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Fiesta-Si.com • View topic - Lumpy idle
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Tiababy
 Post subject: Lumpy idle
PostPosted: Sat Feb 05, 2011 8:12 pm 
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What's the usual cause of a lumpy idle?

Picked up the 2.0 and it's very nice. Only issues with it is a lumpy idle and no temp gauge.
I'll probably take the thermostat off my 1.6 as the car is using the fan when it gets hot.

Also where is the ECU as wasn't sure if it's got a 1.6 or 2.0 ECU in it which could be the idle issue (running lean maybe)

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1 way to sum up the 197 is like sex, you build upto the best bit and when it eventually happens it only last a few seconds but you always want to do it again!
Poor Orange Si is hurt. Started first time after sitting for 3 weeks and with virtually no petrol in it
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stuff n that
 Post subject: Re: Lumpy idle
PostPosted: Sat Feb 05, 2011 8:32 pm 
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look up in the passenger side footwell and u shud be able to see the ecu code :thumbsup:

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Tiababy
 Post subject: Re: Lumpy idle
PostPosted: Sat Feb 05, 2011 8:35 pm 
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Cool will do tomorrow and post it :)

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1 way to sum up the 197 is like sex, you build upto the best bit and when it eventually happens it only last a few seconds but you always want to do it again!
Poor Orange Si is hurt. Started first time after sitting for 3 weeks and with virtually no petrol in it
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stuff n that
 Post subject: Re: Lumpy idle
PostPosted: Sat Feb 05, 2011 8:40 pm 
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ur lumpy idle problem is probly a fooked temp sensor as this affects fueling and u say ur temp gauge isnt working, hope this helps :thumbsup:

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Tiababy
 Post subject: Re: Lumpy idle
PostPosted: Sat Feb 05, 2011 8:44 pm 
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Ah cool, where is that situated on the car?

The fan is coming on and cooling it all and I have the part to hand if I can find it on my car :D

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1 way to sum up the 197 is like sex, you build upto the best bit and when it eventually happens it only last a few seconds but you always want to do it again!
Poor Orange Si is hurt. Started first time after sitting for 3 weeks and with virtually no petrol in it
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stuff n that
 Post subject: Re: Lumpy idle
PostPosted: Sat Feb 05, 2011 8:58 pm 
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its on the thermostat housing but if the fan is coming on then i dont think it will be that. wen was it last serviced do u know?

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Chris
 Post subject: Re: Lumpy idle
PostPosted: Sat Feb 05, 2011 9:35 pm 
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Maybe its cammed. :)

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Tiababy
 Post subject: Re: Lumpy idle
PostPosted: Sat Feb 05, 2011 10:57 pm 
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Well I'll change that anyway can't hurt :)
Not sure when last serviced but went through it's mot in December.

Cammed?

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1 way to sum up the 197 is like sex, you build upto the best bit and when it eventually happens it only last a few seconds but you always want to do it again!
Poor Orange Si is hurt. Started first time after sitting for 3 weeks and with virtually no petrol in it
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Tiababy
 Post subject: Re: Lumpy idle
PostPosted: Sat Feb 05, 2011 11:59 pm 
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Nevemind appears the MAF was crap. Unplugged it and its idle was fine.
Will take the MAF off of my other si with the filter tomorrow and try that :)

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1 way to sum up the 197 is like sex, you build upto the best bit and when it eventually happens it only last a few seconds but you always want to do it again!
Poor Orange Si is hurt. Started first time after sitting for 3 weeks and with virtually no petrol in it
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32coupe
 Post subject: Re: Lumpy idle
PostPosted: Sun Feb 06, 2011 11:21 am 
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Fezzyzetec
 Post subject: Re: Lumpy idle
PostPosted: Sun Feb 06, 2011 1:24 pm 
could be the temp gauge sender which is located under the thermostat remove the top rad hose and you will see it the top one is the temp sensor and the only way to tell if its cammed is whip the rocker cover off and take a look at the code on the end of the cams
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Chris
 Post subject: Re: Lumpy idle
PostPosted: Sun Feb 06, 2011 1:43 pm 
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:lol: she's figured out its the MAF already..

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Tiababy
 Post subject: Re: Lumpy idle
PostPosted: Sun Feb 06, 2011 2:40 pm 
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Well I cleaned up the current MAF and changed over to my k&n.
It's running a bit better but it's still lumpy but rather them idle if 500-600rpm and almost stalling it's starts steady at 1500rpm then dips and goes up and down between 900-1000rpm so it'll do until I can replace it :)

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1 way to sum up the 197 is like sex, you build upto the best bit and when it eventually happens it only last a few seconds but you always want to do it again!
Poor Orange Si is hurt. Started first time after sitting for 3 weeks and with virtually no petrol in it
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Tiababy
 Post subject: Re: Lumpy idle
PostPosted: Sun Feb 06, 2011 2:59 pm 
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_________________
1 way to sum up the 197 is like sex, you build upto the best bit and when it eventually happens it only last a few seconds but you always want to do it again!
Poor Orange Si is hurt. Started first time after sitting for 3 weeks and with virtually no petrol in it
Top
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Reply with quote  
32coupe
 Post subject: Re: Lumpy idle
PostPosted: Sun Feb 06, 2011 3:07 pm 
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ooooh new bits any plans you wanna share
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Tiababy
 Post subject: Re: Lumpy idle
PostPosted: Sun Feb 06, 2011 4:13 pm 
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Rad and fan are up next so I can change the thermostat etc then.
Also going to give the coolant holder a clean up :)

The maf in the boot that's a 1.6 one isn't it?
It appears to be identical to the one off of my old car.

_________________
1 way to sum up the 197 is like sex, you build upto the best bit and when it eventually happens it only last a few seconds but you always want to do it again!
Poor Orange Si is hurt. Started first time after sitting for 3 weeks and with virtually no petrol in it
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32coupe
 Post subject: Re: Lumpy idle
PostPosted: Sun Feb 06, 2011 4:42 pm 
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yeah i think it is
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onslack
 Post subject: Re: Lumpy idle
PostPosted: Sun Feb 13, 2011 4:20 pm 
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just leave the maf off, my mk2 runs fine with out it :lol:

but as said if youve got a 2.0 ecu, injectors etc, then a 1.6 maf will make it run like a bag of shite!

but as said it could also be the temp sensor on top of the stat or a timing issue

did you find out what ecu its running?
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32coupe
 Post subject: Re: Lumpy idle
PostPosted: Sun Feb 13, 2011 6:47 pm 
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pretty sure its 2ltr ecu but not 100%
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onslack
 Post subject: Re: Lumpy idle
PostPosted: Sun Feb 13, 2011 8:07 pm 
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DEEP, DESK or DEWY is what you need ;)
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