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        General >> Problems >> Cold start idle problem on 2,0 16v
        
(Message started by: sterio on May 12^th, 2004, 10:00am)

Title: Cold start idle problem on 2,0 16v
Post by sterio on May 12^th, 2004, 10:00am

The first 5 min when starting the engine the idle is uneven and the rpm goes up and down betwinn 400- 1000rpm. It almost stops sometimes. What shall i do the sort out the problem?
It works fine when the engine is warm.

Thanks
Dave

Title: Re: Cold start idle problem on 2,0 16v
Post by daven on May 12^th, 2004, 11:07am

Could be the fuel cut off loom see http://www.fordscorpio.co.uk/dohcloom.htm

Good Luck

Daven

Title: Re: Cold start idle problem on 2,0 16v
Post by sterio on May 12^th, 2004, 3:04pm

I dont think its that because it works fine when the engine is warm.
Can it be something with the "choke" system?

Thanks

Title: Re: Cold start idle problem on 2,0 16v
Post by sterio on May 14^th, 2004, 8:27pm

Anyone?

It starts ok. But after a little while the rpm dropps and the engine almost stalls. Then it jumps up and works ok for another 10 sec then drops again and so on.......
until it get warm.
What can it be??????

Please!!!
Dave

Title: Re: Cold start idle problem on 2,0 16v
Post by sterio on May 20^th, 2004, 7:48pm

I have found that the rpm drop is just when the car is in movement. Not when it stands still. When i have neutral and the car starts rolling it happends.
What could that be?
Is it something loose in the engine?
The car can not know that it is moving i suppose so it must be the movement that engages the rpm drop!?

Anyone?
Dave

Title: Re: Cold start idle problem on 2,0 16v
Post by Eddie on May 21^st, 2004, 2:12pm

Dave,this is dragging out far too long!

Have you had a good look at the wiring around the top of the engine,is any of the insulation flaking off?
If so then start taping it up! Or better still get a new engine bay wiring loom (about £90).

If the car is rolling in neutral,what happens if you turn the steering,do the revs drop suddenly. If this is the case then either the pressure switch on the power steering is not sending a signal to the ecu to increase revs slighly OR the idle control valve is not compensating.

eddie

Title: Re: Cold start idle problem on 2,0 16v
Post by sterio on May 21^st, 2004, 3:39pm

Is the wiring loom ford original and easy to fit or do i have to buy loose cables and draw my self?
If original, what partnumber?
Does it include wires for the sparkplugs?
Or are they baught separately?

Title: Re: Cold start idle problem on 2,0 16v
Post by Eddie on May 23^rd, 2004, 5:54am

It is the complete engine loom with all the connectors attached and preformed to fit in place of origina,up to and including the connectors to the coil packs etc,but not from coil pack to plugs.Have you looked under the top cover yet,there are no spark plug leads as in normal cars (normal,what am I saying??).

eddie

Title: Re: Cold start idle problem on 2,0 16v
Post by riverside-red on Sep 7^th, 2004, 8:36am

I had the same problem on my 2l, I eventually realised that the timing belt cover had been removed and the bottom pipe into the throttle body had been rubbing on the belt and had a huge hole cut in it. Changed the pipe, replaced belt cover and problem now sorted.
Hope this helps,
R-R

Title: Re: Cold start idle problem on 2,0 16v
Post by Eddie on Sep 9^th, 2004, 2:31pm

Timing BELT?

eddie

Title: Re: Cold start idle problem on 2,0 16v
Post by sterio on Sep 9^th, 2004, 4:05pm

No, its not that!
The problem is only when i have speed on the speeddial. When the car is still it has i stabile idle but when it starts to move, just as the needle starts to move it beginns to stumble and almost stops. Rpm jumps 400-900rpm up and down until the car gets warm. Then its just a little up and down approx 50-100rpm, and no problem.
What could this be????????
I will soon go crasy!!!!!!!!!
Could it be a computer thing?

Title: Re: Cold start idle problem on 2,0 16v
Post by Hazelnut on Sep 9^th, 2004, 8:55pm

Hi Sterio
The part cost me £38 sterling from a Ford dealer in Wimbledon London England.
This sensor is located at the front of the engine if you follow the ducting from the air filter housing into the engine it first takes you to the throttle the ducting is joined by a jubilee clip on to the engine to the left you should see wiring connected a sensor just by the throttle.
You should first disconnect the battery, remove this sensor using a small socket set two bolts
Then remove using long nose pliers the clip holding on the sensor to the wiring and plug make sure you pull the clip off with out breaking it.
All this sensor does is report to the engine management the position of the throttle with wear and tear the tracks are not making correct contact to tell the management it's position so it tries to find a track with contact moving the throttle up then saying that's too high, so it then moves to a lower position saying that’s to low thus sometimes getting lucky and finding the correct position also as the engine warms up metal expands also improving the contact. This may or may not cure your fault but I wish you luck in your quest.
Before you do purchase a new sensor try leaving it disconnected and start your engine it should run and tick over without moving up and down.

Title: Re: Cold start idle problem on 2,0 16v
Post by sterio on Sep 26^th, 2004, 2:34pm

Hant solved the problem yet!!
But if i press the pedal so i get around 1300-1400rpm is works smooth.
Is it possible with a computer to increase the idle rpm to 1300-1400rpm when the engine is cold? That would solve the problem.

Thanks
Dave