Mud-club

Vehicle & Technical => Range Rover => Topic started by: feyaz on August 29, 2006, 14:19:06

Title: 3.5 flapper airflow meter on a 3.9?
Post by: feyaz on August 29, 2006, 14:19:06

Hi, does anyone know if a 3.5 flap airflow meter will work on a 3.9? does it just need the CO idle screw adjusting, or will it just not work?

I tried it on there but it was idling at about 2500rpm.

thanks.

Title: 3.5 flapper airflow meter on a 3.9?
Post by: andyb on August 29, 2006, 19:50:52

3.9 air flow is a 'hot wire' meter and not a flapper. They probably give different 'readings' and given that the ECU is also different I'd say that it won't work.

ICBW  :)

Title: 3.5 flapper airflow meter on a 3.9?
Post by: feyaz on August 29, 2006, 23:43:42

mine is the early 3.9 (1989) which was flapper, then replaced shortly after by hot wire. so it's the same type of air flow meter

Title: 3.5 flapper airflow meter on a 3.9?
Post by: muddydigger on August 30, 2006, 09:05:03

one would asume that if the conections are the same ie the plug conections are the same then it should work. the easiest way is to see if you can borrow one from some one  to see.

Title: 3.5 flapper airflow meter on a 3.9?
Post by: Range Rover Blues on August 31, 2006, 15:47:52

I don't think it will work as they are callibrated differently, going by the diagnostic checks given in the Haynes.  You could try it of course as they are cheap as fried potato products on E-Bay at the moment.