kwobes

Hi everyone. One of our cars isnt starting. 2002 allroad 2.7t. automatic. when i turn the key everything lights up and looks fine. when i turn it all the way to start the car it just doesnt turn over all the way. it tries and tries but doesnt get there. my guess would be fuel pump but that is only a guess. i went and got some octane booster and put that in and then the car actually did start up but i didnt want to try driving it yet. so after a few minutes i shut it off and then the next day i tried to start again and nothing. and nows it back to not starting. any help will be appreciated. thanks.

snagitseven

Battery?

kwobes

That was one of my thoughts. but all of the lights seem fine and no dimming at all and even tried to jump the car and that still didnt do it.....

G0to60

Is it cranking and not firing or not cranking?

If it's cranking and not firing it could be your fuel pump. These usually don't throw a code so you can't scan for it.

kwobes

its cranking and cranking but just not firing. thanks

G0to60

It also could be your fuel pump relay. It's cheap and easy to replace. I tried that when my fuel pump went out in the hope that was the problem. No luck for me though.

John535is

If its cranking but not starting it could be the crank position sensor.
Can you check for any codes?

The good news is a new sensor is relatively inexpensive ($50 or so for my 2004 2.7t), the bad news is that it is located in a really awkward location. A search on this site has instructions posted from others but its basically accessed from under the car, reach up the side of the transmission, remove skin from knuckles (optional), distort wrist to the point of pain (compulsory) and you will 'feel' but not actually see the small hex head bolt holding the sensor in place.

kwobes

thanks for the replies. will be attacking this later this afternoon. would a fuel pump be worst case scenario in this situation?

kwobes

yes i will check codes this afternoon....ive heard that no codes will come up if its the fuel pump but how about if it was crank position sensor? check engine light has been on but thats for o2 sensor surprise surprise.

vtraudt

did you verify:
- have spark (easy enough)
- have fuel (disconnect fuel line, rag; then key on see if fuel comes out (2 person best)
- if you know how your fuel pump sounds: is fuel pump priming when you turn the key on (pump runs for a few seconds). Also easy: pull up rear seat bench to make listening easier.

That narrows down your troubleshooting areas.