Talk:Hyundai Lambda engine

Engine

Please remove the 3.0L V6 from this page. The 3.0 L is a THETA design, NOT a Lambda design. The Lambda architecture does not support such a small bore.

2012 Hyundai Grandeur 5G gets 3.0L GDI V6 Theta engine

— Preceding unsigned comment added by Lovemykia (talk • contribs) 12:87, 30 June 2011 (UTC)

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Engine / model year range extended one year for Lambda MPI (as opposed to Lambda II MPI) being used in the Sonata model

While this is close to 'original research', it is more 'my reality is different'. The article as stands lists 2005-2008 model years of Sonata for the Lambda MPI (not Lambda II MPI). I have in my possession 2009 model year that contradicts the ending year for this engine in the Sonata model was 2008, at least for North America. I have complete provenance of this car from the date of sale -- I was on the bill of sale. I also have the original window sticker. I am providing some VINs and I would suggest the NTHSA VIN lookup page as validation of example Sonatas that were in the used market at the time of my edit to the page.

Unfortunately I will be personally opening this car's engine case for the first time as I will be addressing an oil leak. (In mid-process 3/15 and updating this note.) This will be the first meaningful engine repair.

As currently stands Hyundai Sonata says that the 5th gen 'NF' Sonata for North America was 2006-2010 and I have no reason to disbelieve that range. I suspect that the V6 engine remained the same throughout that range but have not verified that for the model year 2010, only to 2009 as my first-hand physical evidence and NTHSA verification demonstrate. Accordingly I have only increased range in this article by one to 2009.

NTHSA's VIN lookup/decoder page [ https://vpic.nhtsa.dot.gov/decoder/ ] can be used with the following VINs to substantiate this modification to the page:

• 5NPEU46F29H527423 (Close to my unit but derived by modification, my VIN is not in public circulation thankfully)
• 5NPEU46F69H536593 (From currently first cars.com search result)

Of course this does not clearly illustrate whether these V6's were Lambda MPI vs. Lambda II MPI.

However with the valve covers off, it is blatantly clear that the engine I have at hand has VVT for intake only, while VVT for exhaust being added is the key characteristic shown for the Lambda II MPI engine.

Further, the engine name "G6DB" is listed under both Lambda MPI and Lambda II MPI. The year range for NF / 5G Sonatas was already overlapping before my one year extension.

I haven't found an authoritative source for clarification of that seeming overlap. It seems unlikely to me but given the global market and the regulatory jungle(s), it might be true looking across markets.

It looks like V6 Sonatas came to an end shortly after this. I haven't dug into that either.

Thanks for all the work that went into this article. I offer the above details only to address any concern of untoward editing.

Thanks, Dale

Hello, we use production year not model year, most likely your 2009 MY Sonata was built in 2008. Alawadhi3000 (talk) 18:21, 24 March 2024 (UTC)