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Old 09-16-2019, 07:09 PM #931
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I would return before the 30 days is up. The dealer might be trying to stall to get past the 30 days so you are stuck with it.

Return it and find one with a V8 or a later model year 06-09.

Good luck!
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Old 09-16-2019, 07:20 PM #932
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I would return it and look for another, if you find one that has a V6 be sure to look at the build date, it's needs to be 12/05 or later to insure it has the updated head gaskets, or if you find an earlier build that has had the head gasket replaced, the new gaskets would be of the new design, or if you luck up and find a V8 even better.

The only other option is keep it until it starts running badly and be prepared to replace the head gaskets.

The proper test is to test the coolant for combustion gases, if they find combustion gases in the coolant the head gasket/s are bad and will at some point get worst, many have driven for a year or more after a test showing the head gasket/s are bad.
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Old 09-24-2019, 09:32 AM #933
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Quote:
Originally Posted by jazisded View Post
Hi Everyone,

First post here. Wish it was in another thread.

I just purchased an 05 SR5 with 164k miles on it. The Truck is in fantastic shape in every way. Before purchase i had it inspected at a local Toyota dealer who gave it a clean bill of health which i soon figured out wasn't worth much. A couple of days after taking delivery of the truck, i popped the radiator cap and saw green coolant in the radiator and Pink in the overflow. No good. I also notice the waterfall sound coming from under the dash on cold startup.

Ruh roh.

Take it back to the Toyota dealer, get my inspection funds applied to a cooling system flush and fill and ask them to insure there isn't a head gasket issue. They say there's no head gasket issue and that the issue with the waterfall sound is fixed. Next morning, waterfall sound again so i take it back to the dealer. They tell me they'll use vacuum to get the coolant to pull through the heater core and get the bubble out. Next morning, waterfall sound.

Now i find out about the head gasket issues.....i have 30 days to return this truck which i absolutely love. No rough start issues, no overheating issues. I have a scangauge and i've been monitoring coolant temps and they are between 185 and 191 while driving around.

I have a bunch of service records on the car but nothing regarding coolant changes, though i know someone did put green in it at some point.

So....might I ask the collective wisdom of this fine forum for some advice? Would you continue performing tests or just return the truck and walk away? It was built in June of 05....
Return the truck. Maybe they'll fix the HG
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Old 10-01-2019, 02:15 PM #934
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Build date or VIN when V6 HG fix effective?

'06 4R V6 169K miles
My question: Does anyone know the build date or VIN when the 4R V6 HG fix at the factory is effective?
Been having engine symptoms which sound like blown HG [rough at startup, CEL on, P0304 scan code [misfire #4 cyl]. Mechanic replaced plugs and coils, and cleaned injectors. He says it's not the HG, just dirty injectors. Cylinder test shows too much ethanol so going to run 89 octane instead of 87 for a while. Hoping I'm not in for an expensive HG job!!! TIA!
Have asked in the 4th Gen FB group, but wanted to ask this group too.
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Old 10-01-2019, 02:18 PM #935
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Quote:
Originally Posted by rwloos45 View Post
'06 4R V6 169K miles
My question: Does anyone know the build date or VIN when the 4R V6 HG fix at the factory is effective?
Been having engine symptoms which sound like blown HG [rough at startup, CEL on, P0304 scan code [misfire #4 cyl]. Mechanic replaced plugs and coils, and cleaned injectors. He says it's not the HG, just dirty injectors. Cylinder test shows too much ethanol so going to run 89 octane instead of 87 for a while. Hoping I'm not in for an expensive HG job!!! TIA!
Have asked in the 4th Gen FB group, but wanted to ask this group too.
Replace the injector in the cylinder that's having the misfires. Myself and others have had issues (especially after the engine gets too hot once or twice, but not hot enough to blow the HG) where the #4 or #6 injector will stick open and leak gas into the cylinder after the vehicle is turned off. That, in turn, leads to bad misfires on startup. Replacing my #4 injector fixed it for me 100%. Be careful though, as there are some crappy remans out there.

Cleaning the injectors doesn't help, as it does nothing to solve the injector's actual issue of sticking open.
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Old 10-01-2019, 02:26 PM #936
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Many thanks Kevin. I'll pass that along to my mechanic.
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Old 10-01-2019, 05:02 PM #937
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Quote:
Originally Posted by rwloos45 View Post
'06 4R V6 169K miles
My question: Does anyone know the build date or VIN when the 4R V6 HG fix at the factory is effective?
Been having engine symptoms which sound like blown HG [rough at startup, CEL on, P0304 scan code [misfire #4 cyl]. Mechanic replaced plugs and coils, and cleaned injectors. He says it's not the HG, just dirty injectors. Cylinder test shows too much ethanol so going to run 89 octane instead of 87 for a while. Hoping I'm not in for an expensive HG job!!! TIA!
Have asked in the 4th Gen FB group, but wanted to ask this group too.
Your build date is written in the door jam, drivers side. I also have a 2006, unfortunately it was built in 11/05. I had all the symptoms in this thread and finally had it fixed. All good now at close to 190K.

