hi there i have a 95 quest and i do some mechanic work i bought the van for cheap in my opinion and ive replaced the (MAS) mass airflow sensor, the fuel pump, the wires were replaced and i did the plugs i droped the tank cleaned it and when i changed the fuel pump because the other one died it ran fine but the float was off and said no fuel i know there is over half a tank i put it up by hand and it drove great then wouldn't start in a parking lot so i put it on flat ground and it started but was sluggish n tried shutting off got home and checked my plugs, replaced the distributor rotor, and cleaned the cap, cleaned the o2 sensor, cleaned the air intake and throttle body and checked all the vac lines made sure there was gas flowing and spark but it just turns over and wont start my (TPS) throttle position sensor makes a click noise constant until i unplug it n plug it back in any thoughts on why it wont run
any help or thoughts are appreciated. thank you