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Discussion Starter #1
Hey guys,

New member here, always been active on forums for my vehicles so happy to be here although it looks like the Gen 1 side is slowing down some. Replacing my trusty 2009 Rav4 V6 with a 2007 Ridgeline EX-L w/ sunroof - has about 97,000miles on it, got it for $11,850 Canadian safetied and E-tested so I think I did OK. Great previous owner with all Honda service records and the Timing Belt/Water pump done already at the time vs. mileage interval.

Decided to get the Ridgeline basically for moving my bikes around (2006 Triumph Bonneville T100 that I've Cafe'd, and a 1999 Kawasaki KLR650 with Ammo can Panniers), and because I've always wanted one and always been a Honda guy (1993 Civic EX 4 door was my first, 2001 Civic 4 door, 2004 Acura TSX).

Main issues I'm worried about are:

1) The dreaded radiator issue - just wondering if I should be replacing it ASAP (it's original), and what the preferred replacement is at this point.

2) I do find the ride a bit rough and the front end kind of crashes over bumps, wondering if my struts are gone but odd that the Honda Dealer Safety didn't pick up on that (he did have to replace the rear stabilizers).

3) Definitely need to upgrade the head unit, it seems I'll lose the stock subwoofer but if past cars are any indication that will be made up by improvement in sound from the replacement anyway - any preference on Double DIN video units? Ease of install (have done cars before but man things have changed).

Thanks in advance for any and all advice!





 

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Discussion Starter #2
Snapped a pic of the lower passenger side fitting on the rad - worrisome I would say?

Brand of replacement and urgency?

Thanks guys

 

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I also just picked up a 07 RTL 93k miles for $10.5k.
I have been looking into the rad mod, it looks like most have used denso or OSC. I will be going with OSC brand.
 

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2006 Ridgeline RTS in Steel Blue
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1) OSC is the preferred company I believe right now. Those that have done a Denso which is the OEM provider, have recently noticed that they seem to have changed the design, but as of so far, it is unknown if the Bellevue washer which is the issue has actually been resolved. As for what priority, I'd want to do it before the snow flies, especially if I was attempting to DIY. Specifically to the OP looking at the pictures, I'd want it out ASAP, it may hold for 3 weeks, 3 months or 3 years. Gambling with my Transmission, I'd want it done. It's a fairly easy job 1 Radiator, maybe some hoses, Upper and Lower Primary (for both of you they are basically 10 yrs old) and 2 gallons of Honda Type 2 coolant. There is at least one Blue Honda Type 2 alternate that I know of Pentosin Pentofrost Spec A3

2) Considering the mileage, I completely believe the Struts could be going. There is a member here in Southern CA, who already replaced his struts, I actually have his originals which I'm planning to rebuild and replace mine before I replace my tires next year.

3) Replacing the HU can cause you to lose the stock subwoofer, a member here "OhSix" has replaced his headunit maybe 2+ years ago and has been beating the snot out of his OEM Sub with an Amp fed the signal from the Sub RCA Outs. He's posted on it and assisted other members doing the same. I'll add a link and forward this thread to him.

In the meantime, maybe both of you could update your profiles which will help with future posts and information. Gryph, I believe your in Canada, as for 88Rover, I'm a little unsure. Some times there are issues which are "regionally" specific, and some specific dealers which have excellent service or pricing which members can recommend. Also get familar with the vB Search in the upper right corner, the Google Search works also, but the vB search stays on the site and provides excellent results.

Here are all the related Radiator and Transmission threads if you haven't found them all.

Happy Reading & Good luck

Radiator Failure @ Cooler Lines

Best Radiator Replacement

Pictures of Corroded/Rusted Radiator Fittings

Radiator Fail on 2006

UOA on ATF

Anatomy of OEM Denso Radiator

Poll(Never Posted) on Radiator/Trans Cooler Solution

Recent Radiator/Transmission SMOD!!!

Radiator comparison: Denso/Spectra/OSC

YouTube Video of Leaking Spectra...
 

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2006 Ridgeline RTS in Steel Blue
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Beautiful truck! Bonus that records and service are included, her provenance is reassuring. Hope she treats you well for years to come. Everything you need to know is here. Baseline fluids. Get rid of OEM engine oil plug in favor of Fumoto or EZ drain. Swap that rad and call it even.

