2.1 dj engine idle problem

Post by **rayray** » 05 Dec 2005, 21:54

hi can anyone help i have a problem with my 1988 2.1 fuel injected westy its fitted with the digijet system.
the bus will not idle when cold i have changed the valve checked all wires and earths all ok we think it may be the idle control unit can anyone help or supply me with the item in question part number 251907393A so that i can take this off the list please help i need the vehicle daily and evenmore so at present as my wife is due to give birth thanks for reading this

Post by **tonytech** » 05 Dec 2005, 22:38

Pull the plugs on the idle speed control valve and connect them together.
Haynes says this is the way to check advance.
My old bus ran with the control circuit bypassed for 12 months.

T

Post by **Ivor Brownun** » 05 Dec 2005, 23:28

Ask CJ at Syncro Spares, hes on here.

Post by **HarryMann** » 06 Dec 2005, 00:28

Bad starting and idling when cold can be caused by the Temp sender in the back of the thermostat (T2 sender I think) or wiring to it being open circuit (broken, bad connector), or shorted, or so I found - it then tells the auxiliary air regulator the wrong message (you can test this by pinching the hose to it, Bentley says, if it is idling cold it should reduce revs)
The T2 cold resistance should be between 3 and 7 KOhms

Post by **matt** » 06 Dec 2005, 08:31

had this for yonks *may have sorted it*
as tony says, plus undo yellow conector, as in haynes
but, disconnect both + and - on battery, to reset system
then time it....
where do you live ?

if in derby, or close, you welcome to come round

Post by **Ye Olde Syncrospares** » 06 Dec 2005, 08:34

hi rayray,got a idle controller here with the right part number(theres several)give me a call if still needed cheers cj.

Post by **HarryMann** » 06 Dec 2005, 10:22

Is the snorkel compartment where the ISU is mounted, soaking wet or showing signs of having been

Post by **tweeks** » 06 Dec 2005, 21:54

you could try cleaning the idle control valve, the one that sits on top of the engine and buzzes when you turn the ignition on.

Post by **HarryMann** » 07 Dec 2005, 01:40

you could try cleaning the idle control valve, the one that sits on top of the engine and buzzes when you turn the ignition on.

...thought he alluded to having changed that (for a new one?) if 2nd hand, then yes, carb cleaner straight up the jacksy!

Post by **rayray** » 11 Dec 2005, 16:14

thank you all for your advice i will try these items straight away ray