2000 s-10 random cylinder misfire - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


Chevrolet When starting new posts, please specify YEAR, MAKE, MODEL, ENGINE type, and whatever modifications you have made.

Reply
 
 
 
Thread Tools Search this Thread
Old 01-09-2013, 07:59 AM   #1
Junior Member
Thread Starter
 
Join Date: Nov 2012
Posts: 7
Thanks: 0
Thanked 0 Times in 0 Posts
s10owner is on a distinguished road
Default 2000 *-10 random cylinder misfire

My chevy *-10 4.3L has a random cylinder misfire... A few nights ago my gas was on empty, truck ran fine! I drove about 15 miles then put 20 bucks worth of gas in the truck, still ran fine. I got about a mile down the road and it started to sputter and couldnt accelerate. the next morning I added some dry gas thinking i had gotten water in the fuel tank I even made sure my timing was right. It'* still sputtering and I have a random cylinder misfire. My truck is back fireing and ont get out of its own way. I have replaced spark plugs and wires. I even replaced the crank sensor. I really need to figure this out. I think imight have gotten some bad gas. Any ideas?
s10owner is offline   Reply With Quote
Old 01-09-2013, 08:07 AM   #2
Senior Member
Posts like a Camaro
 
rjblazer's Avatar
 
Join Date: Jan 2010
Location: Elmira, New York
Posts: 853
Thanked 31 Times in 29 Posts
rjblazer has a spectacular aura aboutrjblazer has a spectacular aura about
Default

You might have a bad spider. Then fuel injection assembly under the plastic cover under the throttle body. There are a know cause. They go bad a lot. If it turns out to be that i would get the updated one. The plastic lines harden and crack and leak fuel and cause misfires and also can cause backfires from the fuel sitting in the air intake. Running the gas that low you also could of picked up alot dirt and crap from the bottom of the tank. I would say try replacing the fuel filter. See if it makes any difference. Since that cheap to buy but sometimes a pain to change due to rust.
rjblazer is offline   Reply With Quote
Old 01-09-2013, 08:18 AM   #3
Retired Administrator

True Car Nut
 
GunsOfNavarone's Avatar
 
Join Date: Apr 2009
Location: Williamsport, PA
Posts: 2,856
Thanked 167 Times in 129 Posts
GunsOfNavarone has much to be proud ofGunsOfNavarone has much to be proud ofGunsOfNavarone has much to be proud ofGunsOfNavarone has much to be proud ofGunsOfNavarone has much to be proud ofGunsOfNavarone has much to be proud ofGunsOfNavarone has much to be proud ofGunsOfNavarone has much to be proud ofGunsOfNavarone has much to be proud ofGunsOfNavarone has much to be proud of
Default

Although it doesn't match your exact symptoms (mis-fire/ back-fire), the 4.3L S10 have two major issues that cause them to die while running and/or not start. These should be in the back of your mind while doing the troubleshooting, because if these items have not been replaced yet, you will be in the future.

The fuel pump is a WILL fail item on your S10. When did you replace it? The other item is the ignition switch. Both display the same symptoms when they fail- intermittently won't start, or vehicle dies, or cuts in and out while driving.
GunsOfNavarone is offline   Reply With Quote
Old 01-09-2013, 08:26 AM   #4
Junior Member
Thread Starter
 
Join Date: Nov 2012
Posts: 7
Thanks: 0
Thanked 0 Times in 0 Posts
s10owner is on a distinguished road
Default

Quote:
Originally Posted by GunsOfNavarone View Post
Although it doesn't match your exact symptoms (mis-fire/ back-fire), the 4.3L S10 have two major issues that cause them to die while running and/or not start. These should be in the back of your mind while doing the troubleshooting, because if these items have not been replaced yet, you will be in the future.

