Technical 500 Twinair won't rev past 3000 on full throttle

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Technical 500 Twinair won't rev past 3000 on full throttle

Popey500

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Wondering if anyone else has had this? Had my coil packs changed on my 61 plate 500 twinair 5 weeks agao after the car stranded me with terrible running engine and a multitude of warning lights. All been well until the weekend when it seemed hesitant under full throttle and pulling away form junctions. Car was well up to temperature. Put the clutch down, kept it in 1st gear and floored the accelerator to rev it out and it wouldn't rev past 3000 rpm. Revved fine on partial throttle. Have tried this several times since with the same results. full throttle blip, clutch in, in gear, engine won't rev past 3000 rpm. If we were back in the days of carbs I'd suspect a fuelling issue bogging it down.

Car obviously going back to main dealer.

But here's the weird thing, the car does NOT do this when clutch is out and the gear's in neutral. Does anyone know if Fiat built in some weird self protect function to stop people flooring the throttle and dumping the clutch?

Cheers - and be nice to the newbie ...
 
The TA has a 3000rpm limiter

When you have the clutch down it will not rev over 3000rpm until you lift the clutch, when it's fully engaged the limit is removed

Working exactly as it should,

Personally I find it a little annoying if you pull off in a hurry it often hits 3k before it has registered the clutch fully engaged and you get that lurch as the limiter starts to drop power before releasing to full power a fraction of a second later
 
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What a helpful answer - I take it then that the 3000 rpm limit only applies to full throttle and not part throttle as mine will happily zing to wherever on a part throttle?
 
Not really sure on the part throttle.

I know if you sit with your foot on the floor it levels at 3k

Will have to try it tonight when I get home on part throttle and report back.

Interesting if it is linked to full throttle only

Cheers

Vicky
 
Going to retry myself - also to see if it does this in neutral with clutch fully down ...
BTW - nice website, from one photographer (and PR/journo) to another.
 
Tried it last night and definitely only seems to be full throttle AND also only if ca in gear. Clutch fully depressed but in neutral lets the little beast of an engine rev to the max.
 
Dint get chance to try mine last night as I did not get home till 11pm and did not think the neighbours would appreciate late night revving :eek:

Hopefully home earlier today so will have a go and report back,

Not working in London this week so out in the donkey car rather than the 500 during the day. :(
 
Going to retry myself - also to see if it does this in neutral with clutch fully down ...
BTW - nice website, from one photographer (and PR/journo) to another.


thanks , that's another litte thing to play with, ;)
not noticed the LURCH on my Punto TA, as I try to roll in 1st then change to 2nd and accelerate HARD - does @5 to 50 mph in @6 seconds, out of laybys
only issue is wheelspin / torque steer from 10 / 15 mph, :eek:

great for such a little engine in a biggish car:cool:

Charlie - Oxford
 
how can i remove the rev limter from my 1 gear (3000 rpm)? my dad got a ta too, it's from 2011 and it dont got the rev limter, but my 2012 ta got it :(
 
Fairly simple job of fiddling with the gear position switch if you're that way inclined, the gear position switch must function correctly while driving though as the mapping is gear dependent (fault codes aside).

I don't know why you'd want to though as 3000rpm is just about perfect revs for a race launch :eek: Maybe an extra 500rpm wouldn't go astray on a stock car, but if you do a remap you should find 3000 is the sweet spot.
 
3500-4500 rpm is the sweet spot to race launch with sticky wide tyres, I got rid of the limter just took the sensor off the clutch thanks :)



 
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