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12ht into 75series, cut off solenoid not getting constant vaccum supply for the vac pump and does not shut the butterfly when the car is warm?

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Why does the gas pump cut off every 1/2 to 1 gallon on my 2003 Hyundai Accent, at slow pump even when the tank is nearly empty. It doesn't matter what station I go to.

Failure in the Evap System

Check for Evap Codes & diagnose that system

Most likely a failed evap vent solenoid

Google : OBD PO446 thru PO449 & read up

Jul 24, 2014 | Hyundai Accent Cars & Trucks

2 Answers

I get a whistling noise i think is coming from throttle body

Your whistling is quite possibly a vacuumn hose leak on the passenger's side, top of the engine. Look closely at the hose connections coming from the PCV. Small holes can develop in these vacuum line connections, and you will experience a rough idle, as well as the "whistling" noises.

Jul 06, 2014 | 1999 Ford Explorer

1 Answer

Possible ecu problems

Usually it's the solenoid that supplies vacuum to the EGR that fails. Trace the EGR vacuum supply line back to the solenoid and test it to make sure it clicks, allowing vacuum to flow to the EGR valve. If it doesn't click when current is applied to it, replace it.

Aug 06, 2012 | 1993 Honda Accord

2 Answers

The engine is a 12ht turbo diesel 85 modle hj61 land cruiser. engine will start, the base idle is low and runs rough RPM aprox 600. wind up base idle with idle screw to 1000 runs good but u can take turn...

Check to see stop solenoid is working, you may be able to do this by getting someone to turn the key on and off slowly while you are hold your fingers against the side of it.
It is the small metal (Nut) with a wire going into it for an easy description.
The reason you have to choke the engine to stop it is you have either no power going to the switch or the switch is not working properly. i would think more that the switch may not be working properly as it is meant to close fully when power is turned off, if this was working it doesn't matter how much the motor is reving it will still shut of the fuel to the pump.
Sometime these solenoids get a bit of dirt etc stuck in them s well, this is usually just a easy fix,clamp the rubber fuel line before the pump, undo the switch, clean it and refit it, then undo the clamp and prime the pump using the hand primer.
Then start the vehicle, don't try to start the vehicle before you have reprimed the pump as you can damage the engine if you don't have fuel going into it.
Hope this helps, and good luck with it.
Dont rush working on a diesel, just take your time mate.

Jul 23, 2011 | 1989 Toyota Land Cruiser

1 Answer

Wont start when warm without pumpin gas, and engine revving to high

A high rev problem is due to either carbon build up in the iac passage's not letting the iac close to normal idle or the iac is just bad and stuck in that position.

iac= idle air control solenoid

Inside the throttle body intake is a butterfly and just above that is a small opening that the iac uses to move air past the butterfly and this sometimes gets plugged with carbon build up so spray some carb cleaner down through the passage,and sometimes you have to remove the 4 bolts and take the throttle body off to clean them out.

Saturns are known for carbon problems,and they are hard on egr systems,I recommend using sea foam a couple times a year to help fight the carbon build up,just follow the direction and use it in the fuel and vaccum lines as directed but do it on a warm engine and let sit for a couple hours so the sea foam has time to loosen the carbon

May 31, 2010 | 2005 Saturn SC1

1 Answer

Replaced fuel pump, fuel filter, air filter and a sensor on the throttle body. when my truck is started once i press on the gas the truck cuts off. 2004 lincoln aviator

sucking air from intake manifold or other vaccum leaks ..possibly check brake booster vac line ..just some possibilities

Apr 30, 2010 | 2004 Lincoln Aviator

1 Answer

Ongoing P0441 purge code on 2003 PT Cruiser GT. I

if you have replace the purge solenoid the problem is either the vaccum supply hose is loosing vaccum or the purge side is hose is either blocked or cracked.

Apr 21, 2010 | 2003 Chrysler PT Cruiser

2 Answers

Fourwheel drive noise when driving in 2wd noise whinning sound

This is a somewhat common problem with the 04-06 MY 4x4 trucks.

The IWE vac solenoid can ingest water, and introduce it to the IWE, or can develop a problem where it does not keep constant vac on the IWE ends, and the gears hang part in ( grinding ).

You can check the IWE solenoid to make sure it will supply VAC to the IWE ( vac keeps the IWE out, remove vac, and the spring will engage it into the gears ).

You can check the vac lines to the IWE, and the solenoid, but I hate to say the IWE solenoid needs to be replaced.

Here is a link to a PDF version of the TSB with the part number for the updated IWE solenoid that the 07& 08 MY trucks have.

Here is a block diagram of the IWE layout, so you can check the vac lines. Hope it is as easy as a cracked vac line. Also check that the vent tubes are clear, and still up into the engine compartment.

Dec 05, 2009 | 2004 Ford F150

1 Answer

Which Solenoid to buy???

Replace the crank sensor to fix it. It's next to the crankshaft pulley which has to be removed to replace. Next time it gets hot and shuts off , spray or pour some water on it and see if it will start. If it does then you will know what to do.

May 29, 2009 | 1990 Buick Regal

1 Answer

93 honda accord howling noise coming from engine

hi try taking the air filter pipe off the throttle body see if the butterfly spindle has no play in the spindle or the retaining screws that hold it to the spindle have not come loose just put your finger on the butterfly while its idling see if the noise goes if not just pinch the vacuum hose on the vacuum box see if noise goes or changes pitch yates210456

Oct 12, 2008 | 1993 Honda Accord

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