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Originally Posted by sbourg
Do not count on replacing the pot to solve your problem. The EHA is controlled by analysing many different inputs, so disabling it simply points to a problem with one sensor. When the pot was causing problems with ours, the symptom was an irregular idle with hunting. This is to be expected, because the pot wiper wears this position (idle) more than off-idle spots. Even though the pot determines acceleration enrichment, this is off-idle operation and is not as likely where it would be worn.
Steve
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Thanks for the reply Steve
Do you have any thoughts on what else might be causing the hesitation, if not the pot? With only 65000km on the clock I admit that I was a bit surprised that the pot would be worn enought to cause this problem but from searching this and the 190revolution forums there seems to be a fairly consistent link between a worn pot and acceleration hesitation. I'm open to any other possibilities though. I had considered the O2 sensor and the OVP but couldn't find any posts that indicated a correlation between a dud O2 sensor or OVP and this kind of hesitation.
Thanks