[DuneDriver]

Hi all , I hope someone can give me some direction.
I have picked up a strange fault after steam cleaning my engine .
I know it is not such a good idea to do so with all the plugs etc , but have done before without issues. I used to take car for a drive afterwards , this time did not.
The first problem I encountered was on startup, the rev counter would fully deflect as the starter is cranked, and the Engine management light would stay on.
I will drive, and the engine will just cut. Switching off/on ignition would have the engine start immediately, but rpm no higher than 1400 , with loads of smoke if throttle is added. Engine Mngement light on.
I opened all the plugs I could get to on the battery side, blew out with air, and all mentioned issues are cleared.

I am however stuck with a curious issue. When the engine is started from cold , all is fine , engine smooth ( well , diesel smooth ) , and drives well. When the engine is warm , and I let go of the pedal to idle, the engine again does not go past 1400rpm, and smokes heavily if I try to add juice.
The weird thing is , Yesterday I started up , drove to the highway and drove for 65Kms non stop, sometimes up to 130 kmh. Lots of power , no smoke , perfect. I made sure not to let go of the pedal completely when traffic slowed down , but used brakes to regulate, so it was partial power on all the time.
As soon as I stopped at the first turnoff, and let the motor idle with no pressure on the gas-pedal, the problem was back. No power , 1400 rpm and smoke .

So , my question is, is there any control which is fully deflected and unmoving with throttle input when the motor is below operating temperature , but then has to deflect with throttle input when the engine is on normal operating temp?
Are there other hidden plugs I should look at, or could it be a vacuum issue?
Anton

[DuneDriver]

My apologies , did an edit in the subject line.
Forgot to mention that it is a Pajero 3.2 Did , 2000 model

[CATS]

Do the diy fault code reader and see what pops up on the fault codes. Also check for the butterfly valve as described by 4ePikanini somewhere. Do search

Sent from my GT-P7100 using Tapatalk

[andrew.ashton]

Building on CATS's response, it may be worth checking that you have not knocked off one of the vacuum lines when cleaning the engine.

[DuneDriver]

Thanks for responses.I did do some research on the site and got some expert help as well.(Tnks Marius ).
It is indeed the idle buttelfly valve causing the problem, but not due to the lack of vaccuum suction. Too much in fact.
What is happening is that when the motor reaches operating temp, the solenoid is activated at idle and closes the valve as it should.It is supposed to let go when the throttle is opened, but does not, thus effectively smothering the motor above idle.
Pulling off the vaccuum pipe from the diaphragm cured it instantly, but shows as a fault on the engine mngemnt. PLugging the pipe cured that as well.
Will check over the weekend if the problem is the solenoid itself or ecu continuously supplying power to it.
Now I see speed control is dead...

[4ePikanini]

This the conversation between myself and Anton


20:43, 04 Jun - ‪+27 73 xxx xxxx: Hi Marius, hoop dit gaan nog goed?
Ek het issue met my 3.2 Pajero en wil jou brein pick asb.
Die idle butterfly deflect ten volle wanneer warm is en smoor die enjin.
Op die pajeroclub website se^ jy" blocking the vaccuum pipe that feeds the diaphragm will throw a CEL".
Wat is die CEL?
As ek die pyp aftrek van die diaphragm en blok,kan ek vir eers so ry ?
Ek sien as ek die pyp aftrek gaan die engne mngement icon aan,as ek dit connect gaan dit af.
groetnis Anton Els.


20:51, 04 Jun - Marius: As jy mooi kyk sal jy sien hy is verstelbaar. Jy kan hom stel sodat hy net genoeg oop is om engine te laat idle. Engine ligge = CEL. Check Engine Light.

As jy wil kan jy vacuum pypie afhaal vir nou. Sit net n skroef in die pypie sodat hy nie vuil lug suig nie. Die engine liggie sal aankom sodra die engine warm is en die engine probeer idle. Dit maak geen verskil aan verrigting. Jy kan maar so ry.


21:03, 04 Jun - ‪+27 73 xxx xxxx: Baie dankie.
Ek het issue met die vaccuum solenoids.Wanneer enjin warm, is daar heeltyd vaccuum op die idle butterfly. Smoor kar dat jy net rook sien.
Een van die pypies op een van die solenoids het afgebreek.ek het toe 2 van die solenoids omgeruil met mekaar,want daar was ene wat se een pypie afgeblok en ongebruik is.
Weet jy of die solenoids met twee pypies langs mekaar so werk dat albei gelyk oop of toe is,en of hulle alternately oop en toe maak?


21:07, 04 Jun - Marius: As joune soos myne was werk dit so. Dit diaphragm onder die throttle body aktiveer net as jy engine afskakel. Die boonste diaphragm aktiveer op idle as die engine warm is. As die boonste een aktiveer bo idle revs het jy dalk n elektroniese of kontrole probleem. Waar bly jy? Jy is nie dalk in oos london nie?


21:08, 04 Jun - Marius: Het jy nie dalk die egr vacuim pypie op die idle diaphragm gesit nie?


21:14, 04 Jun - ‪+27 73 xxx xxxx: Nee ,in die Paarl.
Op die video beweeg die diafragma die butterfly as die enjin rev bokant idle. Myne is tans heeltyd fully deflected as enjin warm is ,geen beweging tussen idle en rev bokant idle nie.Smoor dus enjin sodra ek gas gee.
Ek het btw post op website gesit onder DuneDriver,maar het vanaand die butterfly issue gesien.


21:16, 04 Jun - ‪+27 73 xxx xxxx: Weet jy dalk waar mens van die solenoids los kan koop? Stealers wil my hele assembly met pype verkoop.


21:21, 04 Jun - Marius: Ek het my 4x4 solenoids vervang met solenoids uit n ford ranger maar moes connectors splice etc. Ek sou eers voltage behavior op die solenoid check voor ek vervang. Stuur ecu voltage permanent of hak die solenoid vas as hy net een keer geaktiveer word?


21:22, 04 Jun - Marius: Ek sal eers dit probeer vas stel. Niks so irriterend soos om nuwe parte te koop maar dit los nie probleem op nie.


21:23, 04 Jun - ‪+27 73 xxx xxxx: Dis baie goeie vraag.Sal dit uitcheck.
Dankie baie.