escort 98 petrol ,idle air probs

my escort idles up at aprox 1250rpm,now replaced iacv but just the same,no
air leaks and the tps is ok,as battery voltage going to the iacv,when i
dissconnect the iacv it idles fine,but wont idle if disconnected wen
cold.any ideas ????????

assume you are saying the PCM is holding the idle high, and disc'g the
connector lets it idle ok.

Have the codes read.

--
Yeh, I'm a Krusty old Geezer, putting up with my 'smartass' is the price
you pay..DEAL with it!

iacv = same as 'iscv' - idle speed control valve?

get a replacement from a scrapyard sounds like a good starting point, you
seem to know it's the problem! Unless in reality another sensor is
misreading information from it....

tried an ecu reset? disconnect battery for 10 minutes, reconnect, go drive
lightly for a while, then hard, then go sit in in park and idle it for 10
minutes, then voila, ecu has re-learned.

its a new iscv and ive tried disconnecting bat overnight.had it plugged in
and no codes found.

would be so much easier to fix a low idling problem.getting desperate
now,got loads of new sensors but no joy

save yourself hours of time and buy genuine parts when it comes to engine
management,i bought a copy iscv and after hours of searching for other
causes it turned out to be the new part i replaced,so i bought a new
GENUINE FORD iscv and it cured my vehicle.

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1 7th February 16:56 muckymits External User Posts: 1	escort 98 petrol ,idle air probs my escort idles up at aprox 1250rpm,now replaced iacv but just the same,no air leaks and the tps is ok,as battery voltage going to the iacv,when i dissconnect the iacv it idles fine,but wont idle if disconnected wen cold.any ideas ????????

2 7th February 16:57 backyard mechanic External User Posts: 1	escort 98 petrol ,idle air probs assume you are saying the PCM is holding the idle high, and disc'g the connector lets it idle ok. Have the codes read. -- Yeh, I'm a Krusty old Geezer, putting up with my 'smartass' is the price you pay..DEAL with it!

4 7th February 18:39 muckymits External User Posts: 1	escort 98 petrol ,idle air probs its a new iscv and ive tried disconnecting bat overnight.had it plugged in and no codes found.

5 7th February 18:40 muckymits External User Posts: 1	escort 98 petrol ,idle air probs would be so much easier to fix a low idling problem.getting desperate now,got loads of new sensors but no joy

6 7th February 22:28 muckymits External User Posts: 1	escort 98 petrol ,idle air probs save yourself hours of time and buy genuine parts when it comes to engine management,i bought a copy iscv and after hours of searching for other causes it turned out to be the new part i replaced,so i bought a new GENUINE FORD iscv and it cured my vehicle.