12-06-2019, 09:10 PM
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#31
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Join Date: Mar 2018
Location: Moorpark CA
Age: 42
Posts: 477
Real Name: Elliott
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Member
Join Date: Mar 2018
Location: Moorpark CA
Age: 42
Posts: 477
Real Name: Elliott
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I went with NGK. Work flawlessly
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2007 SR5 V6 4WD 205k, Titanium Metallic. 5100s, OME 885/895, extended rear links, ST Maxx 255/75 R17 on 17x8s, mud flap delete,TB spacer, Spectre CAI, DRL delete, HCF delete, DAC delete, K&N cabin filter, TPMS bypass, Fog light mod, USB galore, dash cam, LED lights all over, rear bumper lights, cbi ditch light brackets w/lights, atrac off, OBA w/2 gallon tank/hidden hook up, Trailgear welded sliders, Rocksteady skids, custom swing-out, 3⁰, SE hood w/working vent, Sprint booster, JET MAF, Kenwood TM-V71a w/motorized antenna, custom dual battery, custom roof rack/lights, custom TRED mount, external 12v, rear diff breather, pck, Freedom UCAs, custom stereo, Aluminum rad, trans cooler, 240A alternator...for now...
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12-10-2019, 02:33 PM
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#33
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Member
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Join Date: Oct 2009
Location: Seattle, WA
Posts: 55
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Member
Join Date: Oct 2009
Location: Seattle, WA
Posts: 55
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Replacing both the downstream sensors today. After replacing them, do I need to pull the battery cables off and let it sit for a bit? Or am I good to start driving once they're replaced.
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12-11-2019, 12:42 AM
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#34
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Member
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Join Date: Mar 2018
Location: Moorpark CA
Age: 42
Posts: 477
Real Name: Elliott
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Member
Join Date: Mar 2018
Location: Moorpark CA
Age: 42
Posts: 477
Real Name: Elliott
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Quote:
Originally Posted by blindloser1080
Replacing both the downstream sensors today. After replacing them, do I need to pull the battery cables off and let it sit for a bit? Or am I good to start driving once they're replaced.
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Not a bad practice. With modern vehicles, the computer stores and remembers everything. Blanking it out will make it relearn so if there is another problem it will be obvious. Don't be alarmed, engine will start and die the first time. That's normal, start it again and it should be fine
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2007 SR5 V6 4WD 205k, Titanium Metallic. 5100s, OME 885/895, extended rear links, ST Maxx 255/75 R17 on 17x8s, mud flap delete,TB spacer, Spectre CAI, DRL delete, HCF delete, DAC delete, K&N cabin filter, TPMS bypass, Fog light mod, USB galore, dash cam, LED lights all over, rear bumper lights, cbi ditch light brackets w/lights, atrac off, OBA w/2 gallon tank/hidden hook up, Trailgear welded sliders, Rocksteady skids, custom swing-out, 3⁰, SE hood w/working vent, Sprint booster, JET MAF, Kenwood TM-V71a w/motorized antenna, custom dual battery, custom roof rack/lights, custom TRED mount, external 12v, rear diff breather, pck, Freedom UCAs, custom stereo, Aluminum rad, trans cooler, 240A alternator...for now...
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12-11-2019, 01:09 AM
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#35
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Join Date: Oct 2009
Location: Seattle, WA
Posts: 55
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Join Date: Oct 2009
Location: Seattle, WA
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Quote:
Originally Posted by 81runner
Not a bad practice. With modern vehicles, the computer stores and remembers everything. Blanking it out will make it relearn so if there is another problem it will be obvious. Don't be alarmed, engine will start and die the first time. That's normal, start it again and it should be fine
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Thanks, will most definitely do. Just got both the sensors installed. It definitely didn't misfire nearly as much as it was before with the old sensors. Maybe 6 times total? And that was at the very beginning of my drive. On the way back, nothing that I noticed.
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12-11-2019, 12:50 PM
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#36
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Member
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Join Date: Mar 2018
Location: Moorpark CA
Age: 42
Posts: 477
Real Name: Elliott
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Member
Join Date: Mar 2018
Location: Moorpark CA
Age: 42
Posts: 477
Real Name: Elliott
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Quote:
Originally Posted by blindloser1080
Thanks, will most definitely do. Just got both the sensors installed. It definitely didn't misfire nearly as much as it was before with the old sensors. Maybe 6 times total? And that was at the very beginning of my drive. On the way back, nothing that I noticed.
