CMF_wayne green
» CMF Member
just changed throttle body on k11.once started found revs to be high please help me to bring revs down
revs after changing throttle body
- Thread starter CMF_wayne green
- Start date
CMF_frank2
» CMF Memberwayne
the throttle stop is on the n/s bottom of the t/b (8mm spanner and tiny allenkey)
frank
the throttle stop is on the n/s bottom of the t/b (8mm spanner and tiny allenkey)
frank
CMF_nz_aj
» CMF MemberThe throttle cable should be slack at idle.
If it is & you still have a high idle, consider the following:
https://micra.org.uk/cmf/message/14278
There be a blue screw thingo on one edge near the brown plug.
Brown plug which connects to a black connector which has 2 screws holding it onto the TB. It is on the driver's side and is easily visible without removing anything.
Blue screw thing is just underneath it, towards the rear of the TB.
You need to turn the car off, unplug that brown plug, start it back up and rev it from idle to 3000rpm 3 times and then adjust the screw.
Anti clockwise for more revs and clockwise for less revs.
I used a house key to adjust mine.
Nissan says it should idle at 650rpm. I found anywhere between 650rpm and 750rpm is good though. Mabye even higher if your aircon causes a fair old power draw on the motor.
Once you have it at an RPM you like you can turn it off, and put the brown plug back in. Start it up an see how it went.
If it is hard to correct the idle - you may have an air leak somewhere.
When you turn the air con on the ECU will start the more idle valve on the throttle body and create more revs. Same goes for turning on lights and heater fan (or atleast it does on mine) :-D
Make sure air con etc is off when you set the idle.
Suggestion, THIS NEEDS TIDYING UP & PUTTING IN THE TECHNICAL ARTICLES SECTION
If it is & you still have a high idle, consider the following:
https://micra.org.uk/cmf/message/14278
There be a blue screw thingo on one edge near the brown plug.
Brown plug which connects to a black connector which has 2 screws holding it onto the TB. It is on the driver's side and is easily visible without removing anything.
Blue screw thing is just underneath it, towards the rear of the TB.
You need to turn the car off, unplug that brown plug, start it back up and rev it from idle to 3000rpm 3 times and then adjust the screw.
Anti clockwise for more revs and clockwise for less revs.
I used a house key to adjust mine.
Nissan says it should idle at 650rpm. I found anywhere between 650rpm and 750rpm is good though. Mabye even higher if your aircon causes a fair old power draw on the motor.
Once you have it at an RPM you like you can turn it off, and put the brown plug back in. Start it up an see how it went.
If it is hard to correct the idle - you may have an air leak somewhere.
When you turn the air con on the ECU will start the more idle valve on the throttle body and create more revs. Same goes for turning on lights and heater fan (or atleast it does on mine) :-D
Make sure air con etc is off when you set the idle.
Suggestion, THIS NEEDS TIDYING UP & PUTTING IN THE TECHNICAL ARTICLES SECTION
CMF_wayne green
» CMF Membernz aj thanks for your advice.imanaged to get my idle speed down.throttle body seems to be ok