User Tag List

Reply
 
Thread Tools Rate Thread Display Modes
Old 03-15-2020, 01:39 PM #1
noxor noxor is offline
Member
 
Join Date: Nov 2016
Location: vegas baby
Posts: 58
noxor is on a distinguished road
noxor noxor is offline
Member
 
Join Date: Nov 2016
Location: vegas baby
Posts: 58
noxor is on a distinguished road
Changed spark plugs, now misfiring when warmed up

99 3.4L 4x4 automatic here. 145k miles.

I changed my spark plugs from the single ground to the double ground NGKs.

Next day I drove an hour and it was fine. I started it up to go home and it was idling rough. When I got back home I had error codes for cylinders 3 and 6.

I have replaced the spark plug wiring harness and that seemed to work until I was an hour down the highway and it came back (it was bad enough to cause check engine light to flash and I have AAA so i got towed home).

What should be my next steps?
noxor is offline   Reply With QuoteReply With Quote
Old 03-15-2020, 02:00 PM #2
heat's Avatar
heat heat is offline
Member
 
Join Date: Jun 2013
Location: Virginia
Posts: 229
heat is on a distinguished road
heat heat is offline
Member
heat's Avatar
 
Join Date: Jun 2013
Location: Virginia
Posts: 229
heat is on a distinguished road
Coils and wires
__________________
'02 Limited 4x4 AT - Stock ~181k miles
Thundercloud aka metallic dirt
heat is offline   Reply With QuoteReply With Quote
Old 03-15-2020, 02:31 PM #3
rkntoy's Avatar
rkntoy rkntoy is offline
Senior Member
 
Join Date: Jan 2016
Location: Bend
Posts: 1,006
rkntoy will become famous soon enough
rkntoy rkntoy is offline
Senior Member
rkntoy's Avatar
 
Join Date: Jan 2016
Location: Bend
Posts: 1,006
rkntoy will become famous soon enough
Since it was running OK for an hour I would double check and make sure something didn't shake loose starting with cylinders 3 and 6.
__________________
1999 Base model 4x4 3RZ 5 speed - added e-locker, front Aussie, dual cases with 4.7 front, manual hubs, Tundra/OME 861 springs, Shaved firewall (thanks Tyler James Inc), AssBurns rear links (run as 3 link),Limited interior w/ Mazda3 Grand Touring seats, Savage front and rear bumpers w/ winch, sliders, Thorley header w/ Magnaflow exhaust, SPC UCAs, 37s with 5.29 gears, roof rack and storage box, sport hood, BL and more. Linky
rkntoy is offline   Reply With QuoteReply With Quote
Old 03-15-2020, 02:38 PM #4
brillo_76's Avatar
brillo_76 brillo_76 is offline
Senior Member
 
Join Date: May 2017
Location: Western PA
Posts: 1,905
Real Name: Jon
brillo_76 is a glorious beacon of light brillo_76 is a glorious beacon of light brillo_76 is a glorious beacon of light brillo_76 is a glorious beacon of light brillo_76 is a glorious beacon of light brillo_76 is a glorious beacon of light
brillo_76 brillo_76 is offline
Senior Member
brillo_76's Avatar
 
Join Date: May 2017
Location: Western PA
Posts: 1,905
Real Name: Jon
brillo_76 is a glorious beacon of light brillo_76 is a glorious beacon of light brillo_76 is a glorious beacon of light brillo_76 is a glorious beacon of light brillo_76 is a glorious beacon of light brillo_76 is a glorious beacon of light
Spark Plugs Wires and Coil Information for the 5VZ-FE
__________________
1997 4X4 V6 5 Speed Sr5 4 Runner (97 5 speed )
1997 4X4 V6 Red limited 4 Runner (97 Limited)
1998 4X4 V6 Sr5 Red 4 Runner (98 Tetanus1 )
1998 4X4 V6 Sr5 Silver 4 Runner (98 Tetanus2)
2001 4X4 V6 Sport Green 4 Runner (01 Green Sport)
brillo_76 is offline   Reply With QuoteReply With Quote
Old 03-15-2020, 03:06 PM #5
Tucson Mike Tucson Mike is offline
Junior Member
 
Join Date: Mar 2012
Location: Tucson
Posts: 22
Tucson Mike is on a distinguished road
Tucson Mike Tucson Mike is offline
Junior Member
 
