Go Back   Tahoe Forum - Chevy Tahoe Forum > 1994 - 1999 Chevrolet Tahoe/GMC Yukon Year Models > General Tahoe/Yukon Discussion Forum

Register to remove these ads.
General Tahoe/Yukon Discussion Forum General Discussion Forum



Reply
 
Thread Tools Display Modes
Old 11-04-2017, 03:36 PM   #1
eknsar01
Tahoeforum Newcomer
 
Join Date: Oct 2017
Posts: 2
eknsar01 is on a distinguished road
Default Exorcism for a 1999 GMC Yukon ? Help !

Hi There. I am a new member to any discussion group so if I do something wrong please let me know ! I have a 1999 Yukon SLT 4WD with 230,000 miles on the clock. I have had it since it had about 45,000 so I know its history.The recent problem is this: if it sits more than overnight it becomes VERY hard to start, a problem that has never occurred before. Usually 5 sec crank and is running. Now spends 5 min or so cranking, backfiring through the engine , trying to start.Once it starts, runs fine and will work fine for the rest of the day, starting & stopping. Good battery, ignition seems fine, seems to be a fuel problem but nothing seems to work. Cleaned fuel line,new fuel filter,fuel pump,checked pressure regulator, nothing seems to work. My mechanic ( at a chain auto repair shop) who has worked on it for about 15 years is stumped. The only thing that has come up is the oxygen sensors are now out in both banks.
I use this truck as a member of a volunteer Search & Rescue Unit located here in North Alabama, and I need something to work. Lots of good history in this truck and I don't want to give up. Anyone have any Ideas ? Thanks for listening. Ed
eknsar01 is offline   Reply With Quote
Old 11-06-2017, 02:37 PM   #2
Zipper369
Full Access Member
 
Zipper369's Avatar
 
Join Date: Feb 2013
Location: Southern Maryland
Age: 25
Posts: 51
Zipper369 is on a distinguished road
Default

Welcome to the Tahoe forums! This is the first I've been back on here in a while, but everytime I asked questions on here I got pretty good answers. Hopefully you find this place as helpful and useful as I have. Anyway, on to your question...

I'd start with the O2 sensors if you already know they're bad. Mine went out around 190k miles and it had a hard time starting and idling. Also, have you tried turning the ignition on for a few seconds to let the fuel pump build pressure before trying to start it? Just a thought.
Zipper369 is offline   Reply With Quote
Old 11-06-2017, 02:54 PM   #3
eknsar01
Tahoeforum Newcomer
 
Join Date: Oct 2017
Posts: 2
eknsar01 is on a distinguished road
Default

Thanks for responding. The O2 sensors showed good when this started - only after about 6 weeks of fooling with this did they come up bad (confirmed by having 3 different shops testing !)
I also tried the turn-on-and-wait trick, but did not seem to make any difference. Will replace the sensors and see if that helps. I am going to leave it with the shop ( with strict instructions NOT to try to start if for 5 days and see what happens. It would be nice if something would just break permanently , so we can fix it.
Thanks again for the suggestions.
eknsar01 is offline   Reply With Quote
Reply

Bookmarks

Tags
1999 yukon, poss fuel prob ?, starting problems


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump



 
Advertisement

Other Sponsors






All times are GMT -4. The time now is 01:22 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
All rights reserved and copyrighted
Fully Driven Auto Network
GM Truck Forum
Ford Raptor Forum
Dodge Ram Forum
Chevy Cobalt Forum
Chevy Camaro Forum
FJ Cruiser Forum
Ford Truck Forum
88-98 GM Truck Forum
73-87 Gm Truck Forum
Ford Expedition Forum
Chevy Equinox Forum
Chevy Cruze Forum
Jeep Liberty Forum
Jeep Forum
Dodge Ram SRT10 Forum
Chrysler 200 Forum
Scion xD Forum
Scion xB Forum
Dodge Challenger Forum
SRT Forum
Nissan Titan Forum
Buick Enclave Forum
Cadillac Forum
Cadillac XTS Forum
TRD Forum
Central US Mopars
Southeast Mopars
Cadillac CTS Forum
Oklahoma Dodge Ram Club
Softball Forum