Lack of power in 3rd

Jayy · May 13, 2013

Above 40mph
It's random, sometimes it's fine sometimes it's a pig
Started happening today after a 12 mile journey
It's like a misfire

MoorlandBOB · May 13, 2013

fuel pump

thebiglad · May 14, 2013

Jayy said:
Above 40mph
It's random, sometimes it's fine sometimes it's a pig
Started happening today after a 12 mile journey
It's like a misfire

Strange that it's only in 3rd gear - are you sure?

Manual or auto box?

Jayy · May 14, 2013

Sorry, it's not just third, I only tend to rev higher from third onwards
It's over 3000rpm ish
I unplugged the lead to the maf, it made no difference, meaning that's not the culprit
It's booked into garage tomorrow so hopefully they will have an idea

chrissyrabbit · May 14, 2013

Checked oil on ecu plug ??

chrissyrabbit · May 14, 2013

Jayy said:
Sorry, it's not just third, I only tend to rev higher from third onwards
It's over 3000rpm ish
I unplugged the lead to the maf, it made no difference, meaning that's not the culprit
It's booked into garage tomorrow so hopefully they will have an idea

Checked ecu plug for oil ?? Really easy free fix

thebiglad · May 14, 2013

Jayy said:
Sorry, it's not just third, I only tend to rev higher from third onwards
It's over 3000rpm ish
I unplugged the lead to the maf, it made no difference, meaning that's not the culprit
It's booked into garage tomorrow so hopefully they will have an idea

Au contraire mon brave. If there's no difference it means the MAF isn't working !!!

Jayy · May 14, 2013

Il see what the man at garage says
Il check for oil when I'm on lunch tomo, shall I pull the ecu out and unplug the earth from battery?
Whats the best stuff to get rid? I got turps or MEK at work that should do it
I could clean the maf couldn't I with electrical cleaner but I have none ATM

thebiglad · May 14, 2013

Jayy said:
Il see what the man at garage says
Il check for oil when I'm on lunch tomo, shall I pull the ecu out and unplug the earth from battery?
Whats the best stuff to get rid? I got turps or MEK at work that should do it
I could clean the maf couldn't I with electrical cleaner but I have none ATM

I find the best stuff for cleaning the ECU plugs and sockets is aerosol brake and clutch cleaner.

Dave

clutchdust · May 15, 2013

faulty air flow meter can cause the symptom of a missfire and lack of power

Jayy · May 24, 2013

Just an update
Air flow meter was swapped, no change. Ecu terminals fine
Mechanic said to change the fuel pump as the diagnostic tool cannot pick up lack of pressure on it, as its an in tank type

eddmco · May 25, 2013

Sounds like your gearbox oil is low if its an auto, have you got any oil leaks there?

Jayy · May 25, 2013

I should of said
It's a manual

Lack of power in 3rd

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