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Old 08-28-2005, 15:01   #1 (permalink)
pad
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idles rough

i have a 1999 ford escort when idling fluctuates between 900 1000 revs a
minute i checked the vaccum hoses for any splits they r ok when driving
the cars fine

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Old 08-28-2005, 20:01   #2 (permalink)
Backyard Mechanic
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Re: idles rough

"pad" <karen.reynolds107@ntlworld.com> wrote in
news:857dd380918c1856e15f0b1f850f1dba@localhost.talkaboutautos.com:

> i have a 1999 ford escort when idling fluctuates between 900 1000 revs a
> minute i checked the vaccum hoses for any splits they r ok when driving
> the cars fine
>


any other problems at all?
idle too high when cold?

May be the TPS throttle position sensor. may be sticky IAC.. the idle
controller
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Old 08-29-2005, 12:01   #3 (permalink)
pad
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Re: idles rough to backyard mech

my ford escort does idle high when cold but thought this was the norm could
you give me an idea what it should idle at when cold.

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Old 09-01-2005, 06:01   #4 (permalink)
Backyard Mechanic
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Re: idles rough to backyard mech

"pad" <karen.reynolds107@ntlworld.com> wrote in
news:f5b451fafbbe8ebdbcd0f5521267a201@localhost.talkaboutautos.com:

> my ford escort does idle high when cold but thought this was the norm
> could you give me an idea what it should idle at when cold.
>


no higher than 1500 or so just for a second or two... then gradually down.
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Old 09-01-2005, 19:01   #5 (permalink)
nospam.clare.nce@sny.der.on.ca
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Re: idles rough to backyard mech

On Thu, 01 Sep 2005 12:45:39 GMT, Backyard Mechanic
<pettyfog@yaywho.com> wrote:

>"pad" <karen.reynolds107@ntlworld.com> wrote in
>news:f5b451fafbbe8ebdbcd0f5521267a201@localhost.talkaboutautos.com:
>
>> my ford escort does idle high when cold but thought this was the norm
>> could you give me an idea what it should idle at when cold.
>>

>
>no higher than 1500 or so just for a second or two... then gradually down.



Is this by chance a 2.0 litre engine???
They have a very NASTY tendancy to drop #4 exhaust valve seat. If you
have a rough idle problem do a compression test. If one cyl is low
(likely #4) try tapping the top of the valve with the rocker at zero
lift and see if the valve stem "pops" up. If it does it is an almost
sure sign you have a loose seat. If it drops far enough to let the
piston smack the valve, breaking the seat, about 5 secons of running
will have peices of valve seat distributed through at leat 3 of the 4
cyls, totaling the head and pistons.
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