Mk1 Mondeo 1.8 GLX on a "P" reg, (EEC IV) 90k miles.
Runs fine but really doesn't like doing 30mph in 4th. It's like it 
kangaroos, it misses, then picks up etc, weird.
  It's absolutely fine doing 35 or 25 but at an indicated 30 that's when 
it acts up.
Is this likely to be some issue with the fact that the revs are 1200ish 
at this point and it's something weird with the idle control/TPS or 
somesuch?
The *really* weird thing is that it doesn't do it at 1200rpm in 1st,2nd 
or 3rd...

Worse when cold, less noticeable when fully warmed up.
The thing idles just fine and runs *perfectly* otherwise, not showing 
any error codes either.
Recent emissions test was fine.
Any ideas? Or is it just a case of putting up with it?

It is a little heavy on fuel (av 27mpg), but that's probably because it 
gets mostly used for short journeys in town...

Oh, and it's had new (Ford) plugs, leads, air filter, coolant temp 
sensor and  thermostat.
All of which it needed ;) but none of which made any difference to the
problem.

Lee
-- 
Email address is valid, but is unlikely to be read.

"Lee"  wrote in message 
news:r6eve.4572$11.1257@newsfe2-win.ntli.net...

> Mk1 Mondeo 1.8 GLX on a "P" reg, (EEC IV) 90k miles.
> Runs fine but really doesn't like doing 30mph in 4th. It's like it 
> kangaroos, it misses, then picks up etc, weird.
>  It's absolutely fine doing 35 or 25 but at an indicated 30 that's when it 
> acts up.
> Is this likely to be some issue with the fact that the revs are 1200ish at 
> this point and it's something weird with the idle control/TPS or somesuch?
> The *really* weird thing is that it doesn't do it at 1200rpm in 1st,2nd or 
> 3rd...
>
> Worse when cold, less noticeable when fully warmed up.
> The thing idles just fine and runs *perfectly* otherwise, not showing any 
> error codes either.
> Recent emissions test was fine.
> Any ideas? Or is it just a case of putting up with it?
>
> It is a little heavy on fuel (av 27mpg), but that's probably because it 
> gets mostly used for short journeys in town...
>
> Oh, and it's had new (Ford) plugs, leads, air filter, coolant temp sensor 
> and  thermostat.
> All of which it needed ;) but none of which made any difference to the
> problem.


Stab in the dark - vacuum leak?

What happens if you're doing 30 in 5th?

Try taking it on the motorway and cain the arse of it in everygear (probably 
not so easy to try in first).

Ta,
G.

"Lee"  wrote in message
news:r6eve.4572$11.1257@newsfe2-win.ntli.net...

> Mk1 Mondeo 1.8 GLX on a "P" reg, (EEC IV) 90k miles.
> Runs fine but really doesn't like doing 30mph in 4th. It's like it 
> kangaroos, it misses, then picks up etc, weird.
>  It's absolutely fine doing 35 or 25 but at an indicated 30 that's when it 
> acts up.
> Is this likely to be some issue with the fact that the revs are 1200ish at 
> this point and it's something weird with the idle control/TPS or somesuch?
> The *really* weird thing is that it doesn't do it at 1200rpm in 1st,2nd or 
> 3rd...
>
> Worse when cold, less noticeable when fully warmed up.
> The thing idles just fine and runs *perfectly* otherwise, not showing any 
> error codes either.
> Recent emissions test was fine.
> Any ideas? Or is it just a case of putting up with it?
>
> It is a little heavy on fuel (av 27mpg), but that's probably because it 
> gets mostly used for short journeys in town...
>
> Oh, and it's had new (Ford) plugs, leads, air filter, coolant temp sensor 
> and  thermostat.
> All of which it needed ;) but none of which made any difference to the
> problem.


Stab in the dark - vacuum leak?

What happens if you're doing 30 in 5th?

Try taking it on the motorway and cain the arse of it in everygear (probably
not so easy to try in first). If it's a vacuum leak it should appear at 
other parts of the range in most gears, if not it could be sticky valves, 
although at P reg, I'd have thought you're engine would be the Zetec-E.

One solution is to do an oil change with 5W30 semi synth, take for a good 
arse kicking, and then re test.

Ta,
G.

Andy Hewitt wrote:

> Lee  wrote:

>>Oh, and it's had new (Ford) plugs, leads, air filter, coolant temp 
>>sensor and  thermostat.

> If it's had those, then it looks like it could be the old Zetec sticking
> valve problem.

Works fine otherwise though, would it just show up like this?
It's always had the right oil, (it came with FSH) and has Ford 
semi-synth in it atm.

