Novak Conversions Jeep Wrangler TJ radiator

1998 4.0 automatic turning off mid drive

CazzyCazzy

New Member
Original poster
Joined
Dec 2, 2023
Messages
15
Location
New York
Basically it wouldn’t start up, it would crank but the engine never turned on. Eventually I swapped out the fuel pump relay with the other relays until it turned on. Until a few days later, Jeep won’t start but this time I got a new relay from advanced auto parts to put in, but that didn’t start up the Jeep either. So I just kept mix and matching the relays until it eventually started but now, it starts but turns off mid-drive. Is it that I got the wrong relay or could it be the crank sensor is messed up entirely?
 
Other than relays what diagnostics have you done?

Do you get 12v on the little stud on the starter when cranking?

Have you checked fuel pressure?

-Mac
 
Other than relays what diagnostics have you done?

Do you get 12v on the little stud on the starter when cranking?

Have you checked fuel pressure?

-Mac
Other than wiggling the connectors while the engine is on to see if it cut off or seeing if there’s any corrosion or damage in the fuse box, no other diagnostics.
 
Other than wiggling the connectors or seeing if there’s any corrosion or damage in the fuse box, no other diagnostics.

Other than wiggling the connectors while the engine is on to see if it cut off or seeing if there’s any corrosion or damage in the fuse box, no other diagnostics.
 
Novak Conversions Jeep Wrangler TJ radiator