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#1 coll247

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Posted 21 March 2010 - 09:11 PM

hi all i have a 99 t plate focus what im wanting to know if anyone can help is does the engine shake a little when idling and it can be felt through the car checked engine mounts idle sensor been cleaned out what is the idle speed it says 700+30 in the haynes manual. but where on the rev counter does the needle go its about the first line under the 1000 mark. when you put your ear next to the fuel pressure reg its making a noise could they block up. car as been stood a bit its done 82600 at the min. its had a service at 80000 timing belt kit done bought the car about 2 months since any help would be appreciated thanx !!!!

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#2 eghamhigh

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Posted 22 March 2010 - 07:28 PM

Hi - could it be the ignition coil? My car has been idling rough for a while - has 92K and is regularly serviced and it suddenly started juddering whilst I was driving it this week. Called the RAC as I am a member and he put in a new coil and end of problem. RAC also changed the spark plugs and HT leads but that was because it was part of a kit. 99. There are various tests you can do to check but you need to google them.

#3 artscot79

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Posted 22 March 2010 - 09:11 PM

Hi - could it be the ignition coil? My car has been idling rough for a while - has 92K and is regularly serviced and it suddenly started juddering whilst I was driving it this week. Called the RAC as I am a member and he put in a new coil and end of problem. RAC also changed the spark plugs and HT leads but that was because it was part of a kit. 99. There are various tests you can do to check but you need to google them.



the zetec isnt a smooth idler anyway so a tiny shake is normal depends how bad the shake is to be honest idle is correct 670-730rpm i know it seems low but thats what it is do the dash trick it will tell you what the exact apeed is youll find the how to on the sticky at the top of the forum check all pipes for splits especially the one at the rear of the engine under the throttle body see if its collapsing when the engines running also pcv valve could cause the shudder

#4 coll247

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Posted 23 March 2010 - 01:08 AM

the zetec isnt a smooth idler anyway so a tiny shake is normal depends how bad the shake is to be honest idle is correct 670-730rpm i know it seems low but thats what it is do the dash trick it will tell you what the exact apeed is youll find the how to on the sticky at the top of the forum check all pipes for splits especially the one at the rear of the engine under the throttle body see if its collapsing when the engines running also pcv valve could cause the shudder



#5 coll247

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Posted 23 March 2010 - 01:16 AM

you can tell its there you can see the engine shaking.my inlet manifold is at the front.their is no pipe round the back of the engine

#6 artscot79

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Posted 23 March 2010 - 07:10 PM

you can tell its there you can see the engine shaking.my inlet manifold is at the front.their is no pipe round the back of the engine



then the pcv valve is at the front somewhere i think youre best bet is to check for leaks from any of the hoses you may be needing a new coil pack new leads and plugs

#7 coll247

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Posted 23 March 2010 - 11:14 PM

Hi. pcv valve is ok.checked it today. and no leaks. it dies more when i put the lights and heated rear window on. i will try the coil pack at the weekend. let you know how i get on.

#8 artscot79

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Posted 24 March 2010 - 01:52 PM

Hi. pcv valve is ok.checked it today. and no leaks. it dies more when i put the lights and heated rear window on. i will try the coil pack at the weekend. let you know how i get on.



the rear window is a high current draw item so it will die momentarily or should i say the speed will drop slightly then pick up again to normal as the voltage regulator increases the load it could be an idle control valve that you have an issue with

#9 wijcc

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Posted 24 March 2010 - 03:41 PM

I would say try cleaning the idle control valve/EGR valve.
Check for whether your car needs the PCM update, there is a known bug which results in the eratic idle. Updating the ECU can solve this.
Also check your battery

#10 coll247

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Posted 24 March 2010 - 08:30 PM

I would say try cleaning the idle control valve/EGR valve.
Check for whether your car needs the PCM update, there is a known bug which results in the eratic idle. Updating the ECU can solve this.
Also check your battery

idle control valve is ok. it does not have a egr valve. battrey is ok too

#11 coll247

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Posted 24 March 2010 - 08:39 PM

I would say try cleaning the idle control valve/EGR valve.
Check for whether your car needs the PCM update, there is a known bug which results in the eratic idle. Updating the ECU can solve this.
Also check your battery

how much does the PCM update cost. and can it only be done a ford.

#12 artscot79

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Posted 24 March 2010 - 08:46 PM

how much does the PCM update cost. and can it only be done a ford.



the pcm only applies if youre rpm at idle drop below 500 and cause the car to stall or whgen you slow down at a junction and the revs drop very low causing the car to stall in basics 80 quid for the diagnostic then another 150-200 for the pcm upgrade if you were effected you woul;d have had a recall youre revs are 700 or more so why would you need the pcm done you are idling at exactly what you should be you switch the rear heater on and it drops then picks up thats normal the more electrics yopu hgave on the more strain on the alternator trust me the pcm has npthing to do with it it had nowt to do with rough idle and was about cars idling so low they stalled alll the time the pcm raised there idle back up to 700 rpm

from bba reman....Ford Focus 1999Problem: Engine sometimes stalls.

Solution: The PCM may have incorrect calibration parameters. Don't assume the vehicle calibration is the problem. Use a diagnostic scanner to perform a full engine diagnostic. If this doesn't resolve the problem, re-program the module. The calibration amendments are loaded onto Ford Dealer CD28a and will prevent the vehicle from stalling.



#13 coll247

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Posted 24 March 2010 - 09:23 PM

the pcm only applies if youre rpm at idle drop below 500 and cause the car to stall or whgen you slow down at a junction and the revs drop very low causing the car to stall in basics 80 quid for the diagnostic then another 150-200 for the pcm upgrade if you were effected you woul;d have had a recall youre revs are 700 or more so why would you need the pcm done you are idling at exactly what you should be you switch the rear heater on and it drops then picks up thats normal the more electrics yopu hgave on the more strain on the alternator trust me the pcm has npthing to do with it it had nowt to do with rough idle and was about cars idling so low they stalled alll the time the pcm raised there idle back up to 700 rpm

from bba reman....Ford Focus 1999Problem: Engine sometimes stalls.

Solution: The PCM may have incorrect calibration parameters. Don't assume the vehicle calibration is the problem. Use a diagnostic scanner to perform a full engine diagnostic. If this doesn't resolve the problem, re-program the module. The calibration amendments are loaded onto Ford Dealer CD28a and will prevent the vehicle from stalling.

The engine does,nt stall it idles ok. it just shudders like when you draw power from the battery.

#14 coll247

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Posted 24 March 2010 - 09:40 PM

could it be the battery has it says it should be a calcium one on the halfords website

#15 coll247

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Posted 24 March 2010 - 09:42 PM

the batterys charging as it should be

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