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Rough idal 

 

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 Post subject: Rough idal
Posted: Thu Aug 27, 2009 8:48 pm 
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have a 95 ef falcon and it gets a pretty bad vibration when at idal. changed leads n spark plugs.can any one help with what could be wrong. cheers

 

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 Post subject: Re: Rough idal
Posted: Thu Aug 27, 2009 10:11 pm 
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Possibly your ISC which is bolted on top of the throttle body, take it off and spray with brake clean or crc to free it up as they get stuck from time to time which can make for a rough idle
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 Post subject: Re: Rough idal
Posted: Fri Aug 28, 2009 12:15 am 
Getting Side Ways
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if its a bad vibration, i'd say intake gasket. ISC issues will cause fluctuations in speed more than a vibration, unless it is abnormally low

 

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 Post subject: Re: Rough idal
Posted: Fri Aug 28, 2009 1:33 pm 
Oompa Loompa
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Does it sit at low rev's? Or does it fluctuate causing the rough idle?
I had the same problem with my EB until it didnt hold rev's at all but a twist of the tension screw fixed it all up
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 Post subject: Re: Rough idal
Posted: Fri Aug 28, 2009 6:41 pm 
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it sits round 600rpm to 700rpm. ill try the cleaning the ISC. if that dont work ill replace intake gasket.

 

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 Post subject: Re: Rough idal
Posted: Sat Aug 29, 2009 1:53 am 
Getting Side Ways
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Clean the throttle body as well. it will be full of yuk oil

 

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 Post subject: Re: Rough idal
Posted: Sat Aug 29, 2009 1:55 am 
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A bad idle can be cause from a few things from a dirty throttle body or a loose vac hose or something dumb like that. If it was me I would let it idle and pop ya head under bonnet to see or hear anything out of the ordinary...

 

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 Post subject: Re: Rough idal
Posted: Sat Aug 29, 2009 1:57 am 
Getting Side Ways
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Froudey wrote:
A bad idle can be cause from a few things from a dirty throttle body or a loose vac hose or something dumb like that. If it was me I would let it idle and pop ya head under bonnet to see or hear anything out of the ordinary...


like hissing, then look for vac leaks or intake gasket

 

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 Post subject: Re: Rough idal
Posted: Sat Aug 29, 2009 3:35 pm 
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jsut been out n cleaned the ISC n intake n went to listen for any vacum leaks n couldnt hear anything. but could hear very loud ticking from injectors is this normal?

 

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 Post subject: Re: Rough idal
Posted: Sat Aug 29, 2009 10:35 pm 
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ticking injectors yes, ticking lifters no

get a length of hose and stick one end in your ear and run the other along the gasket to see if you hear a slightly more distinct hissing

 

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 Post subject: Re: Rough idal
Posted: Sat Aug 29, 2009 10:39 pm 
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comp test it...could be a leaking valve....how many k's on it? do u run on LPG

 

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 Post subject: Re: Rough idal
Posted: Sun Aug 30, 2009 1:03 pm 
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its done 166,000km. nah no lpg. it onli seems to do it when its in drive put in nutral n its fine.

 

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 Post subject: Re: Rough idal
Posted: Tue Sep 01, 2009 11:50 pm 
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my wagon was doing the same took it to the mechanic he put 2 different computers in it then it got sent to the local ford dealership turned out to be a blocked injector. the idle you are describing is the exact same as what mine was doing.
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 Post subject: Re: Rough idal
Posted: Thu Sep 03, 2009 4:58 pm 
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ahh kewl i might take it down to ford 2morrow n c if they have time to have a look. heard repco sell a injector rebuild kit so if they say thats the problem then ill try that.

 

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 Post subject: Re: Rough idal
Posted: Thu Sep 03, 2009 6:31 pm 
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<$100 on ebay for reco injectors.

 

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