new to the jeep world{no start}
12-09-2013, 07:42 PM
#1
Newbie
Thread Starter
Join Date: Dec 2013
Posts: 4
Likes: 0
Received 0 Likes
on
0 Posts
Model: Cherokee
new to the jeep world{no start}
ok so i have a 98 jeep cherokee sport 4x4 having some starting problems
new pARTS:
NEW COIL good spark felt first hand
CAM SENSOR new replaced just bc.
CRANK SENSOR replaced with new when threw a code
PCM IS GOOD
new fuel pump {with 51 psi} threw a fuel pump relay short replaced pcm AND NOW GONE ......
relays are good
timing is correct tdc ect.
when turning on the key fuel pump does not prime and come on i can jump the relay and thats how i get the fuel pressure when turning over sometimes it will back fire could there be an ignition problem? not allowing it to start
new pARTS:
NEW COIL good spark felt first hand
CAM SENSOR new replaced just bc.
CRANK SENSOR replaced with new when threw a code
PCM IS GOOD
new fuel pump {with 51 psi} threw a fuel pump relay short replaced pcm AND NOW GONE ......
relays are good
timing is correct tdc ect.
when turning on the key fuel pump does not prime and come on i can jump the relay and thats how i get the fuel pressure when turning over sometimes it will back fire could there be an ignition problem? not allowing it to start
Last edited by tstewartxj; 12-09-2013 at 07:44 PM.
12-09-2013, 08:42 PM
#2
CF Veteran
Join Date: Jul 2012
Location: SD
Posts: 1,395
Likes: 0
Received 0 Likes
on
0 Posts
Year: 1998
Model: Cherokee
Engine: 4.0
I'm sorry, but I'm really having trouble following your post.
You said it has "good spark", but then ask about a possible ignition issue. Also, I don't understand "replaced pcm AND NOW GONE ".
Can you clear some of this up, and we'll try to give you a hand?
You said it has "good spark", but then ask about a possible ignition issue. Also, I don't understand "replaced pcm AND NOW GONE ".
Can you clear some of this up, and we'll try to give you a hand?
12-10-2013, 11:15 PM
#3
Newbie
Thread Starter
Join Date: Dec 2013
Posts: 4
Likes: 0
Received 0 Likes
on
0 Posts
Model: Cherokee
OK sorry about that ..
before I replace the PCM it was throwing a fuel pump short circuit relay code but I'd check the relay and it was good so I replaced the PCM and the code has not came back onand I replace the fuel pump and is pushing goodpsi to fuel rail but when I turn on the key the fuel pump does not prime and come on I jump the fuel pump relay and still no start and Isaid in the previous form that I replace the crank position sensor cam sensor ignition coil and I made sure that the timing was top dead centerI'm kinda lost don't know what to check ur do nextthanks for getting back to me by the way
before I replace the PCM it was throwing a fuel pump short circuit relay code but I'd check the relay and it was good so I replaced the PCM and the code has not came back onand I replace the fuel pump and is pushing goodpsi to fuel rail but when I turn on the key the fuel pump does not prime and come on I jump the fuel pump relay and still no start and Isaid in the previous form that I replace the crank position sensor cam sensor ignition coil and I made sure that the timing was top dead centerI'm kinda lost don't know what to check ur do nextthanks for getting back to me by the way
12-11-2013, 08:16 AM
#5
CF Veteran
Join Date: Sep 2011
Location: Riviera, Texas
Posts: 4,172
Likes: 0
Received 4 Likes
on
4 Posts
Year: 1998 Sport
Model: Cherokee
Engine: 4.0
OK sorry about that ..
before I replace the PCM it was throwing a fuel pump short circuit relay code but I'd check the relay and it was good so I replaced the PCM and the code has not came back onand I replace the fuel pump and is pushing goodpsi to fuel rail but when I turn on the key the fuel pump does not prime and come on I jump the fuel pump relay and still no start and Isaid in the previous form that I replace the crank position sensor cam sensor ignition coil and I made sure that the timing was top dead centerI'm kinda lost don't know what to check ur do nextthanks for getting back to me by the way
before I replace the PCM it was throwing a fuel pump short circuit relay code but I'd check the relay and it was good so I replaced the PCM and the code has not came back onand I replace the fuel pump and is pushing goodpsi to fuel rail but when I turn on the key the fuel pump does not prime and come on I jump the fuel pump relay and still no start and Isaid in the previous form that I replace the crank position sensor cam sensor ignition coil and I made sure that the timing was top dead centerI'm kinda lost don't know what to check ur do nextthanks for getting back to me by the way
How are you getting good pressure if you turn the key on and the pump isn't coming on??????
Take a breath and slow down and reread what you write to make sure it makes sence when you are try to explain what it going on. You're not going to get very good answers if you are not clear of the problem.
12-12-2013, 10:05 PM
#6
Herp Derp Jerp
Join Date: Nov 2011
Location: Parham, ON
Posts: 18,251
Likes: 0
Received 13 Likes
on
12 Posts
Year: 1999
Model: Cherokee
Engine: 4.0L OBD-II
Indeed, this is remarkably unclear.
In a list manner tell us what you've done and what your troubleshooting results were. Don't try to make sentences.
In a list manner tell us what you've done and what your troubleshooting results were. Don't try to make sentences.
12-13-2013, 01:00 AM
#7
CF Veteran
Join Date: Oct 2011
Location: Yakima
Posts: 1,339
Likes: 0
Received 0 Likes
on
0 Posts
Year: 1990
Model: Cherokee
Engine: 4.0 I6
You said you replaced the cam sensor. Are you sure you got the firing order right when you put the wires back on the cap?
Looking at the cap from the passenger side fender, number 1 is at the 5 o- clock position. Order is clockwise, 153624.
The popping you mentioned sound like its timing or firing order.
Looking at the cap from the passenger side fender, number 1 is at the 5 o- clock position. Order is clockwise, 153624.
The popping you mentioned sound like its timing or firing order.
Trending Topics
12-16-2013, 06:55 PM
#8
Newbie
Thread Starter
Join Date: Dec 2013
Posts: 4
Likes: 0
Received 0 Likes
on
0 Posts
Model: Cherokee
hey guys sorry was still trying to figure this site out
oleblue / yes the timing is correct and at 5 oclock at tdc
yes i have spark at the plugs and i switched the relays
i was getting fuel pressure by jumping the fuelpump relay
oleblue / yes the timing is correct and at 5 oclock at tdc
yes i have spark at the plugs and i switched the relays
i was getting fuel pressure by jumping the fuelpump relay
Thread
Thread Starter
Forum
Replies
Last Post
Gtrsrlly
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
5
08-25-2015 11:50 AM
Ye Ol' Cherokee
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
0
08-22-2015 01:43 PM
Brynjaminjones
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
2
08-22-2015 05:01 AM
heatherwatt
Stock Grand Cherokee Tech. All ZJ/WJ/WK Non-modified/stock questions go here!
0
08-21-2015 06:42 AM
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)