Join Date: Mar 2012
Location: Tucson
Posts: 22
Tucson Mike is on a distinguished road
Did you buy the plugs from a reputable seller? I recently ran into a similar issue where I bought plugs (denso) off ebay for my sequoia and they were counterfeit. Immediately #8 started misfiring and I replaced just that plug. All was well for about 15k until I got multiple misfire code and did more researching and discovered mine were counterfeit. If your vehicle was running fine before you put the new plugs in and the wiring is routed correctly, I would look at the plugs being defective. Good luck Mike M
Tucson Mike is offline   Reply With QuoteReply With Quote
Old 03-15-2020, 04:15 PM #6
4restGump 4restGump is offline
Member
 
Join Date: Aug 2018
Location: 614
Posts: 55
4restGump is on a distinguished road
4restGump 4restGump is offline
Member
 
Join Date: Aug 2018
Location: 614
Posts: 55
4restGump is on a distinguished road
Quote:
Originally Posted by Tucson Mike View Post
Did you buy the plugs from a reputable seller? I recently ran into a similar issue where I bought plugs (denso) off ebay for my sequoia and they were counterfeit. Immediately #8 started misfiring and I replaced just that plug. All was well for about 15k until I got multiple misfire code and did more researching and discovered mine were counterfeit. If your vehicle was running fine before you put the new plugs in and the wiring is routed correctly, I would look at the plugs being defective. Good luck Mike M
Yep, my money is on the counterfeit plugs. Take a picture of them for some lol
4restGump is offline   Reply With QuoteReply With Quote
Old 03-15-2020, 05:53 PM #7
19963.4lsr5 19963.4lsr5 is offline
Senior Member
 
Join Date: Aug 2013
Location: Stouchsburg PA
Posts: 3,445
19963.4lsr5 has a spectacular aura about 19963.4lsr5 has a spectacular aura about 19963.4lsr5 has a spectacular aura about
19963.4lsr5 19963.4lsr5 is offline
Senior Member
 
Join Date: Aug 2013
Location: Stouchsburg PA
Posts: 3,445
19963.4lsr5 has a spectacular aura about 19963.4lsr5 has a spectacular aura about 19963.4lsr5 has a spectacular aura about
Quote:
Originally Posted by 4restGump View Post
Yep, my money is on the counterfeit plugs. Take a picture of them for some lol

I guess the real question is where did he buy them from.


Sent from my iPhone using Tapatalk
19963.4lsr5 is offline   Reply With QuoteReply With Quote
Old 03-15-2020, 06:39 PM #8
TheDurk's Avatar
TheDurk TheDurk is offline
Elite Member
 
Join Date: Nov 2006
Location: New Jersey
Posts: 7,310
TheDurk is a jewel in the rough TheDurk is a jewel in the rough TheDurk is a jewel in the rough TheDurk is a jewel in the rough
TheDurk TheDurk is offline
Elite Member
TheDurk's Avatar
 
Join Date: Nov 2006
Location: New Jersey
Posts: 7,310
TheDurk is a jewel in the rough TheDurk is a jewel in the rough TheDurk is a jewel in the rough TheDurk is a jewel in the rough
I would put two old plugs into Ctls 3 and 6. Note those two are on the same coil, so one bum plug can cause both to misfire.
__________________
'99 4Runner SR5 5spd 3.4L V6 4WD(U.S), original '99 Talls in front, OME 906s in back, Hella fogs, Trekmaster shocks in front, Billy in back, no running boards, FIAMM horns, Alpine sound, Michelin LTX M/S2's, owned since new.
'97 HiLux SW4 5spd 4WD(Japan model bought in Brazil assembled in Argentina, very close to a 3.0 4Runner/Surf)
'71 FordWillys Jeep CJ5 (with straight six Ford Maverick 3.0 liter engine--lives in the mountains north of Sao Paulo Brazil)
My Backyard Frame Swap
TheDurk is offline   Reply With QuoteReply With Quote
Old 03-15-2020, 08:28 PM #9
brillo_76's Avatar
brillo_76 brillo_76 is offline
Senior Member
 
Join Date: May 2017
Location: Western PA
Posts: 1,905
Real Name: Jon
brillo_76 is a glorious beacon of light brillo_76 is a glorious beacon of light brillo_76 is a glorious beacon of light brillo_76 is a glorious beacon of light brillo_76 is a glorious beacon of light brillo_76 is a glorious beacon of light
brillo_76 brillo_76 is offline
Senior Member
brillo_76's Avatar
 
Join Date: May 2017
Location: Western PA
Posts: 1,905
Real Name: Jon
brillo_76 is a glorious beacon of light brillo_76 is a glorious beacon of light brillo_76 is a glorious beacon of light brillo_76 is a glorious beacon of light brillo_76 is a glorious beacon of light brillo_76 is a glorious beacon of light
Quote:
Originally Posted by 19963.4lsr5 View Post
I guess the real question is where did he buy them from.