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Right on. Sounds promising
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2007 SR5 V6 4WD 205k, Titanium Metallic. 5100s, OME 885/895, extended rear links, ST Maxx 255/75 R17 on 17x8s, mud flap delete,TB spacer, Spectre CAI, DRL delete, HCF delete, DAC delete, K&N cabin filter, TPMS bypass, Fog light mod, USB galore, dash cam, LED lights all over, rear bumper lights, cbi ditch light brackets w/lights, atrac off, OBA w/2 gallon tank/hidden hook up, Trailgear welded sliders, Rocksteady skids, custom swing-out, 3⁰, SE hood w/working vent, Sprint booster, JET MAF, Kenwood TM-V71a w/motorized antenna, custom dual battery, custom roof rack/lights, custom TRED mount, external 12v, rear diff breather, pck, Freedom UCAs, custom stereo, Aluminum rad, trans cooler, 240A alternator...for now...
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12-11-2019, 05:12 PM
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#37
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Join Date: Oct 2009
Location: Seattle, WA
Posts: 55
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Member
Join Date: Oct 2009
Location: Seattle, WA
Posts: 55
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Unplugged the battery for a good 20 minutes. Drove around town, around the freeway 55-60mph no problems for about 30 minutes. Stopped at the store, decided to take it on the freeway... it starts happening again. Same misfires at 55-60 and sometimes at low like 25 whenever I'm at the 1800 rpm mark.
Any other thoughts?
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12-11-2019, 06:52 PM
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#38
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Member
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Join Date: Dec 2017
Location: Washington
Posts: 264
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Member
Join Date: Dec 2017
Location: Washington
Posts: 264
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Quote:
Originally Posted by blindloser1080
Unplugged the battery for a good 20 minutes. Drove around town, around the freeway 55-60mph no problems for about 30 minutes. Stopped at the store, decided to take it on the freeway... it starts happening again. Same misfires at 55-60 and sometimes at low like 25 whenever I'm at the 1800 rpm mark.
Any other thoughts?
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Check your fuel trims and O2 sensor voltages again and see if anything changed after putting in the new sensors.
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12-11-2019, 07:14 PM
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#39
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Join Date: Oct 2009
Location: Seattle, WA
Posts: 55
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Member
Join Date: Oct 2009
Location: Seattle, WA
Posts: 55
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So I decided screw it. Called the Toyota specialist here avx they ran a diagnostics on it. My 3rrd coil is bad. They hooked it up to a computer and found the misfire. Moved the 3rd coil to #5 and the misfire moved with it. So off to buy a new coil!
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12-13-2019, 07:43 PM
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#40
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Join Date: Dec 2017
Location: Washington
Posts: 264
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Member
Join Date: Dec 2017
Location: Washington
Posts: 264
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Quote:
Originally Posted by blindloser1080
So I decided screw it. Called the Toyota specialist here avx they ran a diagnostics on it. My 3rrd coil is bad. They hooked it up to a computer and found the misfire. Moved the 3rd coil to #5 and the misfire moved with it. So off to buy a new coil!
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Any idea how they test for that?
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12-21-2019, 02:23 AM
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#41
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Join Date: Oct 2009
Location: Seattle, WA
Posts: 55
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Location: Seattle, WA
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Quote:
Originally Posted by djpope09
Any idea how they test for that?
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They basically put it on a 'scope'. Hooked up a computer to it and found the misfire on the coil. Moved the coil from #3 to #5 and the misfire followed. I have since replaced the coil and no problems at all!
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12-21-2019, 04:01 PM
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#42
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Senior Member
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Join Date: Oct 2013
Location: illinois
Posts: 1,613
Real Name: Ron
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Senior Member
Join Date: Oct 2013
Location: illinois
Posts: 1,613
Real Name: Ron
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This was an interesting situation ( from my perspective). Glad you got it sorted out. With coil-on-plug arrangement it seems they would act as one (almost) and that a scope would be able to sort it out, as you discovered.
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