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You probably need the egr valve changed or the passages beneath it cleaned of carbon deposits that are blocking up the passage of exhaust gas back into the engine. It's an important emission control device that reduces pollution by lowering combustion temperatures. When they get plugged up, it can cause stalling, so I would have it serviced.
Measure fuel pressure on injector rail - should be 38 to 40 psi. If low or fluctuating, then replace regulator. Another possibility is the in-tank filter being clogged - rare I know, but trash in the gas tank and it's clogged.
Definitely sounds like a fuel problem. I'd change fuel filter and check fuel pump. If pump is running it could still be partially clogged. Try a fuel rail pressure test with a knowledgeable mechanic.
Porbably not getting enough gas or dirty. My 88 dodge caravan did that too until I put a cheap fuel-injector cleaner in with the gas, and started giving it more gas even in lower gears driving around town. Worth a try...
The cause of the low compression could be a valve is not completly sealing or bad piston rings. Depending on weather you have blue smoke out the exaust. If not then I'm sure you have a valve that is not completly sealing. Not some thing to just let go, first try Z-Max. Z-max helps get rid of carbon deposits in the engine.
The relays that you hear clicking away are the problem Im sure. more than one occasion I have seen the relays go out and cause this problem.
The reason the lights dim and the blower slows is the reduction of voltage the alternator is puting out. When the other problem is fixed then this new one will dissappear.
Try cleaning the throttle position sensor like you said. If the contact is dirty it will not run right.
My car has a similar problem, if you take it to AutoZone or Advance Auto Parts they will usually scan it for codes at no charge. My problem is a bad Map Sensor. Hope this helps.
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