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Username Post: Lumpy Idle on Cold Starts        (Topic#12094)
cmmd11483 
stranger
cmmd11483
29-01-09 10:21 AM - Post#98463    


Car is '07 plate, bought Dec '07 with 12500 motorway miles on it. Now at 25,000 miles.

From day 1 when started from cold the idle would be erratic and lumpy, but it never stalled or didn't start. Once I drove off it would be fine and after a few mins the idle would be perfect again. Always had good mpg, minimal smoke, great pull and the car was very quite when warm. But eventually it was starting to get quite annoying when the car sounded so ill everytime it started up cold, so i took it in to my local fords.

The first few mornings they had it by the time they had got it in to the garage and hooked up the computer the fault had stopped. So they left it for the weekend and then took the IDS out to the car. The diagnosis was a familiar all 4 injectors needing replaced. I was very surprised as the car was great after a few mins. Anyway got the car back yesterday and they were right, the idle is now perfect, the car is a little quieter when started cold and dare I say it feels even more torquey.

All done under warranty so no expense to myself, thank fook.

Just a heads up if anyone else is suffering the same fault and still in warranty. If out of warranty I would probably have lived with it rather than fork out £1000 to get them replaced.

Cheers
2007 Mondeo ST TDCi










 
Lornce 
Lornce
Lornce
Re: Lumpy Idle on Cold Starts
29-01-09 01:58 PM - Post#98492    

    In response to cmmd11483

i have exactly the same problem, but my warranty has ran out on my car. When you say live with it, will it cause long term damage?
2005 Mondeo TDCI
Bluefin'd
JP Exhaust & Decat
Mintex Front Pads & Discs








 
cmmd11483 
stranger
cmmd11483
29-01-09 02:32 PM - Post#98497    

    In response to Lornce

I don't think so, I ran the car like this for 13 months and it certainly wasn't detrimental to the cars performance. There were no fault codes stored in the cars ecu which is why it took them a few days to diagnose the problem. I think the fuel pattern is distrupted only for a short while when the injectors are cold and this disappears when they warm up. I'm not a mechanic but so I wouldn't take my word as gospel.
2007 Mondeo ST TDCi










 
JazzyGeoff 
Pain is temporary, Pride is forever!
JazzyGeoff
29-01-09 02:36 PM - Post#98499    

    In response to cmmd11483

Mine does the same (and has done for a while) it certainly doesn't look or smell good first thing in a morning. I am taking mine to Ford to be looked at when I can get it booked in. I will let you know the outcome as/when it's been looked at.
55 ST TDCi








 
Lornce 
Lornce
Lornce
Lumpy Idle on Cold Starts
29-01-09 02:50 PM - Post#98503    

    In response to JazzyGeoff

i have just rang ford now for a quote on replacing the injectors and its £740!! Or if you know how to fit the injectors yourself, you can buy them for £177 each and when you return your old ones (because they refurbish them) you will be refunded £40 each. might just have to put up with it and hope it doesnt damage the engine.
2005 Mondeo TDCI
Bluefin'd
JP Exhaust & Decat
Mintex Front Pads & Discs


Edited by Lornce on 29-01-09 02:50 PM. Reason for edit: No reason given.







 
caigey 
Getting better
caigey
Re: Lumpy Idle on Cold Starts
29-01-09 03:42 PM - Post#98516    

    In response to cmmd11483

hi cmmd what garge did you take it to was it Coatbridge Evans Halshaw? My car is doing the same i took it into Evans at Motherwell and they said there was no fault but its the exact same problem as yours only it cold mornings and only for a few seconds.

Cheers
56 plate Euro4 Mondeo ST TDCI, 169.9 BHP 453.2 NM Torque, Wingy De-Cat, Dual exit 2.5inch Cat back stainless exhaust with 4" slashcut tails, Roverron tuning box, PiperCross panel filter, Window Tints, New Front & Rear ST badges, Embroidered ST seat badges, Pioneer bluetooth head unit, 1000w Sub, Pioneer 6x9's, 2 x 450W Amps, Rear bumper spports,Bosch Aerotwins








 
cmmd11483 
stranger
cmmd11483
29-01-09 04:11 PM - Post#98529    

    In response to caigey

Yep Evans Halshaw Coatbridge caigey.

