c20xe 4.5k limit

[chrisy1.6sr]

ive got a corsa with a redtop in standard late spec c20xe coilpack one and it limits at 4.5k but the eml light isnt on it comes on with the ignition but then goes off again. any idieas what could cause this to happen as its quite frustrating
:confused:

[comptoncj]

GM engines tend to give those problems when the crankshaft sensor isnt working properly, does it start ok or take alot of cranking before it goes?

[chrisy1.6sr]

it starts fine and runs ok aswell just as soon as you hit 4.5 k it limits

[Rich]

Cam sensor can cause it, also check your earths. The earth on my corsa to the starter was loose and caused the same problem. Was like hitting a brick wall the first time i planted it!

[napalm_27]

my tigra does this aswell my mate said it has always done it and its the clocks that are wrong but i always knew it was a problem
but mines a dizzy.? could be cam or crank or maybe earths

[Rich]

dizzy engines still have a hall/cam sensor

[napalm_27]

yes i know this.

[Dave VXR]

Have know this be caused by faulty ignition systems in the past....
Lack of revs etc... so if all else fails look at that :D

[chrisy1.6sr]

cheers il have a look at these things and see if i can get to the bottom off it

[NOVA saloon]

My Corsa ex early dizzy did this was throttle position sensor unplugged car ran ok just took a little longer for revs to drop.

[breadstraw]

my xe did this, just like NOVA saloon said
just unplug the throttle position sensor and away you go
although don't expect to be able to engine brake AT ALL :\

[chrisy1.6sr]

got this sorted just ended up being the clocks :)