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2004 fiesta "eac fail"

3.3K views 5 replies 5 participants last post by  apd06  
#1 ·
Hello all. I have 2004 duratec engine and am having a "eac fail" when I initially pull off but only when the engine is stone cold (early morning),this puts the engine into idle mode, once the engine has warmed up its ok all the time. Have checked with a diagnostic checker "P2135" which means fault with "throttle positioner sensor" , my question is why would I only be getting this when the engine is cold & the engine is idling slightly higher 1200rpm.
 
#5 ·
My friend had a similar issue - turns out to be a almost had it battery, which was upsetting the EAC (Electronic Accelerator Controller?) when starting the car due to the battery volts dropping too much. New battery and its been fine since. That was a year ago now.
 
#6 ·
I had near enough the exact same problem which will eventually turn into a stall on cold start theres a pipe next to the throttle body that goes into the inlet manifold and connects to the engine by a filter had split and I just bought some 8mm wide hose off ebay and its sorted the problem out and no error code being flagged no more.

You can see which pipe it is if you look on my whats this pipe called thread a few down on here (which nobody answered btw haha)