Greetings. New to thread. I apologize if this has been covered.
Just bought a 95YJ 2.5L fuel injected. Have already searched and reviewed fuel pump problem threads and suspect this may be a fuel pump problem. BUT....just in case I thought I would put the symptoms out.
In the morning, the YJ just cranks without firing. Good battery - good power.
When the key is turned on you cannot hear the fuel pump operating.
Leaving the key on (and cranking a few times) 5 minutes later you can hear the fuel pump come on. She fires up fine and runs like a top! After that, during the day sometimes the fuel pump engages and sometimes not during starting. Almost always after 5 minutes. The fuel pump finally goes on and it starts right up.
I have changed the fuel pump relay. That did not help. I have changed the fuel filter. It did not help. (by the way, is the fuel pump relay supposed to make a clicking sound when it's working?). Any other ideas? The car dealership I bought this from did a steam or pressure wash of the engine compartment. I did replace the TPS for an earlier code 24. That fixed that problem. The gas tank has new bolts holding it up indicating maybe it's been lowered and perhaps work done with it (or in it - fuel pump?) Can fuel pumps go bad soon after they're installed? Thanks in advance for any ideas or help.