182 hesitation an kangaroo

[jezvalva]

When foots down it pulls nicely, MPG a bit poor around town, an we can rule out injectors as they have been sonic cleaned.

Also wile changing down, say to a junction she kangaroos an i haven't even got foot on throttle.

Any ideas?

Had cleaned injectors
An new pre cat lambda sensor.

Cheers for any help.

 

[v0latile]

What about TPS?

 

[jezvalva]

I have tried 3 off working cars plus 3 different pedals too.

 

[v0latile]

Need more info, when did the problem start? does it only kangaroo on slowing down with engine braking, any flat spots when accelerating normally, has it been mapped or had a dodgy exhaust put on etc.

 

[jezvalva]

bought the car with a farted out piston. So changed engine now I got her on the road. No problems else where, exhaust is standard an no d-cat original cat fitted.

 

[jezvalva]

O an she stalls when parking sometimes randomly.

 

[AlexW]

Pop round sometime, or I'll sort out some time to pop to yours and I'll plug it in & bring a few spare bits off one of my sports.

 

[jezvalva]

Anyone ever had a map sensor fault?

 

[whiteryno111]

When you say kangaroos are you talking about the revs on idle going up and down without touching the pedal?

 

[jezvalva]

No I mean wile slowing down using the gears, not touching the throttle at all.

 

[jezvalva]

O an she stalls when parking sometimes randomly.

 

[jezvalva]

Yaaaaaaah now got EML.

 

[lee_car]

had the same problems with mine after a new depahser and the timing was out

 

[AlexW]

That's what I said first. Is it deffo 100% spot on jez?

 

[jezvalva]

Well the horse shoe was exactly where it was supposed to be.

 

[jezvalva]

Changed the MAP sensor today, deleted all codes before an now the eml light has gone but still getting a code for the after cat O2 sensor which I assumed was only the eml light? An if it fails it can't affect any of the running issues?

Still got a little hesitation I think but it could be plugs or coil I'm intending to buy them both then il update again.

Also was thinking about making a sticky for people to see what the symptoms were an see what I changed to sort the problem, instead of people like me looking in vain an finding someone with the same issue but then the thread dies no updates, it's very frustrating.

 

[jezvalva]

After changing the MAP sensor it was better but now it's as bad as before, after looking around on the web if found similar symptoms linked to a faulty carbon canister or the purge valve, has anyone else ever come across this on a F4R?

 

[Wobba]

Any solution so far?

 

[jezvalva]

No spent all yesterday changing the loom an still have bad idle issues an stalling at the occasional Junction.

 

[Wobba]

Do a compression test. Good compression will rule out the timing or bad valve possibility. Also, get an error code for the EML light if possible. See what it says and go from there.