IMO: the latest changes to Denso OEM rad are exactly what needed to happen. They've integrated aftermarket improvements by separating the function of mechanical attachment of the OTW tranny cooler and fluid conduction. IF they've maintained the QA standards imposed by Honda in the original design along with the latest design, it *should be* the bench mark radiator for owners swapping out original.

On you audio desires, you need the sub. You really do. That is, unless you go the route of sound deadening and improved mounting of door woofs. The doors simply don't produce the lowest harmonic, regardless of how "high end" the drivers might be. Many double dins in the Pioneer line up support "network mode" which turns rear channel ouputs into a sub amp. Albeit a relatively low powered sub amp. It should drive the OEM sub no problem, but it won't be prodigious levels of acoustic output. And by employing network mode, you lose rear channel output altogether. Which may or may not b a bad thing for you.

Mak supplied a bunch of links. Dig around. You learn alot.

Congratulations on the RL. She's a purdy gal!
 

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Discussion Starter #7
Hey guys thanks a ton for the info - been without internet for a bit and came back to these great replies, love this forum.

Yah I think I'm gonna swap this rad ASAP - as an FYI when looking at used Ridgelines around me I found multiple that had "new rads" and not preventatively. Had a long chat with one seller who also had a 1992 NSX, and an older CRX - die hard Honda guy, had bought the new Ridgeline - he had his 2008 rad go and rebuilt the tranny, thing was a garage kept beauty - shame about the rad issue.

I'll have to investigate the clunk further, rad is getting done ASAP.
 

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1) OSC is the preferred company I believe right now. Those that have done a Denso which is the OEM provider, have recently noticed that they seem to have changed the design, but as of so far, it is unknown if the Bellevue washer which is the issue has actually been resolved. As for what priority, I'd want to do it before the snow flies, especially if I was attempting to DIY. Specifically to the OP looking at the pictures, I'd want it out ASAP, it may hold for 3 weeks, 3 months or 3 years. Gambling with my Transmission, I'd want it done. It's a fairly easy job 1 Radiator, maybe some hoses, Upper and Lower Primary (for both of you they are basically 10 yrs old) and 2 gallons of Honda Type 2 coolant. There is at least one Blue Honda Type 2 alternate that I know of Pentosin Pentofrost Spec A3

2) Considering the mileage, I completely believe the Struts could be going. There is a member here in Southern CA, who already replaced his struts, I actually have his originals which I'm planning to rebuild and replace mine before I replace my tires next year.

3) Replacing the HU can cause you to lose the stock subwoofer, a member here "OhSix" has replaced his headunit maybe 2+ years ago and has been beating the snot out of his OEM Sub with an Amp fed the signal from the Sub RCA Outs. He's posted on it and assisted other members doing the same. I'll add a link and forward this thread to him.

In the meantime, maybe both of you could update your profiles which will help with future posts and information. Gryph, I believe your in Canada, as for 88Rover, I'm a little unsure. Some times there are issues which are "regionally" specific, and some specific dealers which have excellent service or pricing which members can recommend. Also get familar with the vB Search in the upper right corner, the Google Search works also, but the vB search stays on the site and provides excellent results.

Here are all the related Radiator and Transmission threads if you haven't found them all.

Happy Reading & Good luck

Radiator Failure @ Cooler Lines

Best Radiator Replacement

Pictures of Corroded/Rusted Radiator Fittings

Radiator Fail on 2006

UOA on ATF

Anatomy of OEM Denso Radiator

Poll(Never Posted) on Radiator/Trans Cooler Solution

Recent Radiator/Transmission SMOD!!!

Radiator comparison: Denso/Spectra/OSC

YouTube Video of Leaking Spectra...

Thanks again for the info. Just put my order in at RockAuto for the OSC rad, upper and lower hoses, rad cap, rad drain petcock (didn't know if I needed it), and thermostat all for $277.90 shipped to my door here in Toronto, can't argue with that.

