I had very similar symptoms and having the CAS replaced at T3 resolved it.desertq45 wrote:Throttle position sensor wouldn't cause this would it?
Greg had to take his to a Senior Tehnician (service manager) to get his bent intake valve diagnosed correctly. Might search for that thread.elwesso wrote:Honestly I dont thinky ou will get anywhere with infiniti dealership. I doubt IoS despite their volume of G50 parts sales actually knows enough about G50s to diagnose a goofy problem like this.
Right. He took it to Midway Infiniti. They had it forever trying to diagnose it. He and I had lunch not too long after that. It's tough to find a dealer that really knows much about the G50.maxnix wrote:Greg had to take his to a Senior Tehnician (service manager) to get his bent intake valve diagnosed correctly. Might search for that thread.
Probably Scott Haneberger down at Euro Imports. He's a former Infiniti of Scottsdale tech and runs this shop independently. His guys did a couple thousand bucks worth of work for me-- including chain guides. It is always an option, and probably better than IofS... even Joe shrugs when I ask his opinion about the service guys re the Q.maxnix wrote:Greg also knows a good independent shop in Phoenix.
I have not... perhaps I should...maxnix wrote:Oh, and you have done the couple of bottles of ISO-HEET?
And this is why I suggested the Consult. Actually, it sounds like you should get the consult cable and do it yourself - same cost. I'm with Wes and others - this does not sound like a MAF problem. I lived with a bad MAF for over a year, and it was never predictable - not at all like yours.Q45tech wrote:Other than fuel pressure we have been provided with none of the half dozen measurements that one would use [measure] in the first few hours to help reach a diagnosis.
One would data a few WOT runs in rpm segments idle to 2k, 2k-4k, and 4k > redline.
MAF voltage, ignition advance, injection time, rpm, TPS voltage. Battery Voltage during runs. Coolant temp.
One would run these at least twice THEN sit down with a liquid and study the numbers for 10-15 minutes.
Congrats on the DIY fix of your Q. As you said, check all the connectors for corrosion. If one connector was corroded chances are they all have some level of corrosion. I had a similar problem with a 90Q that i bought and cleaning the connections made a huge difference.desertq45 wrote:Is the BlazT cable and software compatible with the Q? .......I can use serial connections on my notebook and since it seems much less troublesome than USB, I'm inclined to go that route. Am I on the right track there?
Yeah, you said it. I cleaned all the connectors while I had the plenum off, but obviously missed this one. The darn things get so brittle that when you go to pull them apart the "spring" lock breaks half the time. That is what happened with the secondary CPS when I cleaned it... and I had to wire tie it in place. I still don't know how I missed the main connection next to the airbox... but it was the the problem. Getting the code to stick also helped...elwesso wrote:Very NICE!! Its frustrating and satisfying at the same time when it turns out to be something simple!
Thanks for the response to the Blazt... I'll make sure I get the newer chipset. Do you suggest calling Jason directly?goody94q45 wrote:As far as the consult cable, I have the Blazt setup for my Q but the first cable I was sent had an older chipset (CP210X, same as the NICO group buy) and it would not connect to the ECU. Jason Dear at Blazt sent me a newer cable with an upgraded MDTI chipset and it works great. If you place an order make sure to request this newer chipset. The Blazt package is nice because you can order NissanDataScan from them at the same time. Good luck.
They're in New Zealand so phone calls are out. I can tell you that Blazt customer service was great and Jason never kept me waiting more that a few hours for a response to my emails. Also, shipping from NZ only took 4 days which is quicker than the domestic shippers.desertq45 wrote:Thanks for the response to the Blazt... I'll make sure I get the newer chipset. Do you suggest calling Jason directly?