Sent from my iPhone using Tapatalk
Yes. I am suspecting bad parts as well. I added a youtube video on NGK plugs. Everyone should watch it as the counterfeit plugs are extremely close to the real plugs.

They were even bought on Amazon so not from a clean source. Its amazing to the extent china goes to. No reason for counterfeit parts.

Sent from my SM-J337V using Tapatalk
__________________
1997 4X4 V6 5 Speed Sr5 4 Runner (97 5 speed )
1997 4X4 V6 Red limited 4 Runner (97 Limited)
1998 4X4 V6 Sr5 Red 4 Runner (98 Tetanus1 )
1998 4X4 V6 Sr5 Silver 4 Runner (98 Tetanus2)
2001 4X4 V6 Sport Green 4 Runner (01 Green Sport)
brillo_76 is offline   Reply With QuoteReply With Quote
Old 03-16-2020, 02:21 AM #10
noxor noxor is offline
Member
 
Join Date: Nov 2016
Location: vegas baby
Posts: 58
noxor is on a distinguished road
noxor noxor is offline
Member
 
Join Date: Nov 2016
Location: vegas baby
Posts: 58
noxor is on a distinguished road
Quote:
Originally Posted by Tucson Mike View Post
Did you buy the plugs from a reputable seller? I recently ran into a similar issue where I bought plugs (denso) off ebay for my sequoia and they were counterfeit. Immediately #8 started misfiring and I replaced just that plug. All was well for about 15k until I got multiple misfire code and did more researching and discovered mine were counterfeit. If your vehicle was running fine before you put the new plugs in and the wiring is routed correctly, I would look at the plugs being defective. Good luck Mike M

Thanks Mike and everyone else! I bought the plugs from rock auto and they match the pics online (made in japan etc).

I pulled them all, gapped them to .044 (they were .040), and installed to 13 ft/lb per spec. I had originally hand tightened them and then added some with a wrench before but after using a torque wrench I definitely didnt apply as much pressure earlier. I am thinking it was simply loose plugs.

I ran it for a while tonight, and will take it to work this week, but so far so good now!
noxor is offline   Reply With QuoteReply With Quote
Old 03-16-2020, 02:22 AM #11
noxor noxor is offline
Member
 
Join Date: Nov 2016
Location: vegas baby
Posts: 58
noxor is on a distinguished road
noxor noxor is offline
Member
 
Join Date: Nov 2016
Location: vegas baby
Posts: 58
noxor is on a distinguished road
Quote:
Originally Posted by rkntoy View Post
Since it was running OK for an hour I would double check and make sure something didn't shake loose starting with cylinders 3 and 6.
Yep I think this was it. I dont think I had torqued them enough!
noxor is offline   Reply With QuoteReply With Quote
Old 03-23-2020, 09:48 PM #12
noxor noxor is offline
Member
 
Join Date: Nov 2016
Location: vegas baby
Posts: 58
noxor is on a distinguished road
noxor noxor is offline
Member
 
Join Date: Nov 2016
Location: vegas baby
Posts: 58
noxor is on a distinguished road
Well I spoke too soon. An hour into a drive the problem came back.

Put in new spark plugs I got from autozone and the problem persists.

Am checking coil packs out and then will move onto distributors etc.
noxor is offline   Reply With QuoteReply With Quote
Old 03-23-2020, 10:26 PM #13
shadow247 shadow247 is offline
Senior Member
 
Join Date: Feb 2012
Location: DFW, TX
Posts: 1,429
shadow247 will become famous soon enough
shadow247 shadow247 is offline
Senior Member
 
Join Date: Feb 2012
Location: DFW, TX
Posts: 1,429
shadow247 will become famous soon enough
Sounds like a bad coil to me. I would swap the coil pack from one cylinder to another and see if the misfire moves around. Pretty quick swap. If it's stays on the same 2 cylinders, then you may have an issue with the wire to the coil pack.