As far as I can tell Toyota started using the "other" HGs around 12/05.
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Old 10-01-2019, 05:43 PM #938
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Year: 2005
Production Date: January
4x4 Sport
Mileage: 153k, owned since 140k with symptoms

Had water sound behind dash after purchase, coolant reservoir was low.
Filled up the radiator and overflow, slowly draining since. Possible unrelated radiator leak but very inconsistent.
Sweet exhaust smell on startup for 30 seconds.
Did block test that passed.
No misfire, no rough start or decrease power.
Oil looks good. Have done two oil changes since.

Next step will be compression test.
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Old 10-01-2019, 09:32 PM #939
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What's a good reman injector brand?

Quote:
Originally Posted by kcdehart View Post
Replace the injector in the cylinder that's having the misfires. Myself and others have had issues (especially after the engine gets too hot once or twice, but not hot enough to blow the HG) where the #4 or #6 injector will stick open and leak gas into the cylinder after the vehicle is turned off. That, in turn, leads to bad misfires on startup. Replacing my #4 injector fixed it for me 100%. Be careful though, as there are some crappy remans out there.

Cleaning the injectors doesn't help, as it does nothing to solve the injector's actual issue of sticking open.
Thanks for the info Kevin. What is a good brand of remanufactured injector for this engine? Is OEM the best?
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Old 10-02-2019, 09:01 AM #940
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Quote:
Originally Posted by rwloos45 View Post
Thanks for the info Kevin. What is a good brand of remanufactured injector for this engine? Is OEM the best?
OEM is ideal. I got one from Rockauto and it's working fine so far. It appears to be an OEM reman.

I just can't recommend getting any from eBay. I got a set of 6 (supposedly OEM remanned) from there thinking to just replace all of my injectors. I confirmed that at least 3 did not work properly. Either causing a misfire when used, or leaking gas when the fuel rail pressurized. I gave up on the rest and returned the whole set.
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Old 10-02-2019, 02:28 PM #941
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Quote:
Originally Posted by kcdehart View Post
OEM is ideal. I got one from Rockauto and it's working fine so far. It appears to be an OEM reman.

I just can't recommend getting any from eBay. I got a set of 6 (supposedly OEM remanned) from there thinking to just replace all of my injectors. I confirmed that at least 3 did not work properly. Either causing a misfire when used, or leaking gas when the fuel rail pressurized. I gave up on the rest and returned the whole set.
I noticed there were sets of 6 for around $65-90 on Amazon, and then there was a single one for $129 on the Napa site. Think I'll go with the Napa one. https://www.napaonline.com/en/search...=nol-veh-conds
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Old 10-02-2019, 02:29 PM #942
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Quote:
Originally Posted by rwloos45 View Post
I noticed there were sets of 6 for around $65-90 on Amazon, and then there was a single one for $129 on the Napa site. Think I'll go with the Napa one. https://www.napaonline.com/en/search...=nol-veh-conds
Yeah, currently waiting on a refund for one of those eBay/Amazon sets........

Napa should be fine. My rockauto one was a refurb for around $35 (with $10 core) and is working great.
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Old 10-03-2019, 12:17 AM #943
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*** V6 Head Gasket Action Request ***

The “running water” sound got much worse over the last week, at start up, idle and driving. Then I got the P0304 on cold start with back to back startups but it disappeared. Heater started blowing cold air until i gave it gas and you heard coolant rushing through the heater core and the air would finally get warm. We tried burping the cooling system and got never ending bubbles. Leak down test confirmed. 181k. 2005, early to mid 05 build date. Might do a hydrocarbon test for fun but probably pointless. I should add that I never saw the temp gauge rise over half or just below halfway.

Last edited by alextmullis; 10-03-2019 at 12:19 AM.
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Old 10-03-2019, 02:19 PM #944
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I may just be a nut job.
I seemed to be noticing this HG deal a number of years ago.
Convinced myself i was also effected by this.


I loose 1/4" from the overflow res every 5k miles, for about the last 10 years.
I am assuming it is passing out the #6 cylinder.

Never over heated.

Have 82k on it now.
Actually had a small piece of what looks like a chunk of the HG gasket come out of the radiator after that last 3x drain and fill i did last spring.

Some thoughts...
Say you loose 1/4" like i am every 5k and do not ever notice, eventually your going to be low...maybe the "waterfall sound" effect due to air gap?
This low condition may amplify the condition causing failure.

Again this is just some idle ramblings of a T4R owner.
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Old 10-03-2019, 04:23 PM #945
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Quote:
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I may just be a nut job.
I seemed to be noticing this HG deal a number of years ago.
Convinced myself i was also effected by this.


I loose 1/4" from the overflow res every 5k miles, for about the last 10 years.
I am assuming it is passing out the #6 cylinder.

Never over heated.

Have 82k on it now.
Actually had a small piece of what looks like a chunk of the HG gasket come out of the radiator after that last 3x drain and fill i did last spring.

Some thoughts...
Say you loose 1/4" like i am every 5k and do not ever notice, eventually your going to be low...maybe the "waterfall sound" effect due to air gap?
This low condition may amplify the condition causing failure.

Again this is just some idle ramblings of a T4R owner.

Have you performed a coolant pressure test? I wonder if a lot of intake manifold gasket/water pump leaks have been misdiagnosed for HG issues.
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