scoob spluttering lack of power low tick over-coil pack?????

Gerry H · Post by **Gerry H** » Wed Jan 14, 2009 11:48 am

As Blacky said, it could be something else. Inspect the plugs and maybe do a compression test

evildave · Post by **evildave** » Thu Jan 15, 2009 11:18 pm

ok so took it to clive atthowe today, first off lamda sensor is fooked (got a new one on order) then the trouble started, possible MAF so i'l get one of those sorted. if that don't cure it maybe an ECU fault.

cheers people :-)

blacky · Post by **blacky** » Thu Jan 15, 2009 11:29 pm

nasty....how di he find out those faults???

I had similar faults on my Impreza come up on teh ECU only to find out it was a broken plug, so i would check the simple things before spending hundreds on MAF's and Lambda sensors

duncan · Post by **duncan** » Fri Jan 16, 2009 12:14 am

Did the O2 sensor fix it albeit briefly?

What tests did he do to determine it was the O2 sensor?

What makes him now think MAF? Did you try cleaning it ?

IWANT1 · Post by **IWANT1** » Fri Jan 16, 2009 9:47 am

Sounds like a guessing game.

Gerry H · Post by **Gerry H** » Fri Jan 16, 2009 9:49 am

Gerry H wrote:As Blacky said, it could be something else. Inspect the plugs and maybe do a compression test

blackskygtr · Post by **blackskygtr** » Fri Jan 16, 2009 10:48 am

IWANT1 wrote:Sounds like a guessing game.

Not with Clive surely

Jay

evildave · Post by **evildave** » Fri Jan 16, 2009 12:43 pm

1. first off we checked the coil outputs, all sparking evenly and correct durations

2. checked the voltage wave output on the lambda and it was flatlining, went negative when the throttle was blipped, so was told that was knackered cos it should be a normal 'wave'.

3. then i asked to put it on the rollers to see if we could find the problem, ran it up (held boost made 270@ about 5000rpm) then mis-fired. when it came down to idle it was doing the 'running on 3' symptoms
plugged into the ECU and no faults were logged and everything seemed normal, so tried disconnecting the MAF- check engine light came on and the idle sorted itself out, plugged MAF back in and car continued to idle evenly.

as the ECU hasn't logged any problems it may have a fault but removing the MAF cured the problem and the check engine light came on so at least the ECU is reading MAF status.

i've ordered a genuine lambda sensor and picked up a 2nd hand MAF from a nice man on Bigpower lol

evildave · Post by **evildave** » Wed Jan 28, 2009 7:44 am

So the saga continues..................

New Lambda fitted, and 2nd hand MAF.

Car has had trouble idling once in the last week and still feels hesitant if i drive over 70mph, going back to Clives today for another look.

I guess the only other option is to buy a new MAF and maybe ECU by the way things are going

blacky · Post by **blacky** » Wed Jan 28, 2009 8:13 am

Have you checked your plugs and leads yet??