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-   -   '04 Gallardo VVT Valve Issue? Common? Other things to test? (https://www.lamborghini-talk.com/vbforum/showthread.php?t=217838)

[email protected] 10-21-2019 11:17 PM

'04 Gallardo VVT Valve Issue? Common? Other things to test?
 
Earlier this year I bought/rescued an '04 6speed Gallardo (something I've wanted since they came out, well before I had the means to pursue one) and have been catching it up on some deferred maintenance and generally trying to put things back right from being "lambro-ed" a bit. After an entertaining start, I'm down to about 3 warnings: marker lights, brake wear warning, and a CEL for what I think translates to the intake VVT misbehaving.

The codes point to the intake side VVT valves on both banks. Is this a common issue? Are there any things I should test before just throwing parts at it? I have the shop manual but it is, how you say, "useless" with respect to troubleshooting flow. lol. I've been spoiled with Honda/Acura literature.

Thanks in advance, I've lurked these forums for years and there is a wealth of knowledge here.

octechnologist 10-21-2019 11:24 PM

I just recently bought an ‘06 and twice now, a bit more than 1 week apart, it has thrown CEL with codes 1366 and 1368, which is intake VVT on banks 1 & 2 respectively.

First time it happened, it went away the next AM, and my performance shop put it on the real-time computer and everything looked spot on, so we dismissed the codes as phantom.

After that, I drove the car to Vegas and back (4 hours each way through desert & mountain 90+ heat) and not a hint of trouble.

Almost exactly 1 week later, on the same uphill road, the car did exactly the same thing. After confirming the codes were the same, I cleared them myself last night, and today no issues.

I had done a little research the first time it happened and I found a couple others who had posted that “ghost codes” like this can happen now and then.

[email protected] 10-21-2019 11:33 PM

Thanks for the data point! These codes, like yours, have been on and off a bit, but definitely more persistent in my case vs what you describe. If I'm interpreting the diagrams correctly the offending valves are not hard to get to or expensive (relatively). I just want to make sure it's not something seemingly unrelated like a vacuum line out of place or some potential oil flow issue that I really need to be concerned about.

vincep99 10-22-2019 11:16 AM

On the break-pad wear: you'll find a lot of posts on how to fix it. I fixed mine in the spring (bad connector on RF), then it came on again two weeks ago. This time it was a broken wire in the LF harness.

Some advise: always wait until the light is on continuously, otherwise it is hard to find an intermittent fault.

Basically this fault will in my mind always come back, because they use 22-gage wire

[email protected] 10-22-2019 12:58 PM

Quote:

Originally Posted by vincep99 (Post 1987454)
On the break-pad wear: you'll find a lot of posts on how to fix it. I fixed mine in the spring (bad connector on RF), then it came on again two weeks ago. This time it was a broken wire in the LF harness.

Some advise: always wait until the light is on continuously, otherwise it is hard to find an intermittent fault.

Basically this fault will in my mind always come back, because they use 22-gage wire

Thanks for the info, that's what I was afraid of. I'd debated just defeating the sensors somehow to turn the light off. I'm a track nerd so I'll give myself a little credit in not being oblivious enough to wear pads to the backing plates without knowing it. :)

vincep99 10-23-2019 11:27 AM

I agree with your philosophy: even tho I don't track my cars anymore, I check the pads at least at every oil change. Also, although i was able to find replacement front pads with sensors, I would have had to go OEM (~ $800) for the rears, so I bypassed those anyway.

There are two ways to bypass:
1. Under the dash (there are a couple of threads here how to do that)
2. AT the left-front wheel (connect pin 1 to ground)

Method #1 is surer because with #2 you still have the chance that the wire from the ECU to LF breaks.

robgreg75 10-23-2019 02:43 PM

You might want to search for Audi V8s having the same valve issues since this engine is based off the audi V8s.

octechnologist 10-25-2019 12:19 AM

'04 Gallardo VVT Valve Issue? Common? Other things to test?
 
My 06 car just threw the same 2 VVT CEL codes today for the 3rd time... with my wife and I driving back from the same mall each time, on that same road, in the same spot each time, after buying something at LV... each time.

I’ve driven ALONE on that same road with no new LV products inside the car at least twice.... and no CEL.

*cue the theme from The X Files*

vincep99 10-25-2019 11:10 AM

The truth is out there.....

Plug in an OBDII code reader and read the Freeze Frame conditions where the codes were set. Obviously they will be the same or similar, but the temps, throttle position, O2 readings etc may give you a clue.

(probably can't detect LV presence though)

[email protected] 10-25-2019 11:54 AM

Quote:

Originally Posted by octechnologist (Post 1988028)
My 06 car just threw the same 2 VVT CEL codes today for the 3rd time... with my wife and I driving back from the same mall each time, on that same road, in the same spot each time, after buying something at LV... each time.

I’ve driven ALONE on that same road with no new LV products inside the car at least twice.... and no CEL.

*cue the theme from The X Files*

I swear mechanical jealously is real. The number of times I'm working on one car and a minimum of one other decides to "throw a fit" is uncanny, lol.


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