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Old 10-01-2012, 07:47 PM
omitech's Avatar
omitech omitech is offline
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Join Date: Oct 2009
Posts: 15
Default Help with Fiat Stilo 16v, 02 plate.

We have a Fiat Stilo 16v on a 02 plate, it wont rev and codes P1220, that would seam to be the throttle actor, the idle is a bit lumpy, it will rev a bit up to about 2000 rpm, but i have seen that the throttle disc wont move at all.

In thinking that the fault was the throttle actor, going by the code P1220 and the fact that the disc in the actor is not moving we got a sccond hand actor, the bad news is it is still the same , can anyone give help please.
Thank you Omitech.
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Old 10-01-2012, 09:51 PM
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Bob the Boss Bob the Boss is offline
Join Date: Oct 2009
Location: Madley in Herefordshire Uk.
Posts: 663

Hi, we have had trouble with the ECU and this code, it is trying to say that the feed back is wrong.
All 6 cables of the actor go back to the ecu on only one of the plugs, remove the plugs and bleep them to check they get there.
There are two pots, one high and one low, check by running the motor and moving the throttle plate, you will need to run it as the relay will switch off with just the key on, be careful there is not a backfire as you move the plate open, you need to see two working tracks that look clean as you open the disc.

Find the two Motor wires and test the motor resis: from wire to wire this should be around 2.7 ohms.

If tests are ok the main engine ECM maybe at fault?
Gibbins Motors Technology Uk
The more you know the less you know!!
Bob the Boss forum owner

Last edited by Holly Goodhead; 18-11-2016 at 02:06 PM.
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