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Old 02-10-2015, 09:38 AM #61
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*** V6 Head Gasket Information Thread ***

I created this thread to keep track of all V6 head gasket failure (and related) discussion threads on this forum (and others) to allow people to draw their own conclusions on the topic.

So here's what I've collected....

General 1GR-FE info

Head gasket failures are reported across multiple forums for the 1GR-FE V6 engine (4Runners, Tacomas and FJ Cruisers all use this engine)
This Forum (several DIY HG replacement threads toward the bottom which are great):
Head Gasket -Survey- Specifically V6
1GRE- FE head gasket was redesigned when?
2004 Limited Edition 4Runner 4X4 - Head Gasket
Preventing Blown Head Gaskets on v6?
New member - need help!!!! - p304 misfire
2004 Limited Edition 4Runner 4X4 - Head Gasket
Head gasket issue for 2004 4runner V6 (a thousand time)?
P0306 Misfire Rough Idle
T120:
Head Gasket Blown - 2004 V6 - Toyota 120 Platforms
Forum

TW:
1GR-FE Head Gasket Failing - Options - Tacoma World Forums
TN:
Head gasket question - Toyota Nation Forum : Toyota Car and Truck Forums
'05 4.0 Liter Head Gasket Issues - Toyota Nation Forum : Toyota Car and Truck Forums
Expedition Portal:
Repair advice? Blown head gasket on 4th Gen 4Runner? - Expedition Portal
Pirate 4x4:
Blew a head gasket on my 4.0 (long rant) - Pirate4x4.Com : 4x4 and Off-Road Forum

Toyota VIN decoding

Total 4Runner Sales Info:
Toyota 4Runner Sales Figures - GOOD CAR BAD CAR
Toyota 4Runner - Wikipedia, the free encyclopedia

Head Gasket production information from this site: 2005 Toyota 4Runner 11-04 Cylinder Head Parts
(It appears the phase in of the new head gaskets for production purposes started in August 2005 and ended in November 2005, anything after November 2005 seems to be assured of having the new head gasket installed at the factory)
V6 exploded View link from same site:
ILLUST NO. 1 OF 2 ----- (0211- )1GRFE

If you've experienced a failed head gasket, please reply with your
Model year
Mileage at failure
Cylinder,
Production Date (on driver door jamb sticker),
11th digit of VIN (This denotes the plant of manufacture from link above) (0=Tahara, 8 or 9 = Hino or K = Japan)
EIN (Engine Identification Number) Is found on rear passenger side stamped into engine (next to VIN plate on engine).

I will update the attached file periodically as members share the above information concerning their head gasket failure. Hopefully, we can then use this information to see if there are any correlations between EIN serial number and/or vehicle production facility with the reported failures.

Also attached is a troubleshooting and diagnosis procedure I found that may be useful for cylinder misfire codes on the 1GR-FE engine.
Attached Images
File Type: pdf 1GR-FE Cylinder Misfire Diagnosis.pdf (222.4 KB, 1009 views)
File Type: pdf HGData.pdf (41.9 KB, 376 views)

Last edited by NuclearN8; 05-04-2015 at 03:56 PM.
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Old 02-10-2015, 11:58 AM #62
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Sounds good, my most up to date tracker is attached.
Attached Images
*** V6 Head Gasket Action Request ***-screenshot_1-png 
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Old 02-11-2015, 05:04 PM #63
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@ecally @Greydog @boostaddict89 @mtn_rooster @PNWSportEd @thebitz1 @Calimander @KMG1981 @ChalkOutline @thefatcat @bobdod04 @lifesaver71 @run4estrunner @bme75 @Mark3850 @BIGA1969 @anthonyhkim @Jerrydog @WillRunner05 @jake87toy @kao @SharonKR @BToyota @VACJ7 @nysimonsez @Jeff S. @Cornelius @vinnie febs @thatguy1988 @thewizard @nossliw @Wishbone @TracyScram @smcdowell @cah283 @i65south @savants @scottb @BenSD

If you still own the 4Runner and you're willing to share, please reply with the missing data about your head gasket failure

Model year
Mileage at failure
Cylinder,
Production Date (on driver door jamb sticker),
11th digit of VIN (This denotes the plant of manufacture from link above) (0=Tahara, 8 or 9 = Hino)
EIN (Engine Identification Number) Is found on rear passenger side stamped into engine (next to VIN plate on engine).
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Old 02-13-2015, 05:15 PM #64
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What is the end game here? And are you requesting replies by PM or so the general public can see it all. Just was wondering.
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Old 02-13-2015, 09:20 PM #65
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My end game is to collect the data, enough at least to analyze it in an objective manner and present it here in a consolidated manner. (since no such thread exists yet that I have found on any forum)

A simple reply in the thread works for me... the data will be in the attached pdf file in the first post anyway... but if you feel more comfortable with a PM, works too.

From the data I've collected to date, I'm not convinced there is an issue at all.... I mean if 03-05 are allegedly the trouble years for the 1GR-FE in 4Runners,how come no 2003's have been reported as failed? It seems awfully weird, right?... The HG changes doesn't mean anything in my eyes... logistic supply chains and suppliers change all the time, it's just part of doing business in large scale and quantities.

