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Old 01-02-2003, 06:11   #1 (permalink)
MK2 Escort 1300GT
 
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BaD Idle

Today while at the lights everytime the EA would idle form around 900rpm to 100 back and fort and battery light comes on and off. Timing is spot on. so far iam stumped. We tried givin her some stick down a road. fixed it for awhile but nope still the same. I dont like giving my baby stick shes to good haha. tnx guys
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Old 01-02-2003, 13:41   #2 (permalink)
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Try replacing the MAP sensor. A faulty one will cause a bad idle.
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Old 01-03-2003, 03:42   #3 (permalink)
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another thing that will cause this is the ISC motor (stands for idle speed control) its located on the throttlebody

i have this problem on my 5litre and its a bloody pain when ya start it and it stalls, start stall.

i have worked out how to drive it like this tho (it aint good for the brakes tho...) when its cold it will do this really bad i have to two-foot it to keep it going i hold it at 1000rpm and its fine when warm it almost always wont do it.

ive been told to take the ISC off and pull it apart, and clean it out with petrol. i just havent had the time to do it yet
i might have a look this weekend
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Old 01-03-2003, 15:39   #4 (permalink)
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My Gawd i have the exact same problem.
We replaced:

MAP sensor
Oxygen sensor
Computer
Injectors
Thermostat

I have noticed this is definitely temperature related problem, have you noticed this also ? Also this only began to happen after I got my DEV3, it doesnt always happen but it is very annoying when it does.
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Old 01-03-2003, 16:27   #5 (permalink)
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Timing is never really going to be a problem the EA onwards dizzy can change it's timing +/- 30degrees.
It's most likely your map sensor there found on the firewall on the passanger side there a small box with a wire clip and a vacum hose on them. I had the same problem and my car was pinging a little as well. Brand new genuine ford ones are $160, third party ones are 100 and a second hand one is about $20
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Old 01-04-2003, 07:01   #6 (permalink)
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Yep when its hot its does bad idle. a new ISC sensor is $140 from ford expensive. its not good like today i put her into reverse shes a manuel, put clutch in boom shes dies idles around 200 sometimes. So can the ISC thing be cleaned i might have a go at that.
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Old 01-04-2003, 18:49   #7 (permalink)
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I got same problem. Been told the ISC packs it in intermitently (?spelling), so it can be good for a while (i.e. when a mechanic is looking at it) then turn to poo. Get it pulled apart n cleaned, dunno how much it'll cost to get someone to do, got told it's sort of easy to do. If that doesn't work, grab a new sensor thing.
Bloody anoying but. Specially when i got holden fans along for a ride, even worse if they're chicks, anti ford sayings spew from their mouth

Good luck
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Old 01-04-2003, 19:05   #8 (permalink)
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Quik question........... is it ok to drive longish distances while this is happening? Wont kill something and leave me stuck somewhere?
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previous rides;
1st car EA Fairmont Ghia, extractors, exhaust
2nd EF GLi, 'custom' interior, extractors, exhuast
3rd EA Fairmont 5spd, low'd, extractors, exhuast, head
work, 3.45LSD, EL dash, interior+ El ECU
4th EB2 Fairmont, EL dash and interior, BBM, LSD etc etc
5th EB Fairmont Ghia 5L. All leather, lowered, exhaust etc
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Old 01-07-2003, 04:17   #9 (permalink)
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Hey I am a newbie, but i actually cleaned the ISC today. Some degreaser and wipe down (instructions off the FordMods site)
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Old 01-07-2003, 04:20   #10 (permalink)
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... the results were noticeable... just do it on a nice sunny day so u can let the excess fluid evaporate in the sun.

It's just a nuisance coz u have to take the air filter cover off and dismantle it within confined spaces.

But the results are worth it... just takes time.
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