Author Topic: loss of power in high rpm (Read 4804 times)

logger · « **on:** July 24, 2007, 10:51:45 PM »

I am experiancing loss in power in the range of 4500 rpm up . When excellerating it goes up to approx. 4500 then there is a loss in excelleration where it should really be pulling, Any body have any input .

Thanks

sumyungguy · « **Reply #1 on:** July 25, 2007, 12:10:45 AM »

Do you hear any pinging/detonation? Replace fuel filter and spark plugs.

logger · « **Reply #2 on:** July 25, 2007, 07:40:08 AM »

No do not here any detonation . Replaced fuel filter and spark plugs already .

b318isp · « **Reply #3 on:** July 25, 2007, 09:07:13 AM »

Also replace your aif filter and check your Air Flow Meter is not sticking. Check the inlet bellows between the AFM and thottle body is not cracked too.

logger · « **Reply #4 on:** July 25, 2007, 09:41:45 AM »

air filter new . How do you check the afm to see if it is sticking ?

xsjado · « **Reply #5 on:** July 25, 2007, 09:54:44 AM »

check your fuel pump pressure, maybe not hitting 3.5 bar like it should.check the color of your plug, signs of a lean condition...just from my own experience.....

logger · « **Reply #6 on:** July 25, 2007, 10:00:27 AM »

how do you check fuel pump pressure ? spark plugs are a bit white .

romkasponka · « **Reply #7 on:** July 25, 2007, 10:43:00 AM »

Check engine fault code

It could be lambda sensor and camshaft position sensor..

logger · « **Reply #8 on:** July 25, 2007, 10:54:50 AM »

engine fault code is 1444 no faults

romkasponka · « **Reply #9 on:** July 25, 2007, 11:00:39 AM »

You should make engine electronic diagnostic in you country dealer workshop, i had problem like this once it was lambda (ECU gives foult code ONLY then sensor is completly out of predetermined limits) and other time it was camshaft position sensor (it is very sensitive to mounting dimension, I mean gap, O-ring was replaced and problem was solved).

p.s. In AUTODATA it is very good discription how to check various sensors.

logger · « **Reply #10 on:** July 25, 2007, 11:12:18 AM »

Where do you find auto data ?

logger · « **Reply #11 on:** July 25, 2007, 11:43:31 AM »

cam sensor o-ring replaced no dice .

xsjado · « **Reply #12 on:** July 27, 2007, 09:23:24 AM »

your engine is running lean if the spark plug is white,.mechanics should have a fuel pressure gauge with a t connection. when you change your fuel pump change the filter as well, may be clogged after all those years.

logger · « **Reply #13 on:** July 27, 2007, 10:01:56 AM »

fuel pump and filter checked there fine there 4 months old approx 3000 km

logger · « **Reply #14 on:** July 28, 2007, 12:49:44 PM »

thanks for the help . Turned out to be a clogged cat converter .