Starting issue

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Jul 12, 2008 | 09:04 PM

jeep98b

Thread Starter

Senior Member

Joined: May 2008

Posts: 603

Likes: 0

From: Charles Town, WV

Year: 2005

Model: Grand Cherokee

Engine: 3.7

Starting issue

When I start the XJ it takes 15 to 20 seconds or more to start. If I let off and try again it starts right away on the second try. And now i have noticed a sputter when I take off. Any ideas?

Jul 12, 2008 | 09:18 PM

Kyle

Registered User

Joined: Sep 2007

Posts: 4,363

Likes: 5

Model: Cherokee

Try turning your key in the on position before you crank it over, this way the fuel is already primed by the pump before ignition.

Jul 12, 2008 | 09:22 PM

Blackburn

Member

Joined: Jun 2008

Posts: 139

Likes: 2

From: Western Pennsylvania

Year: 03Rubicon,2001,1989 2-door(desribed)

Model: Cherokee

Engine: 4.0 H.O. swap

check fuel pressure and you may find a weak fuel pump or faulty fuel pressure regulator

Jul 12, 2008 | 09:28 PM

BlueXJ

Renix Super Guru

Joined: Mar 2008

Posts: 24,653

Likes: 19

From: In yourz postez fissin jurr spelinzs

Year: 1990XJ/1989MJ

Model: Comanche

Engine: 4.0L Renix

It does take 4 seperate pulses from the CPS before the ECU lets the injectors have any power to open. This is to allow time for the pressure build up in the fuel system. Thus as said above the fuel pressure check may be in order.