RI-Lex

iTrader: (4)

so I was driving on the highway I felt the car shutter a little bit when I let off the throttle, A minute later my CEL and vsc/vsc off came off came ON, I stopped the idle speed is at like 4-500 rpm's, the feeling is just like a misfiring is happening, I went to advance auto to pull the codes, it comes back with 7 codes all leading to engine/misfiring the following:
p0300,1349,1346,0307,0305,0303,0301

I get back on the highway and Im going at normal speeds, she drives smooth, If i slow down she hesitations starts again, once I got off the off ramp the shakes start again. please help....TPS perhaps codes dont lead to that though...

Frankdorn

iTrader: (7)

I just had the same problem (albiet with only the 1349 and 1346 codes), and after much searching on CL, determined it could be a dirty/bad oil control valve, VVTi controller, or a couple other options, including something as simple as running Seafoam through the car... (run a search, you'll see.)

Anyway, got frustrated and took it to the dealer -- they told me the valve cover grommets were worn and shriveled and leaking oil into the cylinders causing misfires, and need replacement -- afterward if needed they could continue to diagnose. BUT, in the process of their pokin' around the car the cleared out the CEL/VSC/VSC OFF lights and they haven't come on since!! Yeah!

I'm still replacing the VC grommets, but I think now I'm gonna wait till its warm out!!

RI-Lex

iTrader: (4)

I did replace the valve covers gaskets this passed summer, pulled the plugs as well and there was no signs of Oil at all

AshburnM3

replace the VVTi oil control valve on bank 1, replace or clean the little VVTi screen/filter, change your oil and filter, clear codes and good luck

RI-Lex

iTrader: (4)

I disconnected the negative on the battery, half hr later connected again, all lights off, drove for about 20mins, all lights back ON, but no rough idle at stop lights or while driving it seems to accelerate fine.
P1346 VVT (Variable Valve Timing) Sensor/Camshaft Position Sensor Circuit Range/Performance Problem
(Bank 1) / 18
P134921 VVT (Variable Valve Timing) System Malfunction (Bank 1) 22 / 59

SirBev

iTrader: (1)

That happened to me this summer, however I have a 98 GS3 and the issue was I had a bad coil so I changed all three of them and changed the plugs and wires as well and that took care of that.

RI-Lex

iTrader: (4)

I dont believe is the timing belt or nor do i think it stretch in anyway, because according to the codes the cylinders misfiring are all in bank 1, 1/3/5/7, I also had my electrical system check today, alternator, and battery, I knew it cant really be the issue but i wanted to start my check list with that. does the 400 actually have a oil control sensor or is just the 300?
can anyone post a link of the diagram of the 400 block?

AshburnM3

did u read my post up there^^^^^??? anyway, good luck

daryl stit

Replace the OCV (Bank 1), which is on the drivers side. Easy DIY if you feel like it.

Check this thread... GOOD INFO.

https://www.clublexus.com/forums/gs-...eads-help.html