Hi, I've lumped a few things together.. what seem to be the remaining problems in my 87 2WD Automatic...

main problem:

erratic rough idle.....or an intermittent random misfire (as my mechanic friend who's been working on this van put it)
the EGR valve doesn't seem to be leaking, and this only happens at idle.. speed or load don't effect it.... one thought is that it's the fuel injector...maybe there is a clog? Any thoughts?

second issue:
have installed new rack and new power steering pump, but the pump continues to make a sort of harmonic whiney sound, especially when cold... and, when the steering is turned all the way left or right, fluid leaks out and burns off, but I can't see from where. the hose from the res to the pump is new, but I"m not sure my friend replaced the others (but also didn't mention they needed it)... there is also a slow leak when the van is stopped... seems to be collecting on the hose next to the coolant outtake hose and then spreading from there to the frame so it's hard to trace. The pump itself has no visible or touchable fluid leaks... and works fine...

third issue:
most of the sensors on the radiator cap are missing or broken, where can I find these? I pulled a few off a camry at a junk yard that looked workable, but haven't tried them yet as i'm a little hesitant to pry off the old ones. The temp sensor works, but the other 2 (or 3, as it seems like there are 4 in total) are not connected or not there...
I'm thinking this could also be a source of the first issue...particurlay the vacuum sensor/hoses which are non-existant...

Please let me know if photos or even a sound recording might help any of you consider this stuff.

To be clear, the van runs/drives really well, have put about 4k on it since I bought it in NC in January, and i've taken quite a few trips around the Northeast with no problems. It also just idled around manhattan traffic in 100 degree weather all day yesterday with no real problems. Planning a cross country trip in august and I'd feel better about it with the above resolved or understood..


thanks