Here's one for everyone. I have an issue right now with my 2000 EV GLS with the 12 valve motor.
When ambient temps are high--mid 80s or so--and am running the van at highway speeds ~70mph or so, and running the AC on manual with air directed to vent and floor, fan speed high, and temp set to about 68-69, for about 40 minutes or so....
the van loses power and goes into what can only be described as "limp mode" and a high-pitched whine can be heard from somewhere up front. It is easier to hear inside than out. If you pull over to the side, turn off the AC, idle for a few minutes, the whine does not go away, but you can drive off again normally, leaving the AC off.
The first time this happened, the MIL came on but then turned itself off after a few drive cycles. It happened a second time and I pulled the codes, which are:
P1128, confirmed (lean condition)
P0442, pending (evap leak, small, been chasing this one for awhile)
It happened a third time, the MIL did not come on, but the codes are the same.
The shop had it yesterday and drove it, but did not replicate. The ambient temps were lower, though.
Would really like to sort this out as we are planning to head to CO with it in a few weeks and Kansas with no AC is not my idea of a good time.
Any insight?