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manhole1969
 Post subject: revs
PostPosted: Thu Aug 04, 2011 6:11 pm 
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hi gang i have a st185 when its on tickover the rev keep jumping up and down any ideas please
thanks :roll:

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two_OH_five
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PostPosted: Thu Aug 04, 2011 6:40 pm 
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Location: drinking devil fuel
Car Model: ST205
air conditioning?

A bit more info would be useful

how many reve and how often
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manhole1969
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PostPosted: Thu Aug 04, 2011 6:45 pm 
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it jumps about 300 rev after warm up up and down the air con dosent work and its a 1990 parked it up one day came back and it started doing it thanks

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Nibbles
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PostPosted: Thu Aug 04, 2011 8:56 pm 
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Usually a sign of an air leak. Most common is a crack in the corrugated afm to turbo pipe.

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manhole1969
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PostPosted: Fri Aug 05, 2011 6:06 pm 
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where is that please and would it made a noise thanks

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dale
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PostPosted: Fri Aug 05, 2011 7:47 pm 
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Location: sunny sleaford- lincolnshire
Car Model: ST205
i cant totally place the 185 setup but usually the afm is a little black box with wires (the only way i can describe it) atached just after the air box
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Nibbles
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PostPosted: Fri Aug 05, 2011 11:39 pm 
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The afm bolts on the side of the airbox. The pipe in question is the large diameter S shaped one from this to the turbo intake. Because this flexes as the engine rocks on it's mounts it's quite common to crack once it gets old.

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manhole1969
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PostPosted: Sat Aug 06, 2011 7:25 am 
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thanks have a look tomorow going to watch hill climing at harwood hill thanks again

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Diceman
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PostPosted: Sat Aug 06, 2011 9:53 am 
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It is the black pipe to the left of the fuse box in the above pic. The AFM is the silver metal thing with a black plastic cap on the top and located next to the fuse box on the firewall side (nearer to cabin).

The black pipe runs from the turbo to AFM and IIRC is in 2 parts - you can see 1 part easily in the above pic.

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Nibbles
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PostPosted: Sat Aug 06, 2011 12:04 pm 
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above image as a link. Copy & paste if necessary to see it.

http://www.carlscelicagt4.20m.com/images/gt4_005.jpg

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manhole1969
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PostPosted: Sat Aug 06, 2011 4:23 pm 
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been in it today when you drive it there is a ratleing sound that comes from the engine and carnt get full boost . there is no noise when you rev it . last time there was not full boost i had a missfire had it sorted but its the rattle that is loud

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