Any Fiat techs on here? Punto non-start
12-03-2012, 09:48 PM
#1
PassionFord Post Whore!!
Thread Starter
Any Fiat techs on here? Punto non-start
Been looking at a Fiat Punto today, 08 plate Grande Punto 120hp 1.4 turbo.
Non-start, cranks over but no start.
Has spark at plugs.
15 bar compression on all cyls.
3 bar fuel pressure.
Plugs are wet.
Has code in ECU for 'motorised throttle' recovery P1638.
I took the intake pipe off the TB and the throttle plate seemed stuck, had someone operate the pedal with key on while I pushed the throttle plate, the TB clicked and whirred then started moving.
My thoughts were if the TB hasn't been opening it's been injecting fuel but with no air, and flooded it - do these have any known issues with TBs failing?
It's a Bosch ME7xx system.
Non-start, cranks over but no start.
Has spark at plugs.
15 bar compression on all cyls.
3 bar fuel pressure.
Plugs are wet.
Has code in ECU for 'motorised throttle' recovery P1638.
I took the intake pipe off the TB and the throttle plate seemed stuck, had someone operate the pedal with key on while I pushed the throttle plate, the TB clicked and whirred then started moving.
My thoughts were if the TB hasn't been opening it's been injecting fuel but with no air, and flooded it - do these have any known issues with TBs failing?
It's a Bosch ME7xx system.
12-03-2012, 10:03 PM
#2
big floppy donkey dick
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throttle bodies on Fiat/Alfas are shocking quality at the minute Gary
get a scope and check PWM waveforms for glitches or drop spots, seen one where plastic gear had sheered 2 teeth! 22k car
get a scope and check PWM waveforms for glitches or drop spots, seen one where plastic gear had sheered 2 teeth! 22k car
12-03-2012, 10:53 PM
#4
big floppy donkey dick
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yes, lots of new stuff suffer with missfires on tickover due to lack of air also belive it or not!
i may be able to help with guided trouble shooting via my KTS670 if thats of any use?
pm me and i`ll send you my number.
was gonna have a look but its in my van DOH!
i may be able to help with guided trouble shooting via my KTS670 if thats of any use?
pm me and i`ll send you my number.
was gonna have a look but its in my van DOH!
20-03-2012, 07:22 PM
#5
PassionFord Post Whore!!
Thread Starter
Fiat Punto non-start...
Had visit from Fiat engineer today, he ummed and arred and checked all the stuff i'd done, he wasn't happy with fuel quality, so long story short, drained fuel, new fresh unleaded and set of new plugs and it fired up!!
VERY pleased did not fit a new ECU as once they're fitted , they're coded to that car and can't be returned.
Doh!! Remember kids, always start with the basics!
Had visit from Fiat engineer today, he ummed and arred and checked all the stuff i'd done, he wasn't happy with fuel quality, so long story short, drained fuel, new fresh unleaded and set of new plugs and it fired up!!
VERY pleased did not fit a new ECU as once they're fitted , they're coded to that car and can't be returned.
Doh!! Remember kids, always start with the basics!
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