check engine light?!?

4xPhil · 05-20-2009, 12:46 AM

98 4.0 that the check engine light came on. How do you figure out what's wrong?

giostra · 05-20-2009, 01:08 AM

Scan it with a scanner or run the on-board Diagnostics code retrieval, find which error code activated the check engine light, and troubleshoot from there.A good start is having a repair manual, like Haynes, handy. If you don't have one let me know and I can e-mail you the PDF version of the repair shop manual.
Get the tools ready, be ready to get dirty and welcome to the club.

ol"blue · 05-20-2009, 01:18 AM

Check your Private Message.

05-20-2009, 12:46 AM	#1
4xPhil Junior Member Join Date: Nov 2008 Location: Wenatchee WA Posts: 82 My Photos 1998 Cherokee Year: 1998 Model: Cherokee Engine: 4.0 Transmission: Auto Transfer Case: NP 231 Front Axle: Super30 4.56 Eaton E-Locker Rear Axle: 8.25 4.56 Posi Tires: Cooper 11.50 x 32 STT Lift Specifications: 4.5" Rubicon Express Misc Accessories: AA Slip Yoke Eliminator, Woods Drivelines Frt & Rear, 3/4" Frt Spring Spacer, Diff Covers,	check engine light?!? 98 4.0 that the check engine light came on. How do you figure out what's wrong?

05-20-2009, 01:18 AM	#3
ol"blue CF Veteran Join Date: Mar 2009 Location: Dandridge Tennessee & Mich. 48035 Posts: 20,251 My Photos 1997 & 2004 Grand Cherokee Year: 1997 & 2004 Model: Grand Cherokee Engine: 5.2 V8 ; 4.7 V8 Transmission: 4 spd Auto.; 5 spd. Auto Transfer Case: Both Have Full-Time 4WD Front Axle: D30 w/3.73 gear Rear Axle: D44A w/3.73 gear Tires: 245x70x16 Wrangler SRA's Lift Specifications: 97 Orvis Fact. Up Country Misc Accessories: Both have HD Cooling Systems & Tow Packages, '97 has Fact. Skid Plates	Check Engine Light Info. Check your Private Message. __________________ Dan '97 Grand Cherokee Limited Orvis Up Country 5.2, 4X4 '04 Grand Cherokee SE 4.7, 4X4 '04 Saturn Vue 250 HP V-6 AWD '85 Dodge Omni GLHTurbo T-2 282 WHP '86 Dodge Omni GLHTurbo T-2 397 WHP CBW Member # 97 If you're not breaking parts you're not making enough power!!! "I NEED MORE TRACTION, NOT MORE BOOST" Last edited by ol"blue; 05-20-2009 at 01:29 AM..

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05-20-2009, 01:08 AM	#2
giostra Newbie Join Date: Apr 2009 Posts: 8 My Photos 1998 Cherokee Year: 1998 Model: Cherokee Engine: 4.0 L inline 6 Transmission: AW-4 Transfer Case: 231	Scan it with a scanner or run the on-board Diagnostics code retrieval, find which error code activated the check engine light, and troubleshoot from there.A good start is having a repair manual, like Haynes, handy. If you don't have one let me know and I can e-mail you the PDF version of the repair shop manual. Get the tools ready, be ready to get dirty and welcome to the club.

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