Too early to tell yet Jim but you may be elevated to god status in my eyes! I
have not had time to investigate because the sun is out and the wifes MX5 had 2
broken rear springs that I have done tonight, so she can get the MOT and we can
see the daughter Rebecca drive a Lambo round Goodwood on Wed as she is doing a
report on it and is excited as she has just got her ARDS and on Thur will be at
Silverstone driving Ginetta's, so she is better than her old Dad already LOL.
I reckon your idea about the cam belt is the likely one as it ticks the symptom
boxes completely and I never thought of it until you wrote your reply, thanks
for that I will let you know when I have solved it!
What the car was doing was backfiring a bit on closing the throttle to slow.
----- Original Message -----
From: Jim Hearne
To: quantumowners@googlegroups.com
Sent: Sunday, March 13, 2011 8:52 PM
Subject: Re: [Quantum Owners] CVH Turbo died
I'm assuming this is the Escort KE injection engine as you mention the pink
relay.
The fuel pump relay on this system does have a engine speed input but it's
only supposed to be so that the fuel pump stops if the engine stops running
When you crank the engine do you hear the fuel pump still running ?
If the relay had died completely you wouldn't have the engine running at all.
If you look at a wiring diagram you can link out the relay to prove it's not
that.
Have you checked all the intake hoses, if one has come off then the air
wouldn't be going through the air flow meter and it would supply very little
fuel.
Another fault could be the centre contact on the distributor cap, this can
break off and then the spark only manages to jump the gap at higher engine
speeds.
It's when the engine is decelerating that the cam belt can break or jump
teeth (if it's too loose), my Mondeo failed under braking a few months ago
though on that it was the tensioner pulley that went.
Bent all the valves on the head :-(
Jim
On 12/03/2011 21:20, jon jackson wrote:
Was dead lucky to make it home yesterday as after braking hard my 2+2 CVH
turbo was very difficult to start and after a bumping it it managed to run on
high revs only, as soon as you lifted off it died.
It will not tick over or run below about 1500 rpm, much as if it had an
inlet air leak but I have sealed the servo etc to check.
I suspect the big pink fuel pump relay, any other ideas guys?
When you try to start it it runs a couple of revolutions and stops.
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