I spoke to my local japanese independent specialist before ordering and they seemed unfamiliar with the failure SMOD issue, had me go into the shop and talk to one of the techs and go over it because he had a 2014 Ridgeline (wasn't sure if it's been fixed on those?). Anyway they said 2 hours labour at $90 shop rate to install (local dealer wanted $560 for the OEM rad, plus 3.5 hours at $135 an hour shop rate - plus taxes I would have been over $1000).
 

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2006 Ridgeline RTS in Steel Blue
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If it was me I'd get a case of ATF, which will allow 3 full drain and fills on the Transmission Fluid and 2 gallons of Honda Type2 Antifreeze/Coolant, if your ordering from a Honda Dealer, you could also get a bottle of Honda Type 2 Extreme Cold Weather Concentrate (-62f), it will lower the standard freeze point (Pure AntiFreeze) where the Type 2 gallon bottles are 50/50 mix(-34f).

It's easy to do and it will give you a good base line of what the transmission fluid is versus what your putting back in. Also you may find improved shifting after changing. If you do change it, it should take 3.5 bottles then drive some and check the transmission level.

Note, the manual snip is from an '06-'08 manual, Honda ATF Z-1 has been replaced with Honda ATF DW-1
 

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If it was me I'd get a case of ATF, which will allow 3 full drain and fills on the Transmission Fluid and 2 gallons of Honda Type2, if your ordering from a Honda Dealer, you could also get a bottle of Type 2 Extreme Cold Weather Concentrate(-62f), it will lower the standard freeze point (Pure AntiFreeze) where the Type 2 gallon bottles are 50/50 mix(-34f). There is also some various Prestone, Zerex (Asian Formula) and some others which will do, being in Canada Type 2 may be expensive from a dealer.

It's easy to do and it will give you a good base line of what the transmission fluid is versus what your putting back in. Also you may find improved shifting after changing. If you do change it, it should take 3.5 bottles then drive some and check the transmission level.
Again can't thank you enough for the wealth of knowledge. I've checked the transmission fluid and it is beautiful clear red on the dip stick. I just got B13 on my maintenance minder so I'll be doing tranny/diff fluids too - though based on my HX from prev owner he said done in June 2014 at a Honda dealer and I have a 2013 report from a different Honda dealer that it was done. So within the last 40k Kms it was done at least once and maybe twice.

Well at 115k in 2013 it says "diff fluid flush". "Transfer case fluid replacement".

Anyhow I'll likely have the coolant flushed, rad swap, diff/transfer/tranny fluid done, and oil change - then I'll be able to enjoy this thing finally instead of stressing. Still mainly driving my RAV4 v6 until this is sorted, don't want to SMOD because I couldn't wait lol.
 

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2006 Ridgeline RTS in Steel Blue
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Again can't thank you enough for the wealth of knowledge. I've checked the transmission fluid and it is beautiful clear red on the dip stick. I just got B13 on my maintenance minder so I'll be doing tranny/diff fluids too - though based on my HX from prev owner he said done in June 2014 at a Honda dealer and I have a 2013 report from a different Honda dealer that it was done. So within the last 40k Kms it was done at least once and maybe twice.

Well at 115k in 2013 it says "diff fluid flush". "Transfer case fluid replacement".

Anyhow I'll likely have the coolant flushed, rad swap, diff/transfer/tranny fluid done, and oil change - then I'll be able to enjoy this thing finally instead of stressing. Still mainly driving my RAV4 v6 until this is sorted, don't want to SMOD because I couldn't wait lol.
With that kind of info, I'd just do a single DnF since the Rad pull you'll end up with some being lost, unless you cap the ends that enter/exit the rad.

Once you pull the old rad, grab those two connections with your hand and see if either break free. Then you'll know your doing it just in time. Some have reported it even breaking while trying to pull the Trans rubber hoses off. Mine required more effort, but I had multiple reports with coolant in the ATF.
 

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Discussion Starter #12
Got the OSC rad installed at the shop, along with tranny/diff/transfer case fluid swap.

Now to enjoy this thing, loved it on the highway this weekend and got 19.6mpg on my last tank (babying it for the most part). Thrilled with my purchase, picked up a used Grom Audio BT3 HON 1B3 Bluetooth adapter for $60 locally - great sound quality for streaming and calls, 30 mins to install.
 
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