FYI - there is no Distributor on these engines.
__________________

99 SR5 Sport - 350k and rolling! Front - Toytec 3/4 Spacer/Tundra Shocks. Rear - Daystar 1.5" Spacer/LC Shocks
Government can neither guarantee nor grant safety. Only a fool would believe otherwise.
I prefer dangerous freedom over peaceful slavery!
A gun in the hand is better than a cop on the phone! www.opencarry.org www.vcdl.org <--- Learn your rights
shadow247 is offline   Reply With QuoteReply With Quote
Old 03-23-2020, 11:43 PM #14
Joe-Runner's Avatar
Joe-Runner Joe-Runner is offline
Member
 
Join Date: Aug 2017
Location: Vegas
Posts: 250
Real Name: Joe-Runner
Joe-Runner has a spectacular aura about Joe-Runner has a spectacular aura about
Joe-Runner Joe-Runner is offline
Member
Joe-Runner's Avatar
 
Join Date: Aug 2017
Location: Vegas
Posts: 250
Real Name: Joe-Runner
Joe-Runner has a spectacular aura about Joe-Runner has a spectacular aura about
Once upon a time I changed the spark plugs in my 1999 Mercury Cougar. Ran pretty all right except it would hesitate under significant acceleration. Finally, after a buttload of troubleshooting, I traced it down to a cracked spark plug...... could be your issue...
__________________
2013 Trail; 3" Toytec lift w/Bilstein 5100s, KDSS, vinyl wrap, FX FN Pros w/ 265/70/R17 Nitro Ridge Grapplers, K&N Filters, Xenon Depot Xtreme LED headlights, and the back window rolls down 😁

http://badges.fuelly.com/images/sig-us/992611.png
Joe-Runner is offline   Reply With QuoteReply With Quote
Old 03-24-2020, 09:45 AM #15
brillo_76's Avatar
brillo_76 brillo_76 is offline
Senior Member
 
Join Date: May 2017
Location: Western PA
Posts: 1,905
Real Name: Jon
brillo_76 is a glorious beacon of light brillo_76 is a glorious beacon of light brillo_76 is a glorious beacon of light brillo_76 is a glorious beacon of light brillo_76 is a glorious beacon of light brillo_76 is a glorious beacon of light
brillo_76 brillo_76 is offline
Senior Member
brillo_76's Avatar
 
Join Date: May 2017
Location: Western PA
Posts: 1,905
Real Name: Jon
brillo_76 is a glorious beacon of light brillo_76 is a glorious beacon of light brillo_76 is a glorious beacon of light brillo_76 is a glorious beacon of light brillo_76 is a glorious beacon of light brillo_76 is a glorious beacon of light
Do you have the ability to test the plug wires and coils with a meter as I commented earlier on this thread? That may help in narrowing the issues down quickly. :-)
__________________
1997 4X4 V6 5 Speed Sr5 4 Runner (97 5 speed )
1997 4X4 V6 Red limited 4 Runner (97 Limited)
1998 4X4 V6 Sr5 Red 4 Runner (98 Tetanus1 )
1998 4X4 V6 Sr5 Silver 4 Runner (98 Tetanus2)
2001 4X4 V6 Sport Green 4 Runner (01 Green Sport)
brillo_76 is offline   Reply With QuoteReply With Quote
Reply

Tags
back , ground , home , hour , spark

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

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 On

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
changed spark plugs today caper 5th gen T4Rs 10 01-06-2020 05:55 PM
Changed spark plugs on 4Runner (4.7-V8); progress4m 4th Gen T4Rs 2 12-12-2014 02:30 PM
Changed my spark plugs and found this. JB_Runner 3rd gen T4Rs 10 11-25-2013 01:31 PM
Changed spark plugs... One was covered in wet oil... 1clean4runner 4th Gen T4Rs 53 01-22-2013 02:08 AM
Changed spark plugs and found oil on some of them? T4R2003 4th Gen T4Rs 2 10-23-2009 01:12 AM

Powered by vBadvanced CMPS v3.2.2

All times are GMT -4. The time now is 03:10 AM.

Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2020, vBulletin Solutions Inc.
Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2020 DragonByte Technologies Ltd.
Feedback Buttons provided by Advanced Post Thanks / Like (Lite) - vBulletin Mods & Addons Copyright © 2020 DragonByte Technologies Ltd.
User Alert System provided by Advanced User Tagging (Lite) - vBulletin Mods & Addons Copyright © 2020 DragonByte Technologies Ltd.
***This site is an unofficial Toyota site, and is not officially endorsed, supported, authorized by or affiliated with Toyota. All company, product, or service names references in this web site are used for identification purposes only and may be trademarks of their respective owners. The Toyota name, marks, designs and logos, as well as Toyota model names, are registered trademarks of Toyota Motor Corporation***Ad Management plugin by RedTyger
 
Copyright © 2020