01 cherokee sport starting problem
2001 Sport 4.0. 100K I've been chasing a starting problem and need help before I end up at the dealer.
On cold start I have to turn the engine over at least twice before it starts (3-4 revolutions, stop, start again and it will run). It then misses for 10/20 seconds. After revving the engine the miss will clear and it seems to run fine and will start okay until it has cooled down completely. I still have to use a two-step starting procedure though. Turn it over for 3 or 4 revolutions, stop, then turn it over again before it goes.
I've gotten a check engine code of " PO301-misfire on # 1 cylinder" about 5/6 times and one code of " PO340-crankshaft position sensor malfunction".
I changed the Crankshaft sensor with no change in starting.
I replaced the Coil Rail with no change in starting.
I replaced the plugs twice.
Can anyone direct me to a fix before the dealer gets me.
Last edited by red rider; 08-01-2009 at 12:38 PM.