Quote:
Originally Posted by mtbtim
Dying at idle would definitely point to the IAC but the OP also had issues while driving. Sounds like a fuel delivery problem to me. I wonder if the fuel pump is on it's last legs. When going uphill, the fuel pump needs to overcome gravity with the pressure it's creating. On flats, the fuel pump has an easier time providing fuel to the engine and on downhills gravity is actually helping deliver fuel to the engine.
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That's a good point, and the IAC would not create pending misfire codes. Lack of fuel would.
Now if only we had a way to read fuel pressure on these darn engines...
