xj5280
NAXJA Forum User
- Location
- Denver Colorado
I have searched and searched.... Researched and put in parts...
Jeep:99 cherokee i6, 157,xxx miles, AW4
new parts in last 6-8 months:
Water pump/radiator and hoses
Fuel pump
TPS
IAC
O2 sensor
ignition wires
cap and rotor
New parts this week:
Precision fuel injectors
5-90 4 awg battery cables
Big offroad head light kit
Crankshaft pos. sensor
plugs
Ignition module
2 weeks ago
When it got down to 0 degrees here in Denver i went to start my jeep (it sits for a week or two cause it is not my DD) and it had a slow crank and would not fire. Thought it was the battery so switched batteries with my friend with no avail. After letting it sit and randomly starting it with gas pedal to the floor it slowly came to life. I narrowed it down to having to heavy of weight oil in there so i changed it to 5-30w.
Fast forward to the next weekend i get my battery cables and injectors. I go to start it to get it in the garage and it just cranks and cranks then slowly comes to life w/a rough idle (bout 40 degrees out).Let it warm up to operating temp. Change out the battery cables and it comes to life instantly seriously one crank.
Next day install the injectors. Had a problem with the #1 injectors o-ring leaking, replace that and it is sealed. Then got a CEL for the #1 inector not getting a good connection (PO201) giving it a rough idle. fixed that and it ran great!
This weekend i install a big offroad light harness upgrade. went to start it up (40-50 degrees out) and it still cranks and barely starts up. so i replace spark plugs, ignition module, and Crankshaft pos. sensor. Runs like a champ but it again even after being in a warm garage did the Crank...crank.... slow start then rough idle.
The long cranks aren't always happening i can start it one time and it fires right up and sometimes it just cranks. The cranks are fast too not like a old/bad starter (except the 0 degree start up, that was slow). the idle is fine after a few seconds.
It doesn't seem to be weather or rather temperature sensitive it just happens. I checked all the battery grounds and used di-electric grease every where. My battery is good and still holds a charge.
haven't put a gauge on my fuel rail yet but when i pushed on the valve after the jeep had been sitting for a while (3-4 hours) there was still alot of fuel in the rail. making me believe it is not a leaky injector, but not positive.
Any insight would be much appreciated.
Jeep:99 cherokee i6, 157,xxx miles, AW4
new parts in last 6-8 months:
Water pump/radiator and hoses
Fuel pump
TPS
IAC
O2 sensor
ignition wires
cap and rotor
New parts this week:
Precision fuel injectors
5-90 4 awg battery cables
Big offroad head light kit
Crankshaft pos. sensor
plugs
Ignition module
2 weeks ago
When it got down to 0 degrees here in Denver i went to start my jeep (it sits for a week or two cause it is not my DD) and it had a slow crank and would not fire. Thought it was the battery so switched batteries with my friend with no avail. After letting it sit and randomly starting it with gas pedal to the floor it slowly came to life. I narrowed it down to having to heavy of weight oil in there so i changed it to 5-30w.
Fast forward to the next weekend i get my battery cables and injectors. I go to start it to get it in the garage and it just cranks and cranks then slowly comes to life w/a rough idle (bout 40 degrees out).Let it warm up to operating temp. Change out the battery cables and it comes to life instantly seriously one crank.
Next day install the injectors. Had a problem with the #1 injectors o-ring leaking, replace that and it is sealed. Then got a CEL for the #1 inector not getting a good connection (PO201) giving it a rough idle. fixed that and it ran great!
This weekend i install a big offroad light harness upgrade. went to start it up (40-50 degrees out) and it still cranks and barely starts up. so i replace spark plugs, ignition module, and Crankshaft pos. sensor. Runs like a champ but it again even after being in a warm garage did the Crank...crank.... slow start then rough idle.
The long cranks aren't always happening i can start it one time and it fires right up and sometimes it just cranks. The cranks are fast too not like a old/bad starter (except the 0 degree start up, that was slow). the idle is fine after a few seconds.
It doesn't seem to be weather or rather temperature sensitive it just happens. I checked all the battery grounds and used di-electric grease every where. My battery is good and still holds a charge.
haven't put a gauge on my fuel rail yet but when i pushed on the valve after the jeep had been sitting for a while (3-4 hours) there was still alot of fuel in the rail. making me believe it is not a leaky injector, but not positive.
Any insight would be much appreciated.
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