the_ace Posted November 23, 2009 Share Posted November 23, 2009 I've been trying to get to the bottom of my Focus 1.8 16v revving up during slowing down for junctions etc and i thought that this sensor looks as if it shouldn't be sitting out on its own. It has a thread on it so i assume it must go somewhere? Any ideas? its the brass/copper thing attached to the side of the battery housing. Quote Link to comment Share on other sites More sharing options...
thesilverfox Posted November 23, 2009 Share Posted November 23, 2009 I've been trying to get to the bottom of my Focus 1.8 16v revving up during slowing down for junctions etc and i thought that this sensor looks as if it shouldn't be sitting out on its own. It has a thread on it so i assume it must go somewhere?Any ideas? its the brass/copper thing attached to the side of the battery housing. Isn't the idle control valve (ICV) responsible for the high revs when slowing down? I believe it was common on the MKI pre-facelift. Quote Link to comment Share on other sites More sharing options...
SierraYankee99 Posted November 23, 2009 Share Posted November 23, 2009 Isn't the idle control valve (ICV) responsible for the high revs when slowing down? I believe it was common on the MKI pre-facelift. Correct Quote Link to comment Share on other sites More sharing options...
the_ace Posted November 23, 2009 Author Share Posted November 23, 2009 I pulled that off and cleaned and refitted it on saturday, i may end up replacing it with a new one. Anyone know if that sensor is where it should be? It just doesn't look right! Quote Link to comment Share on other sites More sharing options...
SierraYankee99 Posted November 23, 2009 Share Posted November 23, 2009 The pics so small I cant even see what you're talking about Quote Link to comment Share on other sites More sharing options...
the_ace Posted November 24, 2009 Author Share Posted November 24, 2009 Anyone know what this is? I don't know how to load up a bigger pic, its the brass bit next to the battery box. You can't miss it. Quote Link to comment Share on other sites More sharing options...
artscot79 Posted November 24, 2009 Share Posted November 24, 2009 Anyone know what this is? I don't know how to load up a bigger pic, its the brass bit next to the battery box. You can't miss it. thats not the idle ontrol ive looked at mine and cant see that anywhere idle control i believe is on the carburettor no idea what that brass thing is if its even a sensor Quote Link to comment Share on other sites More sharing options...
InstructorPiggy Posted November 24, 2009 Share Posted November 24, 2009 Hasnt gota Carb, its injection. Idle control is on the throttle body, but it seems he has had that off already. I would suspect that as your fault...however that brass thing, although I cant see it properly looks like a coolant fan sensor to me, fits in the rad. But I cant be sure, coz cant see the pic, need a closer pic. Piggy :) Quote Link to comment Share on other sites More sharing options...
gaz6076 Posted November 25, 2009 Share Posted November 25, 2009 As above, larger/closer pic req. The bad idle could also be a split air hose. With the engine running listen out for any sucking/swooshing sounds. Best heard with your head under the bonnent and giving it a little rev Quote Link to comment Share on other sites More sharing options...
the_ace Posted December 3, 2009 Author Share Posted December 3, 2009 Having a mare trying to get the pic the right size. I saw the same thing on the engine side of the battery box of this focus http://cgi.ebay.co.uk/FOCUS-WRC-CHEAP-INS-...=item2a02e893b0 Its a bigger picture and you can clearly see the sensor! Quote Link to comment Share on other sites More sharing options...
InstructorPiggy Posted December 3, 2009 Share Posted December 3, 2009 U done the idle valve yet? Quote Link to comment Share on other sites More sharing options...
the_ace Posted December 4, 2009 Author Share Posted December 4, 2009 Yeah i took it off and cleaned it out, wish ii had put a new one on though as it was a pig to get at! Got a new ICV, TPS, inlet manifold and throttle body and i'm gonna go and get a few scrapper EGR valves and try them out. I will solve this!!! Quote Link to comment Share on other sites More sharing options...
InstructorPiggy Posted December 4, 2009 Share Posted December 4, 2009 Just do the idle valve first. Dont do all what you got at same time, gota do it one by one, otherwise you wont know what it was or may cause a different problem! Quote Link to comment Share on other sites More sharing options...
the_ace Posted December 4, 2009 Author Share Posted December 4, 2009 Ford Focus 2.0 Zetec manual 1999 - 2000 Problem: Intermittent high idle and noises. Solution: The probable cause is acoustic resonance of the IAC (Inlet Air Control) system. The problem can be rectified by fitting a new revised intake manifold, distributor vacuum hose and crankcase vacuum hose. A revised intake manifold has been fitted since 08/2000. I found this on this site http://www.bba-reman.com/content.aspx?cont...s_and_solutions They reckon the manifold was changed after 08/2000 because of this problem! Quote Link to comment Share on other sites More sharing options...
the_ace Posted December 6, 2009 Author Share Posted December 6, 2009 Put on a new idle control valve yesterday then reset the ECU, still the same! I'm so close to just putting it into a garage and letting them worry about it as its doing my box in! Quote Link to comment Share on other sites More sharing options...
stef123 Posted December 6, 2009 Share Posted December 6, 2009 i dont have time to read through every reply but has anyone mention the VSS - vehicle speed sensor? Quote Link to comment Share on other sites More sharing options...
the_ace Posted December 6, 2009 Author Share Posted December 6, 2009 Theres a reciept in the service book for a VSS fitted this year so i hope its not that. I suppose its worth checking over anyway, is it attached to the gearbox? Quote Link to comment Share on other sites More sharing options...
the_ace Posted December 8, 2009 Author Share Posted December 8, 2009 New inlet manifold fitted and all vacuum hoses replaced. Problem stil there! I give up i'm buying a golf! Quote Link to comment Share on other sites More sharing options...
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