Fuel pump sending unit or fuel pump regulator??
#1
Member
Thread Starter
Join Date: Aug 2011
Posts: 116
Likes: 0
Received 0 Likes
on
0 Posts
Model: Cherokee
Fuel pump sending unit or fuel pump regulator??
So I recently was up north in my 1998 XJ straight 6 4.0L and it has no lift yet and me and my cousins were offroading and we get to a dead end trail so we turn our jeeps around and I didn't see this small tree stump so I drove over it and my jeep shut off and did not turn back on it was just cranking and cranking so I had my jeep towed back and to our campsite and the next day we go to a shop and he said I disconnected something into the gas tank like it was sending fuel to the top of the tank and nowhere else so he connected it keep in mind I'm camping and cannot drop a tank with no tools. So now it starts but very slow it cranks for a while and if I use my remote start it cranks and shuts off I have to turn the key and stop and do it like two times then it starts the third time right away is it the fuel pump regulator or the fuel pump sending unit? And I hear shaking back there too and it's bad but nothing I see is lose. Can anyone help??
#2
CF Veteran
Join Date: Aug 2010
Location: Williamsport, Pa
Posts: 1,168
Likes: 0
Received 3 Likes
on
3 Posts
Year: 1997
Model: Cherokee
Engine: 4.0L
Maybe some more information would help. Where did this tree stump hit? If it hit the tank pretty hard it could have broken the fuel pump inside the tank. The fuel pump assembly is spring loaded against the bottom of the tank.
#4
Member
Thread Starter
Join Date: Aug 2011
Posts: 116
Likes: 0
Received 0 Likes
on
0 Posts
Model: Cherokee
Originally Posted by Cherockee
Maybe some more information would help. Where did this tree stump hit? If it hit the tank pretty hard it could have broken the fuel pump inside the tank. The fuel pump assembly is spring loaded against the bottom of the tank.
#5
CF Veteran
Join Date: Aug 2010
Location: Williamsport, Pa
Posts: 1,168
Likes: 0
Received 3 Likes
on
3 Posts
Year: 1997
Model: Cherokee
Engine: 4.0L
hard to tell. Have you ever seen the fuel pump assembly? It's possible that there is a crack in one of the tubes connecting the the actual fuel pump to the pickup tube or to the fuel regulator.
I suppose if you want you could try getting the fuel pressure checked to make sure it around 50psi when running and holds pressure for a short time (at least 30psi for 15 to 20 minutes.
Either that or you can keep guessing.
I suppose if you want you could try getting the fuel pressure checked to make sure it around 50psi when running and holds pressure for a short time (at least 30psi for 15 to 20 minutes.
Either that or you can keep guessing.
#6
CF Veteran
Join Date: Aug 2010
Location: Canton, MI
Posts: 8,357
Likes: 0
Received 90 Likes
on
74 Posts
Year: 1999
Model: Cherokee
Engine: 4.0
Jbeaujean28,
Check the length of the fuel supply tube that runs along the left side under the Jeep, next to the brake line, from the pump (tank) to the fuel rail. It may have been pinched.
Check the length of the fuel supply tube that runs along the left side under the Jeep, next to the brake line, from the pump (tank) to the fuel rail. It may have been pinched.
Thread
Thread Starter
Forum
Replies
Last Post
NM-XJ
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
18
10-23-2018 04:21 PM
Travis88XJ
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
19
03-12-2016 07:26 AM
Tcq192
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
7
10-23-2015 09:25 AM
Ricardo Siqueiros
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
2
09-03-2015 09:17 PM
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)