Lornce its not just as simple as replacing them, they have to be individually calibrated to your ecu. A job for a dealer or decent garage me thinks.

If anything is seriously up with the injectors the ecu brings up fault codes and may even bring on the engine management light.
2007 Mondeo ST TDCi










 
caigey 
Getting better
caigey
29-01-09 04:59 PM - Post#98541    

    In response to cmmd11483

Might take my car to them to see what they can find. My only concern now is they might blame it on the decat and exhaust .
56 plate Euro4 Mondeo ST TDCI, 169.9 BHP 453.2 NM Torque, Wingy De-Cat, Dual exit 2.5inch Cat back stainless exhaust with 4" slashcut tails, Roverron tuning box, PiperCross panel filter, Window Tints, New Front & Rear ST badges, Embroidered ST seat badges, Pioneer bluetooth head unit, 1000w Sub, Pioneer 6x9's, 2 x 450W Amps, Rear bumper spports,Bosch Aerotwins








 
cmmd11483 
stranger
cmmd11483
29-01-09 05:05 PM - Post#98543    

    In response to caigey

You should be ok hopefully.

My ST TDCi is completely standard but I took my old Focus ST there for warranty work and the didn't even mention the proalloy intercooler or K&N CAIS, though it was for a new steering pump.

Worth a try anyway.
2007 Mondeo ST TDCi










 
Lornce 
Lornce
Lornce
Lumpy Idle on Cold Starts
29-01-09 06:01 PM - Post#98557    

    In response to cmmd11483

  • cmmd11483 Said:
Yep Evans Halshaw Coatbridge caigey.

Lornce its not just as simple as replacing them, they have to be individually calibrated to your ecu. A job for a dealer or decent garage me thinks.

If anything is seriously up with the injectors the ecu brings up fault codes and may even bring on the engine management light.



yeah i think your right, - if the injectors were seriously out of tune to make the engine miss a beat then the engine management light would come on and the fault code would be stored. Its just a little annoying sometimes!
2005 Mondeo TDCI
Bluefin'd
JP Exhaust & Decat
Mintex Front Pads & Discs


Edited by Lornce on 29-01-09 06:01 PM. Reason for edit: No reason given.







 
frenchieg 
Just passed!
Re: Lumpy Idle on Cold Starts
30-01-09 12:00 AM - Post#98656    

    In response to Lornce

mine does this only for a few seconds and then idle is ok. It doesn't do it all the time on 1st start up. I've narrowed it down to doing it when i drive the car either long or short distance, park up, leave the car and then come back to it and start it. If i use the car and then leave it for a long time, like say overnight, then try and start it, it mormally starts fine, even on cold mornings!

Millers has seemed to help it a bit, definately helps with the lumpy 1500-2000rev problem some people on her get.

Give it a try and see if it helps with the cold starts. Only about a tenner.







 
cmmd11483 
stranger
cmmd11483
Lumpy Idle on Cold Starts
30-01-09 09:49 AM - Post#98678    

    In response to frenchieg

Yep I use millers all the time too, it's great.
2007 Mondeo ST TDCi




Edited by cmmd11483 on 30-01-09 09:49 AM. Reason for edit: No reason given.







 
little umpa 
Trundling along
little umpa
Re: Lumpy Idle on Cold Starts
30-01-09 01:35 PM - Post#98705    

    In response to cmmd11483

just had mine done in november and a leek test was done on the injectors to see which were knackered 3 were but all 4 replaced just incase, car was suffering the same starting symptoms








 
JazzyGeoff 
Pain is temporary, Pride is forever!
JazzyGeoff
05-02-09 07:45 PM - Post#100972    

    In response to little umpa

Well mine went in to Fords in Somercotes today and they did the leak test and checked for error codes but found nothing and the leak test was ok. Got in the car to drive home and it was so lumpy the whole car was shaking - got the bloke to sit with me for a min and he said it was rough - went to speak to manager and he just said that nothing found on the tests so can't do anything!!!

