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View Full Version : TJ starting problem (won't start on first try)



jslavic
07-18-2016, 06:43 AM
99 TJ, 4.0, 65K miles.

Ok, so first start for the day, turn the key, hit the starter, Jeep turns over, doesn't seem like it want to start. Key off, immediately back on,hit started, fires right up. Any ideas? I tried holding the key in the ON position for 5-10 seconds before hitting the starter, same thing. I though maybe the fuel pump wasn't getting enough pressure.

I replaced the cap, rotor, plugs, wires a month ago. I don't recall it happening before this but any ideas why these changes would cause this problem?

88wd21
07-18-2016, 09:44 PM
Instead of just holding the key in on, maby try kicking it back to off and back on again before starting to see if it needs a little extra prime like a weak fuel pressure regulator/fuel pump not priming enough at initial startup?

jslavic
07-19-2016, 07:00 AM
I tried that, on/off/on method, same thing. Did some googling, everything pointed to fuel pump or fuel regulator. I'll just replace it an hope for the best.

asmithc
07-21-2016, 12:17 PM
I had this in my 2003 Rubicon. It was the fuel pump.

jslavic
07-22-2016, 06:35 AM
Thx for the help. Fuel pump going in tonight or tomorrow! I'll keep you posted.

muddeprived
07-23-2016, 11:02 AM
I sorta have the opposite issue. I can start my 99 SE on the first try no problem but the 2nd or 3rd try is always like a struggle. The first start is like "chug chug start" but any starts after that 1st are kinda "lazy". It's as if it doesn't want to start but still does.

It never failed though. My tank skid is rusted 75% of the way across so that's coming out and I'm going to do the pump while I'm at it. It has 105k on it so it's due.