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Topic: high idle (Read 728 times) |
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davidberryman
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Help please anyone! 2.3 ultima, purchased after head gasket failure (new gkt fitted), when got home overheated, fan relay and split inlet manifold, replaced all and cut-off loom, and more recently fuel tank.....thinking she's ready took in for mot, failed on high idle 12500 and emmisions..checked for air leak could not find anything, spent 60.00 with main dealer today they could not find cause...but, they suggested rechecking manifold and the fact that the ecu would only go 75% of the way thru self tests (they dont know why!)..
Drives ok but cannot idle in drive or reverse without hunting...i have just stripped off manifold etc cleaned up and reassembled meticulously...still revs at 12500, no noises obvious (Ford tech said he could hear high pitched whistle)..........Any advise greatly appreciated
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davidberryman
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Re: high idle
« Reply #1 on: Apr 21st, 2007, 8:47am » |
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OK, HAVE CHECKED ALL VACUUM PIPES INC 'T' PIECE, SWOPPED AND CLEANED IACV, CLAMPED OFF EGR PIPE, CHECKED ALL EVAP PIPES, SWOPPED CAM SENSOR, RESET TPS BY DISCONNECTING BATTERY ETC, NOTHING SEEMS TO CHANGE ENGINE NOTE OR IDLE RPM. FORD TESTED HEGO SENSOR BUT I AM CONSIDERING CHANGING ANYWAY, CLEANED THROTTLE BODY AND MAF, SPARK PLUGS LOOK FINE AND HAS NEW COILS....IS THER ANYTHING EXHAUST SIDE OF BLOCK (HAVEN'T DISTURBED THIS SIDE) THAT I NEED CHECK?......I AM NOW AT THE POINT OF REPLACING EEC1V ETC BUT DON'T WANNA DO THAT UNTIL EXHAUSTED ALL OTHER AVENUES
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tintin
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Re: high idle
« Reply #2 on: Apr 21st, 2007, 10:05am » |
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a long shot, but check the idle control valve is on the right way round, a garage had put mine back on back-to-front, caused the throttle to "stick" at about 1500rpm every rev (although mine dropped after 10 secs). that was on a cossie.....
visual check to the pics on the sight?
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'95 Cosworth Ultima
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davidberryman
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Re: high idle
« Reply #3 on: Apr 21st, 2007, 8:23pm » |
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thanks tintin i have checked and cleaned iacv made no difference.
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scorpio_man
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Ford Kuga awd
Posts: 5654
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Re: high idle
« Reply #4 on: Apr 21st, 2007, 8:27pm » |
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hi there
have you got traction control? maybe sticking on the trottle cable. same with the cruise control.
hth
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davidberryman
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Re: high idle
« Reply #5 on: Apr 21st, 2007, 8:32pm » |
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believe it does have traction control and def has cruise...would this be the 'second' cable at throttle body that goes off to a body in grill scorpio_man ?
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davidberryman
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Re: high idle
« Reply #7 on: Apr 21st, 2007, 8:51pm » |
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ok, now don't think i have TC, i have released and reset throttle cable and during idle the cruise cable is slack at quandrant so i don't think its holding up throttle, what i have noticed is that the idle is lower with TPS by about 100 rpm, i have disconnected battery and TPS to re-synch it but still 1200 idle. Thanks a lot
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scorpio_man
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Ford Kuga awd
Posts: 5654
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Re: high idle
« Reply #8 on: Apr 21st, 2007, 9:01pm » |
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hi there
you could try taking the tps off the throttle body, but leave it connected. can't remember if it has a gasket or not. see if that does anything. 
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solarpanel
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Re: high idle
« Reply #10 on: Apr 24th, 2007, 10:06pm » |
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just a thought,under iacv make sure the manifold is whole mine had melted so the car would not idle at 850 rpm
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davidberryman
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Re: high idle
« Reply #11 on: Apr 26th, 2007, 7:55pm » |
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As usual your advise has been excellent, having given up personally as i cannot do wiring/sensor tests, i have given car to a Specialist here in Norwich Clive Atthowe. Along with copies of all your advise re TPS Scorpio-man, did check under Iacv Solarpanel but probably not well enough i will recheck.
Thanks again for all input guys i will keep you informed.
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davidberryman
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Re: high idle
« Reply #12 on: Apr 28th, 2007, 11:54am » |
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Collected car from specialist, could not fault electronics/sensors etc, following vacuum checks at idle it is suggested valve timing out...
Possible that person who replaced head gasket did not recheck timing on reassembly..
Guess what i'm doing weekend!
Keep you informed
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v4-max aka Cheekyboy1
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focus cc mk3 mondeo 2.0 auto cbx750 vt600
Posts: 563
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Re: high idle
« Reply #13 on: Apr 28th, 2007, 12:21pm » |
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you have alot more patience than me my friend good luck 
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davidberryman
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Re: high idle
« Reply #14 on: May 1st, 2007, 12:07pm » |
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At last a resolve.......stripped top cover off and cam plate, left camshaft (exhaust) 1 tooth out, after checking three times i was lucky enough to pull off pulley and move cam enough to prevent renewal of tensioner etc........Happy yes but not impressed with FMD having told #em disconnection of CPS was the only thing that made a difference they never concidered checking timing..
I now have an MOT certificate.
Thanks again all
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