08-22-2011, 02:49 AM
Join Date: Aug 2011
Newbie nedds help!
First i want to say hi to evryone here!
I will try to make this as simple as i can....
I just purchased a 2001 wrangler with a 2.5 litre engine.
It did need a complete tune-up so figured just do that then go from there.
It ran great for bout' a week then one morning would not start.
So i dug in and this is what i have done:
Check for spark: seems fine.
Checked fuel pressure: at rail: 45-50lbs which is seems ballpark according to jeep book i have. I took fuel rail out with injectors and they fire with cranking of motor.
As said, tune-up: plugs- wires- cap- rotor etc.
Replaced: Crank sensor, TPS sensor, MAP sensor.
I have air, fuel and spark but no start!!!
EVEN STARTING FLUID DOES NOT HELP! Yet there is cranking spark!
And the firing order has been checked multiple times to be sure!
I also lined up the timing marks on the damper to TDC compression and pulled the cap and the rotor is @ number 1 cyl, so no chain jumping!
Heres the funny part........you can crank the engine and nothing happens, BUT... when you let go of the key, it belches thru the throttle body and the engine trys to run in reverse.
This is my first jeep and i want to enjoy it but short of a miracle, im stuck!
I do mechanic work and this really has me and my friends stumped!
SO PLEASE, CAN SOMEONE HELP ME!
Thanks and sorry for such along 1st post, but im desperate.....dave.