Another 1.8T Hesitation under hard acceleration

[MR (Z)T]

Hi guys as per title my 1.8T hesitates just as the turbo is kicking in at 3000RPM upon flooring the accelerator mainly in 2nd but also in 3rd gear.

At first I thought it was the common misfire symptoms that everyone else has pointed to. I have checked the turbo pipes all seems fine and I dont think it is the coil packs or spark plugs etc. I wouldn't describe it as a misfire or any kind of electrical fault.

It is definitely more like a very strong hesitation causing the whiplash jerking that others speak of.

I have narrowed the problem down and find it only happens when I accelerate hard with 1/4 of a tank or less of petrol. So my question is do you guys think it is fuel related and do I need to get myself an orange clip on my filter as maybe this is the cause????

This problem ruins what otherwise is an excellent drive when working correctly.

Any help much appreciated

[mgnev]

Hi,

It could be the manifold pressure sensor, number 6 on this grid. http://www.rimmerbros.co.uk/Item--i-GRID001691 They sometimes give that sort of problem. Or it could be sucking air in around the throttle body?

[T-Cut]

Originally Posted by MR (Z)T

do I need to get myself an orange clip on my filter as maybe this is the cause?

A definite yes I'd say. It may or may not not be the current problem, but you will eliminate a major cause of poor fueling.

TC

[MR (Z)T]

Originally Posted by mgnev

Hi,

It could be the manifold pressure sensor, number 6 on this grid. http://www.rimmerbros.co.uk/Item--i-GRID001691 They sometimes give that sort of problem. Or it could be sucking air in around the throttle body?

If these were the problem, wouldnt this happen all the time? and not just when there is little fuel in tank?

[Figo]

could be the fuel pumps (If it works the same was as the dervs?)

[mgnev]

Originally Posted by MR (Z)T

If these were the problem, wouldnt this happen all the time? and not just when there is little fuel in tank?

Possibly. I'm going on what I've read on here in the past. I did read a post that someone had a problem much as you describe, replaced that sensor and it cured it.

[ts autos]

Originally Posted by mgnev

Possibly. I'm going on what I've read on here in the past. I did read a post that someone had a problem much as you describe, replaced that sensor and it cured it.

Turbo vac and boost pipe oil swollen and sucking in air almost definately

[MR (Z)T]

Originally Posted by ts autos

Turbo vac and boost pipe oil swollen and sucking in air almost definately

TS would this happen when fuel tank is low only?

Anyone got diagram of the turbo with the pipes labelled?
...and where would one get replacements?

[ts autos]

No all the time under load if it's not the filter syndrome, it'll be this it's repairable with a smaller pipe insert or cable tie

[MR (Z)T]

Originally Posted by ts autos

No all the time under load if it's not the filter syndrome, it'll be this it's repairable with a smaller pipe insert or cable tie

Ok will try both, just got to figure where to put the cable tie(s)...

[ts autos]

See the post boost problem on this page it shows the pipes I'm talking about

[MR (Z)T]

Originally Posted by ts autos

See the post boost problem on this page it shows the pipes I'm talking about

Thanks TS do you mean this thread
http://forums.mg-rover.org/showthrea...=boost+problem ?

If so whats the best position to sort the white pipe on the wastegate and should i need to remove anything?