Start Engine Big Bang Restart And It's Now Revving At 4000 Rpm!

[vlpoon]

Hi, Please help me if possible.

I have an 56 Mk3 Mondeo 2 Litre Automatic.

Started engine today then a big bang!

Restarted engine and now revving at just over 4000 rpm.

So car is now stuck on driveway.

Any ideas please?

Many many thanks

Victor

[iantt]

Sounds like servo pipe broke letting in excess air in inlet manifold making it rev up, or another pipe somewhere, go to brake reservoir and follow the black plastic pipe from brake servo to manifold checking for split/broke pipe.

[vlpoon]

Hi,

Many many thanks for the suggestion. Are these pipes under pressure?

So that's the 'bang'?

Cheers.. Thanks again...

[iantt]

Under vacuum., what you may have heard was servo relieving vacuum quickly, may not be that but thats thr first I would check.

[vlpoon]

Ian,

Many many thanks.

I guess it's a trip to the garage.

May be a stupid question - Can I drive it safely even though it is revving at 4000?

Otherwise I may have to get it transported.

Thanks

[pragmatix]

I wouldn't drive an auto stuck at 4000 revs, actually I wouldn't drive a manual stuck at those revs and my local garage is half a mile away

[vlpoon]

Hi,

One down to experience!

Got a RAC man out and the inlet manifold has sheared (:

RAC man says he has never seen that before (: !!!!!

Not sure it's worth repairing a 9 year old Mondeo using brand new Ford Parts...

Thanks a lot for your help...

[jeebowhite]

I would just go for used parts. to be honest, you could buy a donor car cheap enough and just transplant what you want from it.

even buying a whole second car would be cheaper than ford parts...

[vlpoon]

Many thanks everybody for the advice.

Final update. Found a very good mobile mechanic who..

1) Removed Inlet Manifold

2) Obtain a second hand manifold and NEW inlet gaskets

3) Refitted second hand manifold

This all costs £185 (include a £20 tip).

So not too painful. Just hope the repair lasts a couple of years..

See picture of the large hole in the manifold and the piece of plastic blown out.

[jeebowhite]

Yikes.

Ah well least it's fixed and cheap done.

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