what's this

[frp88]

my middie hasent been running real good at ideal under load so i think there is a prob with the pump.When I saw the hose coming from the pump i followed it to these 2 things which i think control cold start and load ideal.I cant get the photo uploaded i cant get it small enough.Anyway they are above the brake booster does anybody know.

 

[crushers]

hummm...
no year stated
no model stated
no engine designation
no location of truck


my guess, it is the VSV valve...

 

[roscoFJ73]

.I cant get the photo uploaded i cant get it small enough.

You need the free image resizer from MS and use the "small" setting.

 

[frp88]

O.K sorry it's a bj74 jdm 13bt auto a440f 1988 i downloaded the link that n.a.m leaf on o/l but there is no i con so i dont know how to use it

 

[BJ-44]

Above and to the right of the brake booster are the vacuum solenoids that control the 4WD engagement on a vacuum operated transfer? On a right hand drive that is.

 

[frp88]

man are you sure cos the hoses go to and from the diesel pump and the exhaust manifold i'll have another look at it.So then do you know what my prob is with the rough idle under load only.What is a vsv valve Iam hoping for more info thanks

 

[bigbrowndog]

So then do you know what my prob is.............
Yes, definately a lack of information passed on...LOL.
Have you changed your filter? Have you made sure there are no air leaks in the lines and injectors.? Have you got a mate that can post your picture? Few more details. cheers

 

[crushers]

VSV = vacumm switching valve.

as BJ44 posted, this is the only thing that has vacumm lines running to it above the brake master...

 

[frp88]

So then do you know what my prob is.............
Yes, definately a lack of information passed on...LOL.
Have you changed your filter? Have you made sure there are no air leaks in the lines and injectors.? Have you got a mate that can post your picture? Few more details. cheers

yes i have changed the filter so my vac theory is all wrong then does anybody know how it maintains its idle hot or cold.Same goes for the a/c the idle goes up.Well my sec theory is I didnt bleed it correctly which i will do on the weekend.Next would be injector ?

 

[crushers]

AC idle up is controlled by a VSV unit as well as the shut down, t/case engagement...
cheers

 

[frp88]

I have had alook and there are a of vac valves that are on the pump I know that my vac pump is working cos I have 4wd.I think it to the shop cos it to much I need the vac gauge and the correct value.