I really hope someone can help, as garage can't.i have fiat punto grande 2007.when it rains really heavy,or with a lot of spray, my engine management light comes on and it goes into limp mode.if I switch off and back on it goes as normal.it drives perfectly well in dry weather and once you stop and start engine .i have took to the local garage and diagnosed with throttle pedal fault.mechanic had it in and aligned potentiometer.i took my car home and drove well until rain again and did the same.i contacted mechanic again and he said he would speak to auto electrician.first he said it could be a pipe with my throttle wires but today he said it needs software update.i phoned fiat today and he doesn't seem to think software update and said would need to look and diagnose.he said two hours will cost me 170 quid.now I am no mechanic and really don't understand cars but if it was throttle pedal at fault or software at fault hen surely it would do in dry weather and not only just in wet weather.i drive miles in dry weather but as soon as rains it comes on..please please anyone know?
Grande Punto Car not work in tain
- Thread starter Craigwi26
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Grande Punto Car not work in tain
local garage is always a sign..,
these cars electrics can be "fussy",
a common fault is damp in the fusebox (under bonnet ) look in the "sticky" section at top of GP section,
Charlie - Oxford
these cars electrics can be "fussy",
a common fault is damp in the fusebox (under bonnet ) look in the "sticky" section at top of GP section,
Charlie - Oxford
There's a metal plate on the bulkhead between the brake cylinder and servo.
Right behind the throttle and brake pedal.
This is notorious for rusting and allowing rain water in.
It's quite feasible that yours has rusted and allowing rain water on to the potentiometer.
Right behind the throttle and brake pedal.
This is notorious for rusting and allowing rain water in.
It's quite feasible that yours has rusted and allowing rain water on to the potentiometer.
I'd be tempted to have a look at this plate, see if it's rusted through before start ripping fuse boxes apart.
Under the bonnet, directly inline with the steering wheel, It's concealed behind the bulkhead soundproofing matting.
https://www.fiatforum.com/grande-punto-guides/241678-fix-water-footwell-rust-brake-servo.html
If you're handy with spanners and quite nimble, then the plate can be replaced in an afternoon, and costs around £15.
If nether apply, you may get away with patching it up using lots of silicone sealant, and maybe a piece of tin/plastic cut to shape, to cover the hole.
This is what others have done.
Fiat actually call this a gasket, It's about the same thickness as tin foil, so there's no way it's structural.
However, i could imagine that if an MOT tester found it corroded, he may be inclined to think it is structural and fail it.
Under the bonnet, directly inline with the steering wheel, It's concealed behind the bulkhead soundproofing matting.
https://www.fiatforum.com/grande-punto-guides/241678-fix-water-footwell-rust-brake-servo.html
If you're handy with spanners and quite nimble, then the plate can be replaced in an afternoon, and costs around £15.
If nether apply, you may get away with patching it up using lots of silicone sealant, and maybe a piece of tin/plastic cut to shape, to cover the hole.
This is what others have done.
Fiat actually call this a gasket, It's about the same thickness as tin foil, so there's no way it's structural.
However, i could imagine that if an MOT tester found it corroded, he may be inclined to think it is structural and fail it.
