Trophy jerky / kangarooing

[bearne1]

Hi all,

The T has been a little jerky of late, random sporadic speeds, nothing permanent. Mpg is high, does not seem to be drinking fuel, both lambdas replaced last year, and no warning lights.

Any ideas what this could be?

Thanks

 

[Cue]

Does this just happen when the engine is cold or just started?

 

[bearne1]

Does this just happen when the engine is cold or just started?

No it seems worse when it's hot!

seems to be getting worse but is still only intermittent!

 

[eljeffo64]

Have you tried cleaning the MAF sensor? (Be careful use the right spray and don't touch the workings).

 

[bearne1]

Have you tried cleaning the MAF sensor? (Be careful use the right spray and don't touch the workings).

Is this the grey or black sensor?

im sure I have a spare one of each in the garage!

 

[eljeffo64]

It's the bit within the intake plumbing before the plenum. I'm sure someone has posted on this before (with a pic maybe)??

 

[Carbon Chaos]

I thought that renault use a 'Manifold Absolute pressure' sensor (MAP) in the inlet manifold not a MAF sensor.

Air Filter,intake hose(90 bend) then throttle body,if i remember correctly no MAF? correct me if im being dim.

The MAP pressure sensor is on the timing belt end of the plenum just pushed in on 'o' rings.

Looks like this

 

[eljeffo64]

I might be confusing it with a tech article on the 997 I read on another forum a while back, or was it on the Range Rover.....; (too many cars too many technologies )