help needed please thanks

[bambam27]

hello iv just had a big problem with my v70 r awd 2.3ltr 20v turbo on a r reg

the car was going then it went bang pop then just stopped working and now it will start but very lumpy and it wont idle at all or rev then just dies

i put the diagnostic machine onto it and it came up with this as follows in the right oreder

p0243 (pd) turbo super charger wastegate regulating solenoid valve a p0243 turbo

any thoughts on what it could be thanks

[dooby]

A bang would sound like a boost hose pipe has let go, and could explain the rough running.

I'd probably check all the pipe work from the turbo to intercooler and intercooler to throttle body, and also (given the error code) the smaller diameter pipework connecting the boost control solenoid to the wastegate actuator.

HTH, Pete

PS Hopefully there weren't any new rattling noises when the engine tried to start? That could indicate something more serious has let go :-(

[foggyjames]

Yes, check the basics, and see how you get on. It has the potential to be something more sinister, but let's start with the simple stuff. As Pete says, check all the piping between the air mass meter and the throttle body. You may like to trying unplugging the air mass meter to see if that changes things. The car can run without it, but I'm unclear on how happy a turbo model will be (especially if you actually try to drive it), so be careful! Non-turbo ones are fine. If it improves with the AMM unplugged, that would indicate to me that you have a boost leak (like Pete suggests), or the AMM is faulty.

Under what conditions were you driving prior to the pop...accelerating, cruising...?

cheers

James

[bambam27]

Originally Posted by foggyjames

Yes, check the basics, and see how you get on. It has the potential to be something more sinister, but let's start with the simple stuff. As Pete says, check all the piping between the air mass meter and the throttle body. You may like to trying unplugging the air mass meter to see if that changes things. The car can run without it, but I'm unclear on how happy a turbo model will be (especially if you actually try to drive it), so be careful! Non-turbo ones are fine. If it improves with the AMM unplugged, that would indicate to me that you have a boost leak (like Pete suggests), or the AMM is faulty.

Under what conditions were you driving prior to the pop...accelerating, cruising...?

cheers

James

i was giving it the full beans in 3rd gear and i kept the boost under 10psi as it was boosting over 20psi for some reason so i had it turned right down a few weeks ago and so far it was ok no probs intill yesterday

[bambam27]

Originally Posted by dooby

A bang would sound like a boost hose pipe has let go, and could explain the rough running.

I'd probably check all the pipe work from the turbo to intercooler and intercooler to throttle body, and also (given the error code) the smaller diameter pipework connecting the boost control solenoid to the wastegate actuator.

HTH, Pete

PS Hopefully there weren't any new rattling noises when the engine tried to start? That could indicate something more serious has let go :-(

ok thanks ile double check it all later thank you

[bambam27]

Originally Posted by dooby

A bang would sound like a boost hose pipe has let go, and could explain the rough running.

I'd probably check all the pipe work from the turbo to intercooler and intercooler to throttle body, and also (given the error code) the smaller diameter pipework connecting the boost control solenoid to the wastegate actuator.

HTH, Pete

PS Hopefully there weren't any new rattling noises when the engine tried to start? That could indicate something more serious has let go :-(

also no other noises when i tried starting it in just wont run or rev

[foggyjames]

So let me get this clear...when it went ping, was it at 10psi or 20psi? If you've been running 20psi, there's a good chance the fuel system will not be capable of supporting that, and you will have done some damage. Let's hope not.

Are you saying that it now won't start?

Try inspecting the hoses and unplugging the AMM, and take it from there.

cheers

James

[acshortt5]

Originally Posted by foggyjames

So let me get this clear...when it went ping, was it at 10psi or 20psi? If you've been running 20psi, there's a good chance the fuel system will not be capable of supporting that, and you will have done some damage. Let's hope not.

Are you saying that it now won't start?

Try inspecting the hoses and unplugging the AMM, and take it from there.

cheers

James

How has it been getting to 20psi? Has it been remapped? Or are you using an MBC? Or is it stock? As James says the fuel system as standard isn't really capable of sustaining 20psi.

If it's stock then hitting that boost pressure makes me think that one of your small vac hoses came disconnected/split allowing the car to overboost (I can't remember which one does it but its one of the three connected to the BCS) and then while running at the high boost one of your main hoses has popped off or split leading to the poor idling/vac problem/unable to start.

Have you checked all of your hoses yet? (As I recommended in your other thread)

[foggyjames]

Given the error code relating to the BCS, that's what I'm afraid of. That would almost certainly be very bad news. Let's hope it's just a popped hose...

EDIT: Even if it does prove to be something simple, that BCS fault needs to be looked at in detail right away, or major damage is likely to ensue.

cheers

James

[bambam27]

Originally Posted by acshortt5

How has it been getting to 20psi? Has it been remapped? Or are you using an MBC? Or is it stock? As James says the fuel system as standard isn't really capable of sustaining 20psi.

If it's stock then hitting that boost pressure makes me think that one of your small vac hoses came disconnected/split allowing the car to overboost (I can't remember which one does it but its one of the three connected to the BCS) and then while running at the high boost one of your main hoses has popped off or split leading to the poor idling/vac problem/unable to start.

Have you checked all of your hoses yet? (As I recommended in your other thread)

hello no its not standard loads of work has been done by me over the last month and it was boosting over 20psi when i 1st had it all back together with all new parts ect and was over boosting and was cutting out a little when i booted it hard so i turned the acutor down and has been ok since up intill a few days ago when it went bang and stopped working