Rough Idling & Stalling

[J3TXR6]

is it easy to take the TPS out?

anyone got any docos about how to do it?

[myXR6T8U]

this is the exactly the same thing that is happening to my five speed 04 xr6t. im going to put mine on the dyno when I get a chance

[mrmackie]

Had the same problem, I would stop at a set of lights and the idle would go way low and be realy rough plus my lights would occasionaly flicker at idle aswell. Turned out to be the battery. Had a H/duty battery fitted and it was all good.

[mrmackie]

Had the same problem, I would stop at a set of lights and the idle would go way low and be realy rough plus my lights would occasionaly flicker at idle aswell. Turned out to be the battery. Had a H/duty battery fitted and it was all good.

XXX ^^Epic Fail^^

After not seeing the problem since this post, it wasnt just the batt.

Had the same problem AGAIN and even worse this morning. Shocking idle probs and rough take off. Then ATLAST, the engine light pops up and stayed on. Drove straight to dealer and turned out to be the Fuel pressure regulator.

Hope this helps anyone else with a similar prob

[BWST_XR6T]

yeah it helps me. I'd already got a new battery but it still had the problem of revs dropping really low, like to 250, and back again. I also changed the fuel filter too, as I thought that it was something to do with fuel, and was overdue anyway.

[BA_XR6T]

Im having the same problem too. But the eratic idling isn`t as bad in mine. Its a 05 BA XR6T MkII Manual.

The idling hovers around 900rpm, just poping around between 800 and 900rpm. It jolts the car slightly when it drops. Its done it since I got it (2 days ago) and has stalled 3 times on me now just sitting at lights. Its extremely sudden, no slow drop in revs, it just dies. Weird.

I popped past Ford to see if they had any ideas, and the service manager seemed to think I needed to upgrade the computer or some sh*t, or he said it could be the throttle body. Said it either needs replacing or a clean out.. Its booked in for a service in 2 days. Ill let you know the outcome.

Edited 08/09/09 11:04 AM by BA_XR6T

[45T-XR]

The throttle position sensor id say is your drama,

I had this problem a thousand times when I was at ford,

The early BA's had heaps of dramas with the TPS's causing this symtom, The early tps's failed frequently and ford new this and sourced a different one, the old style ones had a dimple in them the size of your finger tip, the newer style didn't have the drama, and I cant ever remember having to replace the revised ones, so they must be half decent, I wouldnt recommend grabbing a tps of your mates car, they can be a bit tricky, heres why

The tiny little piss- ant screws ford chose to use to screw the tps to the throttle body have bulk loctite on the them and the start-stop for applied by a ratchet will break the screws are a pain the ass to remove as they are harder than the aluminium throttle body, the best way if found to remove then is to take the car for a drive and get it to operating temp, this softens the loctite, then us a 3/8 or 1/4 drive air ratchet or battery powered ratched to remove the screws as they supply a constant force in stead of stop start. From memory throttle bodies are over $500 to replace, that's if you go factory.

While your replacing the tps, clean all the carbon build up from inside the throttle body as this reduces the passage of air bypassing the butterfly and causes havoc with idle parameters the car has learnt, and after that disconnect the battery for 20mins of so to erase the paramters learnt in the Keep alive memory, reconnect the battery and take the car for a spin, this should fix your drama

Let us know how you go

Hope this helps

[F6R]

good info there. Did it fix the problem?

[blocka46]

I have always found hire cars are good for cheap parts.

[mrmackie]

XXX ^^Epic Fail^^

After not seeing the problem since this post, it wasnt just the batt.

Had the same problem AGAIN and even worse this morning. Shocking idle probs and rough take off. Then ATLAST, the engine light pops up and stayed on. Drove straight to dealer and turned out to be the Fuel pressure regulator.

Hope this helps anyone else with a similar prob

Ummm, im not sure how to put this, but the fkn problem is back! Mainly happens when the car is cold. Its noticable at night as my lights dim realy badly in reaction to the rough idle/running of the engine, then come good again. Im guessing there is a spark issue, which in turn is not allowing the motor to ignite properly, but im not fully certain.

It is back at ford for the 7th time, and awiating thier 'professional' (ha) diagnosis, although they tell me they cant find anything wrong with it and the ecu hasnt recorded anything of use. Im so glad im just out of warranty, not!