hard starting

K

kronc42

NAXJA Forum User

Location

brighton

• Dec 29, 2011

• #1

my 97 jeep cherokee 4.0 is have staring problems. it sometimes starts right up no problems and others it cranks for aprox 5-10 sec befor starting. no codes no starting system problems. I have replaced the cap, wires exc... any thoughts on a sensor it could be
thank you

 

K

kronc42

NAXJA Forum User

Location

brighton

• Dec 29, 2011

• #2

I also replaced the fuel pump a year ago however I have not checked the fuel pressure yet. but I will do so

 

R

RWSXJ00

NAXJA Forum User

Location

Eastern Shore, VA

• Dec 30, 2011

• #3

Not sure about 97's but have you tried priming it before hitting the starter? Turn the key to "on" let the fuel pump run then switch to "off" then start the motor. Check valve sticking might do this.

 

K

kronc42

NAXJA Forum User

Location

brighton

• Dec 31, 2011

• #4

ill see if that helps. I think my fuel pump is not holding pressure so its causing rough starting thanks for the advice

 

C

Corprin

NAXJA Forum User

Location

MLPS

• Dec 31, 2011

• #5

sounds like the common check valve issue, but could be something else. Check the pressure drop at the rail.

To combat this problem in my '99 I turn the key on to prime the rail, off, back on to prime again, and she starts up in a few cranks.

 

N

nitejohn

NAXJA Forum User

Location

upstate new york

• Dec 31, 2011

• #6

My "99 just startted doing this, thanks for the starting tips & maybe the solution!