But, wasn't yours a 2+2, hence Mk2 Fiesta instruments which expect
4 pulses per engine rev, just as the Zetec ecu puts out.
It was the distributorless CVH engines (Mk3 Fiesta, Mk5 Escort)
that for some reason Ford decided to connect the rev counter to one
of the coil wires which since there are 2 coils only gives 2 pulse
per rev.
They changed the CVH rev counters to match this.
Probably was done as the late carb'd CVH's with the distributorless
ignition didn't have a rev output from the ignition only ecu.
Then they carried that system onto the CVH injection.
When they did the Zetec they went back to normal but with a
dedicated ouput from the ECU, as this wasn't on a coil connection
they could also do away with the suppressor.
Jim
From: Mark Miles
Sent: Monday, March 05, 2012 9:13 AM
To: [email protected]
Subject: Re: [Quantum Owners] Re: H4 Rev Counter
I am now confused, when I did the transplant I used the cvh clocks
with the zetec ecu, All I did was connect the output from the ecu
to the old coil wire that fed the rev counter. This gives me the
rev readings that I would expect, idle at just below 1000 etc.
Could this be something that varies with the ecu type?
Mark
Mark Miles
Manager
Bar Square
8 Market Place
Wokingham
Berkshire
RG40 1AL
07565 110439
From: Jim Hearne <[email protected]>
To: [email protected]
Sent: Monday, 5 March 2012, 9:02
Subject: Re: [Quantum Owners] Re: H4 Rev Counter
The CVH engine with the distributorless ignition drove the rev
counter from one of the 2 coils wires..
The Zetec runs it from a dedicated output from the ECU, if you
connect that to the CVH rev counter it will show twice the revs.
If you are still using the CVH main wiring and instrument cluster
then you can switch the rev counter connection back to one of the
zetec coil connections and it will work fine (keep the CVH
suppressor in circuit).
What combination of wiring looms do you have now ?
Jim
--------------------------------------------------
From: "george" <[email protected]>
Sent: Monday, March 05, 2012 8:00 AM
To: "Quantum Owners Group" <[email protected]>
Subject: [Quantum Owners] Re: H4 Rev Counter
> Hi Jim
>
> The rev counter does not move but on test there is a reading and
the
> meter reads the revs. Wondered if it was not compatible being CVH
with
> Zetec brain...
>
> On Mar 4, 9:03 pm, Jim Hearne <[email protected]> wrote:
>> What does the rev counter do ?
>>
>> Jim
>>
>> On 04/03/2012 18:59, george wrote:
>>
>>
>>
>>
>>
>>
>>
>> > I have installed a zetec blacktop in my H4 and all works fine
except
>> > the rev counter. Tested the out pit from the ecu and it reads
the revs
>> > of the engine. Can anyone tell me if I need to get a newer rev
counter
>> > from an zetec car as mine was CVH could that be the reason its
the
>> > only thing I can think..
>> > Any thoughts........
>
> -- You received this message because you are subscribed to the
Google Groups "Quantum Owners Group" group.
> To post to this group, send email to [email protected]
> To unsubscribe from this group, send email to
[email protected]
> For more options, visit this group at
http://groups.google.com/group/quantumowners?hl=en
>
> IMPORTANT NOTE: All information presented herewith is provided on
an "As Is" basis, without warranty or the implication thereof.
Neither the Quantum Owners Club nor the individuals associated with
the Quantum Owners Club or in the preparation of the above
information shall have any liability to any person or entity with
respect to liability, loss, or damage caused or alleged to be
caused directly or indirectly by the instructions contained within
this or related message(s).
>
>
-- You received this message because you are subscribed to the
Google Groups "Quantum Owners Group" group.
To post to this group, send email to [email protected]
To unsubscribe from this group, send email to
[email protected]
For more options, visit this group at
http://groups.google.com/group/quantumowners?hl=en
IMPORTANT NOTE: All information presented herewith is provided on
an "As Is" basis, without warranty or the implication thereof.
Neither the Quantum Owners Club nor the individuals associated with
the Quantum Owners Club or in the preparation of the above
information shall have any liability to any person or entity with
respect to liability, loss, or damage caused or alleged to be
caused directly or indirectly by the instructions contained within
this or related message(s).
--
You received this message because you are subscribed to the Google
Groups "Quantum Owners Group" group.
To post to this group, send email to [email protected]
To unsubscribe from this group, send email to
[email protected]
For more options, visit this group at
http://groups.google.com/group/quantumowners?hl=en
IMPORTANT NOTE: All information presented herewith is provided on
an "As Is" basis, without warranty or the implication thereof.
Neither the Quantum Owners Club nor the individuals associated with
the Quantum Owners Club or in the preparation of the above
information shall have any liability to any person or entity with
respect to liability, loss, or damage caused or alleged to be
caused directly or indirectly by the instructions contained within
this or related message(s).
--
You received this message because you are subscribed to the Google
Groups "Quantum Owners Group" group.
To post to this group, send email to [email protected]
To unsubscribe from this group, send email to
[email protected]
For more options, visit this group at
http://groups.google.com/group/quantumowners?hl=en
IMPORTANT NOTE: All information presented herewith is provided on
an "As Is" basis, without warranty or the implication thereof.
Neither the Quantum Owners Club nor the individuals associated with
the Quantum Owners Club or in the preparation of the above
information shall have any liability to any person or entity with
respect to liability, loss, or damage caused or alleged to be
caused directly or indirectly by the instructions contained within
this or related message(s).