> 
> A short time fix/test, is to run some very strong injector cleaner
> through it - such as Forte' or Fortron, both of which aren't cheap, but
> are about the best in the market.


Ok, will try that, might improve the mpg a little too.

> 

<snipped>

Lee
-- 
Email address is valid, but is unlikely to be read.

G-Man wrote:



> Stab in the dark - vacuum leak? 


Not one I can find anyway...

> 
> What happens if you're doing 30 in 5th? 


It doesn't do it...

> 
> Try taking it on the motorway and cain the arse of it in everygear (probably 
> not so easy to try in first).


Did that t'other day, can't feel it missing at all at any other speed, 
it's bizarre really.

Lee

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G-Man wrote:
snip

>  if not it could be sticky valves, 
> although at P reg, I'd have thought you're engine would be the Zetec-E.


AFAICT it's a series one lump, likely sitting around for quite a while 
before it got registered ;)

> 
> One solution is to do an oil change with 5W30 semi synth, take for a good 
> arse kicking, and then re test.


It's got that in it anyway, and the service history claims it's always 
had it...

Lee

-- 
Email address is valid, but is unlikely to be read.

Andy Hewitt wrote:


> The recommended stuff is the Ford 5w/30 grade. Anything thicker will
> cause problems.


It's got the Ford 20 5w/30 in it, thought that was semi synth?


> And yes, it could show up like that. The fact that it's worse when
> warming up is a big indicator.


Ok :) It's just that it isn't down on power at all when cold, nor 
difficult to start - which most people seem to report when they have the 
sticky valve problem.
What it feels most like, is as if my foot was moving slightly on the 
throttle pedal IYSWIM.


> Yes, it won't do any harm either way.


That's always A Good Thing :)

Lee
-- 
Email address is valid, but is unlikely to be read.

"Lee"  wrote in message
news:R1ive.4594$%O1.2045@newsfe3-gui.ntli.net...

> G-Man wrote:
> snip
> >  if not it could be sticky valves,
> > although at P reg, I'd have thought you're engine would be the Zetec-E.
>
> AFAICT it's a series one lump, likely sitting around for quite a while
> before it got registered ;)
> >
> > One solution is to do an oil change with 5W30 semi synth, take for a
good
> > arse kicking, and then re test.
>
> It's got that in it anyway, and the service history claims it's always
> had it...
>
> Lee
>
> -- 
> Email address is valid, but is unlikely to be read.


What about the throttle position sensor on the side of the throttle
body,there a common fault as there plastis and a metal pin moves around
inside it,hence creating a groove over time,or egr valve on bulhead,silver
box very common fault which gives you crap mpg,
Look at the back of the coil pack theres a big round valve with two pipes
coming out,joining onto the pipes is two rubber hoses one goes to a valve on
the bulkhead next to that silver box,remove the pipe bung it and see if it
runs better.
Or try www.fordmondeo.org very helpfull site.

On Sat, 25 Jun 2005 14:45:43 GMT, Lee 
wrote:


>Mk1 Mondeo 1.8 GLX on a "P" reg, (EEC IV) 90k miles.
>Runs fine but really doesn't like doing 30mph in 4th. It's like it 
>kangaroos, it misses, then picks up etc, weird.
>  It's absolutely fine doing 35 or 25 but at an indicated 30 that's when 
>it acts up.
>Is this likely to be some issue with the fact that the revs are 1200ish 
>at this point and it's something weird with the idle control/TPS or 
>somesuch?
>The *really* weird thing is that it doesn't do it at 1200rpm in 1st,2nd 
>or 3rd...
>
>Worse when cold, less noticeable when fully warmed up.
>The thing idles just fine and runs *perfectly* otherwise, not showing 
>any error codes either.
>Recent emissions test was fine.
>Any ideas? Or is it just a case of putting up with it?
>
>It is a little heavy on fuel (av 27mpg), but that's probably because it 
>gets mostly used for short journeys in town...
>
>Oh, and it's had new (Ford) plugs, leads, air filter, coolant temp 
>sensor and  thermostat.
>All of which it needed ;) but none of which made any difference to the
>problem.
>
>Lee



My Mk2 is getting a bit like that, 65,000 on the clock. I might try
the jet cleaner, thanks for this thread very interesting



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GS850 Trike

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It sounds like that you are putting into forth gear too soon. I'd wait until
the RPM's are up some.
"Lee"  wrote in message
news:r6eve.4572$11.1257@newsfe2-win.ntli.net...

