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Topic: Autobox and iddle (Read 686 times) |
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Octavian_P
Senior Member
 
 
Posts: 1126
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Autobox and iddle
« on: Nov 22nd, 2006, 7:30am » |
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Hello
Well i have encounterd the first cossie problem 
I have noticed that when i stop at the trafic lights....sometimes the engine would seem it's about to stall for a few moments, then it's back to normal.
Another thing i have noticed, is that when i select reverse, it engages whith a slight thump. I have checked the oil (which was changed along with the filter about 20.000 km ago), it's not verry reddish but it smels mineral, no burnt stuff. Beside this it changes wonderful and no OD flashing. MAF is also clean
The bad thing was that today when i selected reverse the engine stalled.... 
With what sould i start ? IACV ??
Cheers
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2.0 16V Ultima|2.3 16V Ghia|2.9 24V Cosworth Ghia
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cossieguy
Full Member
1996 Cosworth Ultima saloon
Posts: 550
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Re: Autobox and iddle
« Reply #1 on: Nov 22nd, 2006, 7:38am » |
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Had similar problem about 2 months ago cossie would stall when reversing and wouldn't start stright away. Had to take keys out of ignition and put them back in then car would start 
Cleaned MAf and iacv and (Touch wood) hasn't happened since. So if your MAf is clean would suggest that you try IACV. Other idling problems developed some weeks later so changed IACV for brand new one and (Bang head against wood) idle is lovely.
Good luck
Guy.
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TiberiuS
Senior Member
Ex. 1996 2.3 Ultima - RIP P789 KHJ
Posts: 2257
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Re: Autobox and iddle
« Reply #2 on: Nov 22nd, 2006, 1:43pm » |
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I'm not an autobox expert (wish I was  ) but I've driven a few cars with bad boxes and in my experience the faults manifest on both forward and reverse when the box is wearing out with age. Stalling is a driving concern though, are you sure it's gearbox related and not something on the engine causing it?
Another fluid change+filter couldn't hurt it, especially if the car has been standing for some time, way cheaper than hauling the autobox out 
Regards, Bruce
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Bruce - '07 Jaguar XKR coupe, '95 Jaguar XJ Sport 4.0, '82 Ford Capri 2.0 Ghia, '15 Honda Civic (sloooooww..)
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Dave2302
Senior Member
2006 Mercedes S55 AMG, Retired Barefoot Waterskier
Posts: 1119
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Re: Autobox and iddle
« Reply #3 on: Nov 22nd, 2006, 6:20pm » |
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Hi,
I doubt this is transmission related. 
It sounds like an idle concern, maybe IACV, dodgy EGR, Vac Pipe Split, Air Leak etc etc. Get it to idle silky smooth before worrying about the gearbox.
They often give a slight thump in reverse but go on for years.
Regards,
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Dave "The 'ol Bear" ex Footer !
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Octavian_P
Senior Member
Posts: 1126
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Re: Autobox and iddle
« Reply #4 on: Nov 22nd, 2006, 8:02pm » |
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Thank you all for the tips, i'll go arm myself with the trusty carb-cleaner can....and see what's the IACV doing
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2.0 16V Ultima|2.3 16V Ghia|2.9 24V Cosworth Ghia
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Dave
Senior Member
Tourmallard 24v (ex-owner)
Posts: 1984
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Re: Autobox and iddle
« Reply #5 on: Nov 22nd, 2006, 10:52pm » |
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Might be worth giving the throttle body a clean with the old magic can too Helped my car no end
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Life after the Scorpio ain't easy..
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Simmo
Administrator
I'm an OAP !
Posts: 5508
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Re: Autobox and iddle
« Reply #6 on: Nov 23rd, 2006, 7:51am » |
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Re the idle problem. I had exactly those symptoms and cleaned the IACV a number of times and replaced it with one from a car which was running ok but the fault continued. Eventually bought a new one .....cured!.
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Now I'm an OAP
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clarkster
Junior Member
Dear Santa, could I have a plasma cutter, please?
Posts: 57
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Re: Autobox and iddle
« Reply #7 on: Nov 26th, 2006, 1:58pm » |
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My 24v is doing a sort of lumpy chug when you hold it on the brakes in drive, sounds very similar to this problem. Some times it doesnt like to reverse uphill either. Im almost certain its engine related rather than gear box. Im thinking along the lines of a faulty HO2 sensor or fuel pressure regulator?
Let me know how you get on, it will be interesting to see if is the same fault!
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Octavian_P
Senior Member
Posts: 1126
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Re: Autobox and iddle
« Reply #8 on: Nov 27th, 2006, 7:56am » |
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Hello to all
Had huge amounts of work to do and in the week end i was out of town in the 2.3
Cossie staied home because of a bad tyre problem....
In a day or two i'll start dismanteling the iacv, throttle plates, spark plugs and maybe the injectors as well...
Well keep you posted on the progress
Cheers
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2.0 16V Ultima|2.3 16V Ghia|2.9 24V Cosworth Ghia
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Octavian_P
Senior Member
Posts: 1126
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Re: Autobox and iddle
« Reply #9 on: Dec 3rd, 2006, 9:02pm » |
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OK, today finnaly did the IACV-clen up, also added some light oil. Just keeping my fingers crossed that from now on the iddle will be nice to me.
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2.0 16V Ultima|2.3 16V Ghia|2.9 24V Cosworth Ghia
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Octavian_P
Senior Member
Posts: 1126
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Re: Autobox and iddle
« Reply #10 on: Dec 6th, 2006, 12:39am » |
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Hmm, today i took the cossie for a little ride, when i was starting to enjoy the smooth iddle it did it again, brrrbp...brrrpb....very eradic iddle. This time it happend that the car was out of gear, in N, so the autobox is fine (one possible problem sorted), now all i have to figure is what is happening to it. Porbably i'll take the butterfly's out but looks that a lot of dismanteling has to be done to the intake mainfolds. Also i do not have a garage and the wheater is a bit to cold to wiggle it around.
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2.0 16V Ultima|2.3 16V Ghia|2.9 24V Cosworth Ghia
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