help needed please

[2.5bluenob]

Hi, Can some-one shed some light please. Since putting the turbo's back on the car will not run, will keep stalling and hunting.
If i pull the hose out which is circled in the pic it runs fine. does any-one have any ideas on what the problem is??
cheers
Steve

[playalistic]

No picture?

[Wooden Horse]

I had a similar issue with mine, found out the top vacuum pipe was pushed on a little to far causing it to close the flow. It's the one that's under the throttle body. Worth a try!

[R0162]

2.5bluenob said:

If i pull the hose out it runs fine. does any-one have any ideas on what the problem is??

lol

[2.5bluenob]

here is the pic

[2.5bluenob]

I forgot to add- the strange thing is last year my boost was set too high it was making this pipe pop out. And when it poped out the car would rev to 4000 rpm on idle. But at the mo the wont run until i pull this pipe out and when i do, it doesn't rev to 4000 but runs fine. how is this right?? could it be the pipe is blocked??
Cheers
Steve

[sundance002]

strange but mine has a blank there.

[2.5bluenob]

sundance002 said:

strange but mine has a blank there.

i think you would have a different inlet manifold to me craig as mines a 2.5L
cheers
steve

[2.5bluenob]

Bump!
does any one have any ideas as im running out of time to get car running.
cheers
Steve

[R0162]

R0162 said:

2.5bluenob said:

If i pull the hose out it runs fine. does any-one have any ideas on what the problem is??

lol

i say leave the hose out if it runs fine with it out....then just try blanking it off, it seems the manifold vacuum pressure is obviouly adffecting whatever that pipe is going to...what does that vacuum pipe or breather go to? map sensor?

[2.5bluenob]

R0162 said:

i say leave the hose out if it runs fine with it out....then just try blanking it off, it seems the manifold vacuum pressure is obviouly adffecting whatever that pipe is going to...what does that vacuum pipe or breather go to? map sensor?

Just traced the pipe. it goes to the brake servo.

[mgbond]

Sorry, not really read this thread untill now. My 2.5 has these also. One is boost gauge and the other as you say is break servo. They are correct don't touch them.

BondyE

Edited by mgbond on Tuesday 24th April 10:11

[R0162]

why would it run fine when it is disconnected if its only for the brake servo?

[sundance002]

It really sounds like you have another vacuum pipe loose or a leak, on the 2.5 do you have the pipe that if pushed to far it stop the air flow? as if mine is out it will over rev, but if to far in it will cause the car to stall. so I'm thinking maybe is to far on so when you take the servo one off it then allows more air into the system which then corrects the other vacuum pipe not getting enough air, I'm no mechanic but had a simular prob. Just a thought. If you do have that pipe try putting the servo one back on and play with the othe when pushing it in and out just to elimate that as the cause.

Edited by sundance002 on Tuesday 24th April 13:06

[YellowShed]

Craig's correct in that the extra air is leaning out the over-rich mixture caused by the map sensor not seeing the vacuum from the inlet manifold and correctly adjusting the fuelling to compensate. As a result of this extra air, the mixture is better and the engine runs well.

It probably isn't the lambdas, I suspect you've just not got the pipes on exactly the way they came off. Should be a simple fix, but not necessarily simple to locate

Edited to add: Check the pipework and electrical connections to the idle bypass valve on the rear part of the manifold. If this is not working, your engine probably won't run...

YellowShed

Edited by YellowShed on Tuesday 24th April 13:54

[R0162]

ye that is what i thought..i think trevor is right...

[2.5bluenob]

thanks for the replies guys. lost enough time on it so its going to the garage in the morn so i can actualy go and earn some money instead of messing about with the car.
Cheers
steve