> Mk1 Mondeo 1.8 GLX on a "P" reg, (EEC IV) 90k miles.
> Runs fine but really doesn't like doing 30mph in 4th. It's like it
> kangaroos, it misses, then picks up etc, weird.
>   It's absolutely fine doing 35 or 25 but at an indicated 30 that's when
> it acts up.
> Is this likely to be some issue with the fact that the revs are 1200ish
> at this point and it's something weird with the idle control/TPS or
> somesuch?
> The *really* weird thing is that it doesn't do it at 1200rpm in 1st,2nd
> or 3rd...
>
> Worse when cold, less noticeable when fully warmed up.
> The thing idles just fine and runs *perfectly* otherwise, not showing
> any error codes either.
> Recent emissions test was fine.
> Any ideas? Or is it just a case of putting up with it?
>
> It is a little heavy on fuel (av 27mpg), but that's probably because it
> gets mostly used for short journeys in town...
>
> Oh, and it's had new (Ford) plugs, leads, air filter, coolant temp
> sensor and  thermostat.
> All of which it needed ;) but none of which made any difference to the
> problem.
>
> Lee
> --
> Email address is valid, but is unlikely to be read.

It's not the Throttle Position Sensor is it?  They often go on Fords, and 
often at the 30mph mark in 4/5th gear because that's where they get most 
wear (most people doing that sort of speed most of the time).  The parts are 
around 30-50 and, I think, easy to fit (I've never done it - only paid the 
garage).
"Lee"  wrote in message 
news:r6eve.4572$11.1257@newsfe2-win.ntli.net...

> Mk1 Mondeo 1.8 GLX on a "P" reg, (EEC IV) 90k miles.
> Runs fine but really doesn't like doing 30mph in 4th. It's like it 
> kangaroos, it misses, then picks up etc, weird.
>  It's absolutely fine doing 35 or 25 but at an indicated 30 that's when it 
> acts up.
> Is this likely to be some issue with the fact that the revs are 1200ish at 
> this point and it's something weird with the idle control/TPS or somesuch?
> The *really* weird thing is that it doesn't do it at 1200rpm in 1st,2nd or 
> 3rd...
>
> Worse when cold, less noticeable when fully warmed up.
> The thing idles just fine and runs *perfectly* otherwise, not showing any 
> error codes either.
> Recent emissions test was fine.
> Any ideas? Or is it just a case of putting up with it?
>
> It is a little heavy on fuel (av 27mpg), but that's probably because it 
> gets mostly used for short journeys in town...
>
> Oh, and it's had new (Ford) plugs, leads, air filter, coolant temp sensor 
> and  thermostat.
> All of which it needed ;) but none of which made any difference to the
> problem.
>
> Lee
> -- 
> Email address is valid, but is unlikely to be read. 

Lee  wrote:


> Andy Hewitt wrote:
> > Lee  wrote:
> 
> >>Oh, and it's had new (Ford) plugs, leads, air filter, coolant temp 
> >>sensor and  thermostat.
> 
> > If it's had those, then it looks like it could be the old Zetec sticking
> > valve problem.
> Works fine otherwise though, would it just show up like this?
> It's always had the right oil, (it came with FSH) and has Ford 
> semi-synth in it atm.


The recommended stuff is the Ford 5w/30 grade. Anything thicker will
cause problems.

And yes, it could show up like that. The fact that it's worse when
warming up is a big indicator.


> > A short time fix/test, is to run some very strong injector cleaner
> > through it - such as Forte' or Fortron, both of which aren't cheap, but
> > are about the best in the market.
> 
> Ok, will try that, might improve the mpg a little too.


Yes, it won't do any harm either way.

-- 
Andy Hewitt **  FAF#1, (Ex-OSOS#5) - FJ1200 ABS
Honda Civic: Windows free zone (Mac G5 Dual Processor)
http://mysite.wanadoo-members.co.uk/thehewitts2/index.htm
(updated Feb 21 2005)

In article <r6eve.4572$11.1257@newsfe2-win.ntli.net>, 
cyberwitch@ukonline.co.uk says...

> Mk1 Mondeo 1.8 GLX on a "P" reg, (EEC IV) 90k miles.
> Runs fine but really doesn't like doing 30mph in 4th. It's like it 
> kangaroos, it misses, then picks up etc, weird.
> 

Are you sure it is missing, and not just kangarooing?
It could be drivetrain slop showing up.
My celica 4x4 gets a little bit like that.
It is a lot better since I swapped the rear engine mount.
-- 
Carl Robson
Car PC Build starts again. http://smallr.com/rz
Homepage: http://www.bouncing-czechs.com

Thanks for all the suggestions, I'm going to have a proper look at it 
over the weekend...

Lee
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Email address is valid, but is unlikely to be read.