Car reving by itself

[ryanbrook]

MK4 Golf 1.6sr reving between 1200-1400 by itself. I unclipped the cable from the maf sensor and the problem goes away but soon as i put it back on the problem jumps back. Does anyone think this is the problem. I cleaned the throttle body the other day aswell but looking at vagcom the throttle body angle is at 9 which is about right i think.

[Steve_PD]

It will be the MAF

http://www.golfgtiforum.co.uk/index.php?topic=94783.0

[james2]

Did the problem come after cleaning TB .If not scan it or get a new maf.

[ryanbrook]

Yes it came after cleaning the maf and changing the battery. I didn't remove the TB at all just took the air intake pipe off and cleaned what i could get to with Wynns cleaner. VAGCOM also brings up code "00533 - Idle speed regulation".

[Steve_PD]

00533 - Idle Speed Regulation: Adaptation Limit (Add) Exceeded

Possible Symptoms
Bad Fuel Economy
Possible Causes
Air Leak between Mass Air Flow (MAF) Sensor and Engine
Injector(s) faulty
Fuel Pressure Regulator faulty
Throttle Body faulty
Intake Air Filter dirty

Possible Solutions
Perform Throttle Body Adaptation
Check Hoses and Pipes to/between Components
Check Intake Air Filter
Check Fuel Pressure Regulator
Check Exhaust Gas Recirculation (EGR) Valve
Check Injector(s)

[ryanbrook]

Ohh right. So you not think it is the MAF. i was certain it was. it would go fine when i unplugged it. Having second thoughts. What would be your guess?

[james2]

I must be something you touched. Go over it again.  You could of killed you maf cleaning it.How long was the battery disconnected for ?

[topher]

i thought the tb should be between 5 and 7 degrees at idle on those engines. did you do a throttle body adaptation after you cleaned it? was it revving strangely straight away after cleaning the throttle body or has this developed since?

[james2]

i thought the tb should be between 5 and 7 degrees at idle on those engines. did you do a throttle body adaptation after you cleaned it? was it revving strangely straight away after cleaning the throttle body or has this developed since?

Yes it came after cleaning the maf and changing the battery. I didn't remove the TB at all just took the air intake pipe off and cleaned what i could get to with Wynns cleaner. ^^^

[ryanbrook]

Soon as i cleaned the TB i am sure the problems started with the idling. What was happening was the car wasnt starting right away. Taking a few times so i changed the battery (unplugged a few minutes) and the problem hasnt came back. Just the horrible idling is still here. I didnt touch the TB though and i tried cleaning the maf today( after the problem started.