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Punto problem
Thinking about it - 5/4/09 at 08:02 AM

Yes I know its a Fiat.

My daughter has just reported to me a problem with he r car 1.2 8V Punto Mk2

Starts and runs ok.
No missfires.
No nasty noises.
No power under load up hill or on acceleration.
No smoke
Can't see anything obvious/visual
No engine management light or anything.
Help, this is taking up valuable build time.

[Edited on 5/4/09 by Thinking about it]

eznfrank - 5/4/09 at 08:07 AM

We have a Cinquecento that had a similar problem when the crank position sensor was on it's way out.

zilspeed - 5/4/09 at 08:23 AM

quote:
Originally posted by Thinking about it
Yes I know its a Fiat.

My daughter has just reported to me a problem with he r car 1.2 8V Punto Mk2

Starts and runs ok.
No missfires.
No nasty noises.
No power under load up hill or on acceleration.
No smoke
Can't see anything obvious/visual
No engine management light or anything.
Help, this is taking up valuable build time.

[Edited on 5/4/09 by Thinking about it]


Maf or throttle pot ?

Thinking about it - 5/4/09 at 08:49 AM

Zilspeed

I don't understand

Mark Allanson - 5/4/09 at 08:51 AM

The 2 major weak points of the 1.2 FIRE are the ECU and the head gasket. Always the first things to check.

MikeRJ - 5/4/09 at 09:01 AM

Blocked exhaust/collapsed cat?

davidwag - 5/4/09 at 11:38 AM

And my crystal ball says " professor plum in the library with the lead piping"

You need to plug it in to get some proper diagnostics done. Even if there are no fault codes logged then you need to look at live data to see whats going on.

David

froggy - 5/4/09 at 12:59 PM

sounds like blocked cat to me ,have a feel at the tail pipe for pressure when you rev it up quite common for a lump to break off and block the outlet on the cat

adithorp - 5/4/09 at 04:42 PM

Have I missed something? Whats the problem she reported? Or is it just unusual that there's nothing wrong?

adrian

zilspeed - 5/4/09 at 05:20 PM

This bit is the problem.

No power under load up hill or on acceleration.

In addition to the points listed above, a duff throttle pot or a dead MAF unit can make the engine go very flat indeed.

Not that they have much grunt to start with anyway...

Thinking about it - 5/4/09 at 05:23 PM

adithorp

No power under load up hill or on acceleration.

adithorp - 6/4/09 at 12:23 PM

I that case...
First place I'd be looking is a blocked exhaust. Getting a lot of them this time of year after a damp winter. Condensation rots them inside.

adrian