Guest dom.mayte@gmail.com Posted August 26, 2013 Share Posted August 26, 2013 Hi there I'm sorry if I'm asking a new question I am new ish to the cvh engine! Been a rwd classic ford man for a while now! Got myself a xr3i 1990 efi! Had a bad misfire solved that, now it cuts out at junctions probably the iscv I have learnt but... There is one pipe coming off the efi unit which goes to fresh air! Surly this isn't right? Tried blocking it up sometimes it cuts the engine, then I noticed a plug which also went nowhere? It's almost like a sensor is missing.... Help please! Thanks from a newbie Dom Quote Link to comment Share on other sites More sharing options...
Guest dom.mayte@gmail.com Posted August 26, 2013 Share Posted August 26, 2013 It's almost completely opposite the pipe that goes to the map sensor! Hope this helps I'm stuck here Quote Link to comment Share on other sites More sharing options...
Guest mass1v Posted August 26, 2013 Share Posted August 26, 2013 Hi has it got the isc valve on the air box or on the side of the efi unit like mine ? Quote Link to comment Share on other sites More sharing options...
Guest mass1v Posted August 26, 2013 Share Posted August 26, 2013 If it has the valve on the air box you should have one blanked off pipe as mine and a pipe the size of you thumb going to the iscv . Quote Link to comment Share on other sites More sharing options...
Guest dom.mayte@gmail.com Posted August 26, 2013 Share Posted August 26, 2013 (edited) Here is some pictures! the idle control valve is on the EFI unit the airbox has nothing! Edited August 26, 2013 by dom.mayte@gmail.com Quote Link to comment Share on other sites More sharing options...
Guest dom.mayte@gmail.com Posted August 26, 2013 Share Posted August 26, 2013 (edited) sorry not sure how to put photos on here! what a pain  https://www.facebook.com/photo.php?fbid=10152154613245760&set=pcb.10152154613825760&type=1&theater   https://www.facebook.com/photo.php?fbid=10152154613520760&set=pcb.10152154613825760&type=1&theater  there we go! 1st one is of the pipe and the mystery plug, second one is the pipe thanks Edited August 26, 2013 by dom.mayte@gmail.com Quote Link to comment Share on other sites More sharing options...
Guest dom.mayte@gmail.com Posted August 26, 2013 Share Posted August 26, 2013 (edited) . Edited August 26, 2013 by dom.mayte@gmail.com Quote Link to comment Share on other sites More sharing options...
allblue Posted August 26, 2013 Share Posted August 26, 2013 Hi  The mystery plug is for the iscv, when this valve was originally fitted onto the airbox. you car has the factory revision for iscv placement, so this plug is not required.  The pipe that is sticking out looks like someone had tried to plug up the hole. You should have a black blanking cover there, similar to the one in mass1v's photo. As long as that hole is covered properly than that is unlikely to be the problem.  Stalling at junctions is a common efi issue and is usually cured by decarbonising the iscv and base idle screw port. Quote Link to comment Share on other sites More sharing options...
Guest dom.mayte@gmail.com Posted August 26, 2013 Share Posted August 26, 2013 Thanks for the help guys! Cleaned the iscv today clean as a whistle! Made a big difference, where is the Base idle screw port? Il do that next, but I have a sneaky feeling there's a cheeky airleak somewhere not helping the situation, and found today someone had drilled the airbox and removed the air filter! Not good! Quote Link to comment Share on other sites More sharing options...
Guest dom.mayte@gmail.com Posted August 26, 2013 Share Posted August 26, 2013 P. S the car has been stood for over 2 years! Done the usual flushing and service, all problems so far seem to be a build up of crud! Quote Link to comment Share on other sites More sharing options...
maido Posted August 26, 2013 Share Posted August 26, 2013 (edited) it looks like somebody has swapped the pipes around, the one you have thats not connected is normally on the map sensor side (coming out the right side off efi and into map sensor)... then just blank the left pipe a bolt in the end of pipe and jubliee clip will do the trick lol search google images for xr3i efi engine some good pics to look at Edited August 26, 2013 by maido Quote Link to comment Share on other sites More sharing options...
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