j8mie

Sorry for creating yet another thread about hesitation problems, but I didn't want to hi-jack MB's thread that's running at the moment.

I'm still having problems with acceleration on a irregular basis, and this morning was the worst yet. It seems to happen more often if the engine is still warm, and I use the car again shortly afterwards. I'm not sure if this is related, but it's something I've noticed.

I've found in the past that when I accelerate the car struggles and starts kangarooing really badly until I lift off and re-apply the throttle. That didn't help today for the first time. I had to bury the throttle pedal into the carpet to pull away from a junction to stop this happening. Not ideal in the current weather conditions you'll agree.

Things I've Tried

MAP "whack"
Replaced the MAP sensor
Cleaned out the throttle body
Tightened the throttle cable (taught not tight)
Changed spark plugs
Checked for air leaks
Check air filter
Reset ECU

None of these seem to have made any/much difference.

A mate suggested that I might have a problem with my throttle position sensor (TPS) on my Spoon throttle body. Is it easy to swap the TPS over, as I would like to try the one on my original OEM throttle body to see if that helps?

Failing that I'll just put the OEM throttle body back on the car and see if that helps.

A7DY W

Jamie - Has this fault developed soon after fitting the Spoon TB ?

I'm asking this because I have a J's TB sitting at home waiting to be fitted !!

Have you tried the ECU reset ? Checked the air filter ?

Andy

j8mie

I don't remember it happening before I fitted the new TB, but it's not like I fitted it and I started having problems the day afterwards. The problem was about the same time I had a faulty O2 sensor so I put it down to that at first.

I have reset the ECU and checked the air filter

I do know there are two Spoon throttle bodies and the v2 needs a Spoon ECU to get the most out of it, where as my v1 does not (my one). Not sure what the difference is though.

MB

Hi Jamie.

A TPS needs to be setup correctly to get it to function right. You really need to see what voltage it is reading when its closed, and when its fully open.

When closed it should be 0.3v and open it should be 4.8v

If its wildly out (more than 0.3 + or -) then it could cause some probs. It can be adjusted by loosening the bolts and movig the sensor, but it can be a little tricky.

If you are ever down my way I can have a look, or you could get your mutlimeter out - I can tell you how to do it, or you may know already!

Not convinced its the problem though.

j8mie

Mark - If you could let me know how to test the voltage with a multimeter I'll give it a go tonight.

biker1

possible coil pack breaking down?

MB

It could be that too, or injectors, or plugs as part of the same system but the ECU seems quite good at giving misfire codes.

It sounds like the prob I have just had which was the MAP.

Mine felt like it was on 2 cylinders a when pulling away, then it would pickup. Just the MAP buggering with the fuelling.

j8mie

Is there anyway I can test to see if it is a coil pack problem?

MB

Did you get my PM Jamie?

j8mie

Yes I did thanks Mark. Sorry I didn't reply I had some mates round last night for beers and FIFA 08 . I did have a quick look at the connection and your instructions make sense now. I'll give it a go this evening.