help 4age wont rev!?!?
06-30-2010, 03:26 AM
Post: #13
.... don't blow :)
The ECU needs a signal to tell it to increase fuel when the throttle is
opened. This comes from the flapper opening (AFM) or from the MAP
sensor. At idle the engine has very little fuel, and if the ECU does not
increase fuel when you open the throttle, the engine goes... blaaagh Smile

Check that your load sensor (AFM or MAP) outputs a signal that varies
with load. Push the flapper open by hand on an AFM engine and monitor
the pins (can't tell you which ones offhand). On a MAP sensor apply some
vacuum by sucking on the hose (you can get your best g/f to help) and
see if you get a varying output.

Best if you can monitor the voltage at the ECU end of the wiring harness,
because that way you are checking the wiring as well. I'm pretty sure all
the correct test values are in the FSM.

Cheers... jondee86
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Messages In This Thread
help 4age wont rev!?!? - ep71 - 06-27-2010, 06:11 PM
[] - PatrickAE86 - 06-27-2010, 06:44 PM
[] - Ivan141 - 06-28-2010, 07:25 PM
Engine running backwards ?? - jondee86 - 06-28-2010, 10:21 PM
[] - ep71 - 06-28-2010, 10:39 PM
[] - Ivan141 - 06-28-2010, 10:48 PM
[] - jondee86 - 06-29-2010, 12:44 AM
[] - ep71 - 06-29-2010, 01:41 AM
Smooth transitions are good :) - jondee86 - 06-29-2010, 02:33 AM
[] - ep71 - 06-29-2010, 10:17 PM
[] - Bean - 06-29-2010, 10:35 PM
[] - ep71 - 06-29-2010, 11:24 PM
.... don't blow :) - jondee86 - 06-30-2010 03:26 AM
[] - ep71 - 06-30-2010, 03:05 PM

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