I removed the pressure regulator from only the fuel distributor end, and not much fuel leaked out, and it still gave me the access I needed. Mark the position of the old pot when removed - the new one will be close if set in the same position.

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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'91 MB 190E 2.3
'08 RAV4 Ltd 3.5
'83 Lazy Daze m'home 5.7