I bought this car and it will crank but will not start, changed fuel filter, spark plugs, cleaned fuel injectors, checked timing, checked for spark and have good spark. I cleared all the codes and rechecked the codes and no codes come up. the old codes read bank 1 O2 1and 2 sensor bad, speed sensor bad, manufacture. specific codes are circ. malf, ckt range/perf, peddle position sensor. I need help can not fix please any suggestions welcomed

 

also the fuel pump I was told is new but when you turn the key to the on position it runs then shuts off then comes back on and keeps repeating this cycle, also when the key is turned to the on position the radiator fan comes on and goes off then comes back on and this cycle continues also.

Edited February 16, 201412 yr by jschilling20

Sounds like the previous owner had a fuel delivery problem and replaced the pump and that wasn't the problem. The pump I believe is recycling because of too low fuel pressure. If the pump is good, then the only thing I can think of is a bad fuel pressure regulator or a badly leaking fuel injector. But before replacing even more parts, make sure the hose between the engine and fuel filter is the right one. Someone may have crossed the fuel to engine hose and the fuel return hose. 

clear the codes and see which come immediately back. Possible bad grounds connections or loose harness connector ?

 

after cranking, pull the plugs and see if one is wet. Also, try cranking with the pedal on the floor. That is the 'clear flood' mode for a FI car.

 

When you checked the timing, the arrow/triangle was about 3 o'clock position right?

Also make sure your green test connectors are not plugged in under the dash.

This would make the fans cycle also.

 

O.

Edited February 22, 201412 yr by heartless