Is it worth getting someone else to check the injectors? Seems strange mine is doing the same as the above but they can't find a problem!
55 ST TDCi








 
GingerTom 
No dogs allowed !
GingerTom
05-02-09 09:11 PM - Post#101024    

    In response to JazzyGeoff

On these cold mornings I always get a few seconds of it being all over the place but it very quickly settles down and then runs perfectly.

I just hope it is temperature related (maybe compression ignition doesn't work so well on cold diesel?) and nothing else.
Ford Cortina Mk13 2.2 GhiaX Hatch in Sea Grey. Built 24/2/06. Reg 16/3/06. Owned since 9/3/2007.
Bluefin, G.Welch Decat, Shell/BP fuel.
My car diary: http://www.stdrivers.co.uk/forum/showtopic.php?tid...








 
Motorman116 
Motorman116
Motorman116
05-02-09 09:32 PM - Post#101045    

    In response to GingerTom

I would maybe try some injection cleaner, could be a mucky injector
2005 Ford Mondeo St Tdci, Performance Blue
Tinted Rear Windows (Limo Black)
factory fitted Xenons
Black eye headlights
Angel Eye Halo's
Detango front Indicators / chrome bulbs
H7 8000k Hid Fog Lights
New Foglight rings
Daytime running lights
Heavy Duty Varta Battery
K&N Panel Filter
Wingspeed Decat Pipe
Powerflow cat back with twin rear exhaust boxes with 4" tailpipes
Airtec Pro Intercooler
Forge Silicone Hoses (in Blue)
Original Focus St3 Alloy Wheels
Eibach Pro Lowering Springs
Asbo front calipers, with Ford 320mm Discs and EBC Redstuff brake pads
EBC Turbo grooved rear Discs and red stuff pads
Goodridge braided brake lines
Stebel Nautilus twin airhorns (139db)
Turbo Boost / volt / Oil temp Gauges
CNL Custom Remap
PowderCoated wheels (in Anthracite)

Mods to do 2010
Fit headlight eyebrows








 
JazzyGeoff 
Pain is temporary, Pride is forever!
JazzyGeoff
05-02-09 09:38 PM - Post#101053    

    In response to Motorman116

Cheers for the suggestions, I have tried injector cleaner (two consecutive tank full's) and it was doing it before the cold set in so I think it a bit more serious than that but not serious enough to show up any faults, very frustrating!

It'll be one of those that is ok till warranty runs out then BANG that'll be a grand please!
55 ST TDCi








 
little umpa 
Trundling along
little umpa
05-02-09 09:47 PM - Post#101061    

    In response to JazzyGeoff

did the mechanic phone ford technical ?, reason being is its deffo got a fault and the mec has sat in with you and experienced it, so should they not be phoning someone higher up on the knowledge side to come up with a idea of what to look for next ?, this is what ford done with my car when it had a fault and they hadnt a clue what to do next, you could leave it there overnight to let them see first hand whats going on







 
JazzyGeoff 
Pain is temporary, Pride is forever!
JazzyGeoff
05-02-09 10:27 PM - Post#101087    

    In response to little umpa

He didn't phone Ford but he did offer to leave it with them again (already left it over night so they could check it on first start up) but said it would be another £80 (out of warranty) so I told them not to bother.

I have just read up on cleaning the MAF sensor and adding a MAFAM on tuning-diesel.com so may try these (if they fit the Mondeo) to see if that helps. I must admit that I would expect a fault if it was an injector playing up but 99% of the time that's what it is and it gets sorted straight away.

It's either a phantom dodgy injector or something totally different. Why is nothing ever simple!
55 ST TDCi








 
GingerTom 
No dogs allowed !
GingerTom
05-02-09 10:56 PM - Post#101099    

    In response to JazzyGeoff

Geoff have you thought of the old EGR? They certainly make the engine very lumpy but it may not have brought up a fault code yet. Don't know if you fancy having a look inside it or getting the garage to to see if it's dirty?
Ford Cortina Mk13 2.2 GhiaX Hatch in Sea Grey. Built 24/2/06. Reg 16/3/06. Owned since 9/3/2007.
Bluefin, G.Welch Decat, Shell/BP fuel.
My car diary: http://www.stdrivers.co.uk/forum/showtopic.php?tid...








 
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