Fuel pump good battery good new sensors but won't start unless engine is cold any suggestions o what might be the problem
You'll need to figure out if you are loosing spark or fuel when it fails to start up to know which system to test.
SOURCE: car won,t start unless you pump the fuel
Start with the fuel pump and work your way forward. You should never have to touch the throttle in a fuel injected car.
SOURCE: A new in-tank fuel pump
If you have no pressure at the fuel rail, then I would suspect a bad pump or a problem with the fuel pick up in the tank.
SOURCE: idrove my sunfire yesterday now today it cranks
i had aproblem with my 03 sunfire when the key starts to wear out it has a security problem in the ignition switch you might need a new key.
SOURCE: Pontiac Aztek 2001 - 3.4l (non-GT); Codes: P0135, P0141, P0420 all O2 + Converter. Ideas on problem?
P0135 bank 1 sensor 1 open or short in wires,bad connections,bad sensor ,or bad ecm. P0141 bank 1 sensor 2 same diag as P0135. P0420 cat below threshold open or short, or faulty Ho2s sensors.you may have several problems. start with sensors circuit if good change sensors if not trace to ecm if reading not right replace ecm if all good replace sensors clear codes retest drive two drive cycles for cat to clear tests. then with no dtcs present test fuel pressure , injectors,then ignition system ,timing valves ,map,maf sensors,throttle sensor,crank sensor cam sensor, compression.
SOURCE: new battery, car won't start
you should check the starter or ignotion, may be there have some problem on them.
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autel ms509
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