttle control cable bracket.
    • The fuel feed and return line retainer to the throttle control cable bracket.
    • The MAF sensor electrical connector.
    • The air cleaner intake duct clamp. Torque the clamp to 27 in.lbs. (3Nm).
    • The PCV valve fresh air tube.
    • The fuel injector sight shield. Torque the nuts to 20 in.lbs. (2.3 Nm).
  2. Install the negative battery cable.
  3. Pressurize the fuel system and verify no leaks.
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Oct 07, 2010 • 2001 Oldsmobile Alero
0helpful
1answer

Vacum line to hvac where does it conect to engine
Hello Mr. Wilkins.
It hooks up to the throttle body and can be difficult to find.
Looking into the engine compartment from the front, look to the left of the air intake near the throttle body at the top center of the engine. You may need to take off the air cleaner assembly to allow better access.
Have a good flashlight handy as that may make it easier to locate.
I use some rubber vacuum line to reconnect the heat-broken plastic line.

KL
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Apr 22, 2010 • 2003 GMC Safari
0helpful
1answer

Engine diagram 96 vw passat vr6
PCV valves aren't common on European cars, instead they regulate vacuum flow by connecting a small diameter hose to a very small hole in the intake manifold or throttle body.

The other end of the hose is typically connected to the top of the engine at the oil mist and flame trap which is usually inside one of the cam covers. The main engine crankcase breather hose typically also connects there and sometimes is connected to the air cleaner side of the air intake and sometimes directly to the air filter housing.

The small hole generally needs checking during maintenance as they frequently become blocked. The hole is something like 5/64 inch but mostly it is beneficial to enlarge it just a little, say to 3/32.

Sorry can't advise you about the diaphragm valve...
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Dec 16, 2017 • 1996 Volkswagen Passat
0helpful
1answer

1999 Transport constantly stalls immediately after starting on several occasions, I suspect a air flow or vacuum issue
Replace the fuel filter and try cleaning out the idle air control valve (IAC). The IAC is located in the throttle body and can be cleaned by spraying throttle body cleaner through the throttle body and in through the IAC passage way in the throttle body. The IAC is know to get stuck with carbon build up causing the stalling of the engine and also check to make sure any electrical connections at the throttle body like the one to the IAC is not damaged at all due to corrosion. Good luck and make sure you use throttle body cleaner, carn cleaner is to corrosive to the gaskets used on throttle body's.
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Oct 30, 2009 • 1999 Pontiac Montana
1helpful
3answers

Vauxhall vectra keeps cutting out when slowing down
idle valve or posibly your oxygen sensor you need to get it plugged in on a diagnostics ( only around £30-£40) and it will give you the exacy fault
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Aug 27, 2009 • 2003 Volvo XC90
0helpful
1answer

Rough idle blazer 2000
change air filter.clean throttle plates.remove throttle body remove all electrical parts also all plastics and rubber parts.clean throttle body with gum out throttle body cleaner.dry off throttle body.replace gasket.scan it to check to see if egr valve leaking.also check all vacuum hoses.and pvc valve.
Read full answer
Jul 19, 2009 • 2000 Chevrolet Blazer
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