hey
i have a Nl fairlane with a rebuilt 6 in it with gas and a T5 gearbox..
it has a 1.6.7.5 cam in it..
Extractors 2.5" exhaust... k&n filters
also at the same time got a new coil plugs leads the TFI unit was changed about 6 months ago

also it was rebuilt with a eb block so the knock sensor cant be plug in...
worked just fine for a month or so..

But one day started to over rev all by itself, anywhere from 2500rpm to 3000rpm
i have replace the ICS with a few different ones even one off my other car... nothin
also change the TPS the black thing on the throttle body... with another 3 different ones
and tried one map sensors .....

and its still over revving...

i got told to change the throttle body coz that could be the problem still nothin/ NO change
even taken the battery out a few times but nothin....

ATM the only way to use the car is to leave the ICS sensors unplug .....

doe anyone have any idea whats going on...??????

maybe a vacume leak?

hey
cant hear one ATM there were all new gas kits when the motor was built and work well for about a month then stop the other day.. where could i get a vac leak check the manifold about 2 times to make sure its not from there..

i have even changed ECU's with my other car and that didn't help i put the ECU and sensors i pull off the car over revving and put them back on my other car that one still works fine???

thanks

get some " start ya basterd " or some carb and throttle body cleaner and spray the vac tree at the back top of the manifold..there is also a plastic F piece under the throttle body that can crak spray that too and if the revs change you will have found a leak...or if in doubt spray every vac line and connection in the engine bay...there are heaps of them lol

ok thanks ill give that a shot this week when i get time and let u know how i go...

thanks

This Is the Motor in the Nl Fairlane

 

 

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