Ford Mondeo III (2000 - 2007) - 2001 1.8LX - New engine problem

Honest John Back Room » Technical matters
View Threaded
Sat 16 Feb 2008 11:57
2001 1.8LX - New engine problem - Richie_green
Hi

I have had a new engine fitted but the garage fitting it have now said that the engine keeps 'surging' and it may have something to do with the fuel pump.
Can anyone shed any light? Is this likely to cost me even more cash?

(year found via a forum search and entered into subject header)

Edited by Webmaster on 16/02/2008 at 11:59

Reply | Report as offensive | Link
Sat 16 Feb 2008 12:29
2001 1.8LX - New engine problem - injection doc
need more info on your discription of surging but mostly caused by air leaks!. Was this the one that started off with a rattle from the inlet manifold some time ago? & if so was the manifold replaced or did you drive it till the engine failed?
Doc
Reply | Report as offensive | Link
Sat 16 Feb 2008 21:04
2001 1.8LX - New engine problem - Richie_green
Yes it is. The engine has been replaced but this has happened with the engine in! The garage have said it starts ticking over fine then surges, and they asked if the car has had any fuel pump problems., which it hasnt
Reply | Report as offensive | Link
Sun 17 Feb 2008 17:43
2001 1.8LX - New engine problem - injection doc
Has it had the possibly faulty inlet manifold replaced? Still need to know more about the surging? surging when driving ? Hot ? Cold ? idling? What does it idle at ? by how much does it fluctuate? has it had an emission test? that should offer most information. Has it had a diagnostic test? Does garage know what they are doing?
Inj Doc
Reply | Report as offensive | Link
Mon 18 Feb 2008 18:33
2001 1.8LX - New engine problem - Richie_green
Just spoken at length with the garagae - I had my concerns as to there ability but feel slightly happier now.
The new engine has been replaced and is running fine. Starts every time from cold and runs like a treat....until it heats up. Once it heats up, it surges and revs high. Then when driving and coming to a stop its seems to cut out, he said the revs just go.
They did a diagnostic and it came back with something to do with the thermostat - he then said this could be causing the cut off.
Any ideas anyone?
Reason I like to ask on here is there is such a broad range of knowledge......and I am not 100% convinced/understand what the garage is saying.
Reply | Report as offensive | Link
Tue 19 Feb 2008 11:06
2001 1.8LX - New engine problem - Bri
Hi, not sure if it is relevant, but my son had what seams like a similar probem with his Citroen Saxo. I found that it was the throttle sensor connector. Disconnecting the plug & a few squirts of WD 40 before reconnecting cured the problem.
Could be worth a try?
Reply | Report as offensive | Link
Tue 19 Feb 2008 11:38
2001 1.8LX - New engine problem - Collos25
Throttle sensor is the most likely culprit as Bri says its a common fault with Mondeos I believe a plastic part disintergrates causing the excact symptoms you describe.
Reply | Report as offensive | Link
Tue 19 Feb 2008 12:43
2001 1.8LX - New engine problem - Richie_green
Thanks for this - is the thermostat not an issue then as he has said it is reporting an issue on the diagnostic test?
Reply | Report as offensive | Link
Fri 22 Feb 2008 10:15
2001 1.8LX - New engine problem - Richie_green
An update - the garage had looked at the throttle sensor and replaced the thermostat heater without any resolution. It has now got to go to a specialist diagnostic. The car is still starting fine but when hot the rev counter goes erratic and cuts out as soon as the clutch is dipped.....oh the joy!
The garage have asked around and even phoned ford but they can't offer anything!!
Reply | Report as offensive | Link
Fri 22 Feb 2008 11:00
2001 1.8LX - New engine problem - Saltrampen
On these 1.8 engines I believe there is an electronic sensor on the EGR system. Was this reconnected correctly?
Does it rev slightly higher if you dip the clutch at speed? When the ECU knows the speed it adjusts the idle mix (higher revs). Normally though if any sensor is not connected you should get a fault code.
Does it cut out when clutch dipped at idle?
Did the garage actually takes reading from the throttle sensor? Or just check the connections?

Reply | Report as offensive | Link
Fri 22 Feb 2008 11:14
2001 1.8LX - New engine problem - Richie_green
I believe they have checked and double checked everything and are at a total loss.
There are no fault codes being reported at all now and a reading was taken and shoed to be fine.

The car doesnt cut out when the clutch is dipped at idle.

This has been going on for over a month now and he has passed it onto a diagnostic specialist, but I fear it could be something very simple!
Reply | Report as offensive | Link

Looking for a garage you can trust? Honest John's Good Garage Guide has thousands of reader recommended garages, plus how-to guides and tips on servicing.

The Good Garage Guide

From which small car to buy at which price point to the best UK-built cars, our Top 10s have the lot. Click now for your shortlist.

Unsure of what to buy? Our Top 10s are here to help you....