I believe the 1GR-FE is a very reliable engine based on the numbers... I'm not sure how to draw any other conclusion based on the total sales numbers and number of failures reported... I mean .. in 2004, conservatively assuming 1/2 the 4runners sold were V6's this means with the failures reported on this site that's less than .01%, all of which were out of warranty at the time of failure. Even if there are 10 times more that have failed that aren't reported... that's still not .1% of total sales (assuming 50% of sales were V6's, probably more like 60-70%).

My end goal is the follow the numbers, numbers don't lie.

Last edited by NuclearN8; 02-13-2015 at 09:22 PM.
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Old 02-16-2015, 05:03 PM #66
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Combined tracker in alphabetical order update.
Attached Images
*** V6 Head Gasket Action Request ***-screenshot_3-png 
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2004 V6 2wd Sport - BFG Mud T/A KM 255/75/17, Bilstein 5100ís: front FJ coils, 4" lift spindles set @ .85, rear Metal Tech LT MD coils, SS brake lines, Uniball UCAs, Spidertrax; K&N air filter w/ HCF delete, WeatherTech Liners, dual batteries w/ isolator, inverter w/ 110v outlets, on-board air, satellite radio, custom grill emblem and roof rack; Mods: auto headlights, aux remote reverse LED pods and GY6.35 50w reverse bulbs, rear camera, interior LEDs, VSC, 12v w/ added outlets and windows always on, DRL on/off w/ always on mode, fog/map light, key reminder, TPMS bypass, front wheel liner relocate; de-badged, mud flaps, running boards, resonator, Xreas, front/rear sway bar removed
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Old 02-16-2015, 05:06 PM #67
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Wow. That list is scary long. I priced a head gasket job on mine today because I have a 2004 and I'm not lucky enough to dodge that bullet for very long. I wanted to plan ahead. I found a trusted independent job to do it for $2300.

I had no idea the list was that long.
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Old 02-18-2015, 03:47 PM #68
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Add this info

Production date 10/04
Cylinder 6
0-Tahara

Also notice the abundance of 4 and 6 as the problem. Photos posted of others gasket failure and my gasket failure are virtually identical. The gasket fails in the area between the 4 and 6 cylinder.
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Last edited by lifesaver71; 02-18-2015 at 03:50 PM. Reason: new info
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Old 02-18-2015, 04:35 PM #69
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@lifesaver71 you are on the list, is the information I am adding for "0-Tahara"? If so, do you have a current mileage and 2 or 4wd? Thanks.
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2004 V6 2wd Sport - BFG Mud T/A KM 255/75/17, Bilstein 5100ís: front FJ coils, 4" lift spindles set @ .85, rear Metal Tech LT MD coils, SS brake lines, Uniball UCAs, Spidertrax; K&N air filter w/ HCF delete, WeatherTech Liners, dual batteries w/ isolator, inverter w/ 110v outlets, on-board air, satellite radio, custom grill emblem and roof rack; Mods: auto headlights, aux remote reverse LED pods and GY6.35 50w reverse bulbs, rear camera, interior LEDs, VSC, 12v w/ added outlets and windows always on, DRL on/off w/ always on mode, fog/map light, key reminder, TPMS bypass, front wheel liner relocate; de-badged, mud flaps, running boards, resonator, Xreas, front/rear sway bar removed
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Old 02-18-2015, 05:48 PM #70
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Quote:
Originally Posted by morphious View Post
@lifesaver71 you are on the list, is the information I am adding for "0-Tahara"? If so, do you have a current mileage and 2 or 4wd? Thanks.
he was just supplying the additional information for his failure I requested... the 0-Tahara was the production plant for his vehicle....
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Old 02-20-2015, 10:08 AM #71
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MY GARAGE
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head gasket

2006 Sport 4Runner was a 4WD. Sold
Unsure which cylinder was affected, but both head gaskets were replaced under warranty.
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Old 02-20-2015, 10:59 AM #72
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210,000 mi
Cylinder 6
04/2003
Tahara
Don't know EIN
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Old 02-20-2015, 11:45 AM #73
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thanks guys. updated the HGData pdf file in the first post with the info you supplied
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Old 02-20-2015, 01:18 PM #74
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Update.
Attached Images
*** V6 Head Gasket Action Request ***-screenshot_1-png 
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2004 V6 2wd Sport - BFG Mud T/A KM 255/75/17, Bilstein 5100ís: front FJ coils, 4" lift spindles set @ .85, rear Metal Tech LT MD coils, SS brake lines, Uniball UCAs, Spidertrax; K&N air filter w/ HCF delete, WeatherTech Liners, dual batteries w/ isolator, inverter w/ 110v outlets, on-board air, satellite radio, custom grill emblem and roof rack; Mods: auto headlights, aux remote reverse LED pods and GY6.35 50w reverse bulbs, rear camera, interior LEDs, VSC, 12v w/ added outlets and windows always on, DRL on/off w/ always on mode, fog/map light, key reminder, TPMS bypass, front wheel liner relocate; de-badged, mud flaps, running boards, resonator, Xreas, front/rear sway bar removed
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Old 02-22-2015, 12:59 PM #75
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Tagging for future reference. Thanks
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