LCR, Slightly lumpy tickover ??

[Mattman]

My 53 LCR has got revo before i bought it, but it seems to have a very slight lumpy tickover - it this normal as my stage 2 apr ibiza ticked over smoothly.
becides this its spot on ??
anyone else get this ??
ta
matt

 

[jetsetjimbo]

All the time or just when cold?

 

[andycupra]

no not normal.

have you done an ecu reset lately?

could be maf, could be fuel, coil pack, could be lots of things!

 

[Mattman]

it runs fine, just a little lumpy ( very little but noticeable) on tick over all the time, evan when warm ??

 

[Mattman]

ecu reset?? how do i do that ?

 

[andycupra]

unplug the battery. its not exactly a ecu reset but will go back to default settings.

make sure you have the radio code to hand!
something else you could try is unplugging the MAF, (air flow sensor) before you reset the ecu. a light will come up on the dash as its unplugged and it will run using alternative measurements but in a slightly safer mode. see if the tick over gets any better.

The plug it back in for when you do the reset.

used different fuel lately?
ive known a few cars get this when changing fuel or getting a dodgy batch.

 

[Pagnobito]

Mine has always had a slight lump to it on tickover, done nearly 110K miles never done any harm. It doesn't go below the low oil mark on the dipstick between services either. Never topped it up. Asked the Dealer about it once and they said its normal.

 

[meep meep]

What the?

If you disconnect the battery, the revo mapping on the ecu is terminated and the ecu reverts back to its standard 225 program??????????????? Cant be, surely!

 

[andycupra]

If you disconnect the battery, the revo mapping on the ecu is terminated and the ecu reverts back to its standard 225 program??????????????? Cant be, surely!

no it wont lose revo.

the ecu adapts over time, what i meant was the setting will go back to default in terms of adaption. you would not lose revo.

 

[Legohead]

I've noticed a very slightly lumpy tickover with Optimax, and tahts on 3 turbo cars now.
Now I use Tesco 99RON stuff, never looked back

 

[Mattman]

use optimax on every tankfull ?? hmm will try reset and see what happens - already tryed unplugging the maf.
thanks guys