The fuel pump is a WILL fail item on your S10. When did you replace it? The other item is the ignition switch. Both display the same symptoms when they fail- intermittently won't start, or vehicle dies, or cuts in and out while driving.
I have replaced the fuel pump recently! My truck was running fine until I got gas. I replaced the pump at 175k, I have 200k on the truck now.
s10owner is offline   Reply With Quote
Old 01-09-2013, 08:41 AM   #5
Senior Administrator








Certified Car Nut
 
Mike's Avatar
 
Join Date: Jul 2003
Location: Horseheads, NY
Posts: 15,649
Thanked 1,001 Times in 777 Posts
Mike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond reputeMike has a reputation beyond repute
Default

25K miles ago? I'm curious, what brand did you replace your pump with? Last pump I swapped out in my 2000 Blazer, failed just after2 years. And that was an Airtex.

Well, lets troubleshoot the easy stuff first.

Do a fuel pressure test.

Disconnect the MAF sensor and see if it runs any better.
Mike is offline   Reply With Quote
Old 01-09-2013, 08:47 AM   #6
Retired Administrator

True Car Nut
 
GunsOfNavarone's Avatar
 
Join Date: Apr 2009
Location: Williamsport, PA
Posts: 2,856
Thanked 167 Times in 129 Posts
GunsOfNavarone has much to be proud ofGunsOfNavarone has much to be proud ofGunsOfNavarone has much to be proud ofGunsOfNavarone has much to be proud ofGunsOfNavarone has much to be proud ofGunsOfNavarone has much to be proud ofGunsOfNavarone has much to be proud ofGunsOfNavarone has much to be proud ofGunsOfNavarone has much to be proud ofGunsOfNavarone has much to be proud of
Default

Quote:
Originally Posted by s10owner View Post
I have replaced the fuel pump recently! My truck was running fine until I got gas. I replaced the pump at 175k, I have 200k on the truck now.
Possible fuel filter issue? Also, on the S10 the fuel pump ground wire often starts to fray, causing intermittent power loss to the fuel pump. The fuel pump ground wire is located at the rear of the drivers side of the bed, it connects to the frame at the same location the rear tail-lights connect.

Might also try a can of STAY-BIL to your fuel. I am assuming the distributor cap and rotor were inspected when the plugs and wires were replaced.
GunsOfNavarone is offline   Reply With Quote
Old 01-09-2013, 09:59 AM   #7
Junior Member
Thread Starter
 
Join Date: Nov 2012
Posts: 7
Thanks: 0
Thanked 0 Times in 0 Posts
s10owner is on a distinguished road
Default

yes, the distributor cap and rotor are new. Mike1995- I disconnected the MAF and it stumbled then went back to running rough. Gunsofnavarone- I will check the fuel pump ground wire to see how it looks.....Thanks guys!
s10owner is offline   Reply With Quote
Old 01-09-2013, 11:14 AM   #8
Senior Member
True Car Nut
 
jwfirebird's Avatar
 
Join Date: Dec 2009
Location: western,ny state
Posts: 9,616
Thanked 563 Times in 481 Posts
jwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond reputejwfirebird has a reputation beyond repute
Default

i will vote for filter. check the pressure and if its low or goes down when you rev or drive the truck its most likely the filter, slight chance of the pump too, neither like being low on fuel
jwfirebird is offline   Reply With Quote
Old 01-11-2013, 08:14 AM   #9
Senior Member
Posts like a 4 Banger
 
Join Date: Aug 2011
Location: muskegon, mi
Posts: 131
Thanks: 0
Thanked 0 Times in 0 Posts
pbrktrt is on a distinguished road
Default

I've seen a number of 4.3'* with bad distributor gears or distributors. The spider is also very common, and pricey.
pbrktrt is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
3.1L P0300 DTC 'Random/Multiple cylinder misfire' Ben Cartwright General GM Chat 2 08-09-2013 10:27 PM
p0300 Random/mult cylinder misfire (fixed) bonnie_99 1992-1999 16 05-08-2011 10:55 PM
Random misfire. Vas62 1992-1999 5 03-15-2007 10:29 AM
Random/multiple misfire, cylinder # 3 zeroburnz 1992-1999 33 04-06-2006 11:57 PM
Random misfire.. what to check besides plugs,wires, coilpack popatim 1992-1999 3 05-11-2005 10:25 AM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 05:45 PM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.