My 2003 Infinity G35 engine shuts off


Asked by samth1 May 05, 2012 at 03:25 PM about the 2003 INFINITI G35 Sedan RWD with Leather

Question type: Maintenance & Repair

I have a 2003  Infinity G35 sedan the engine will die at a stop, the check engine light, slip light and VDO light will come on . I took it to a repair shop they told me it had bank 2 camshaft position sensor & knock sensor codes. They wanted $1800.00 to change out both camshaft position sensors, crankshaft position sensor & knock sensor. I changed out bank 2 camshaft position sensor, knock sensor, cleaned intake manifold & throttle body, changed out right side valve cover (leaking oil into 2 spark plug wells) & new irridium spark plugs. reassembled everything. Started car, ran fine  for about a day and started doing the same thing. any suggestions would be great.  

15 Answers


I changed the bank 1 camshaft position sensor instead of the bank 2 camshaft position sensor. When I changed the correct sensor, the car started & ran good, it has been 3 weeks with no problems.

23 people found this helpful.

change out bank one sensor also , there was a recall on this ,but I don't think it's expensive. Are you getting a crank position sensor code n your scanner these were also defective on early infinitis. Also lube up the throttle valve shaft and make sure the throttle valve is not sticking closed. Mine was ,same symptom idle drop and stalling whenever I stopped. Cleaning the throttle valve thoroughly fixed this car is running good

12 people found this helpful.

i have the same problem in my 2004 g35...the mechanic said i have to replace 3senosrs and it comes to about $300..which isnt bad finding out each sensor is roughly around $70-80 a i have to replace all the sensors or just seeing people state that they changed only one(cam shaft sensor in bank 1) do i really have to replace all 3 or just that 1..

35 people found this helpful.

key switch can cause this problem..computers read for sensors but wont be accurate so u'll find ur self spending plenty money..

9 people found this helpful.

I have a 2007 Infiniti g35 a change out the camshaft sensors and bank one actually you both of them on the passenger side of the engines an it still stalling out what else could be the problem

14 people found this helpful.

I have a 2007 Infiniti g35 i change out the camshaft sensors and bank one actually both of them on the passenger side of the engines an it still stalling out what else could be the problem

12 people found this helpful.

My 2006 G35 just had all 3 lites come on yesterday. Ive been doing some research & they said that if the throttle body needs to be changed it can cause some of the same symptoms, Jermaine3715? I am about to call Nissan & get a price on the CAM sensors, I think my husband can change these with no problem, but if the Dealer doesnt charge too much I may go ahead & let them do it..

6 people found this helpful.

I have a 2003 Infiniti g35 it's had a problem start for awhile now. It will roll over but not start then if u wait 30 seconds and it will start. Now it shutting off going down the road

14 people found this helpful.

And I have to roll it over for about five or more seconds to get it to start . Any ideas?

7 people found this helpful.

Mine was doing all of this....i had my mechanic replace the sensor A- crank...problem solved

5 people found this helpful.

So from wat I am reading there is 3 camshaft sensors in these cars .. So from what I'm reading on ur issuse I think its the Driver side camshaft sensor .. I'm thinking from readi g ur post that this is my issue also the driver side camshaft sensor .. I think I'll start on the driver side. On my car... So I hope this helps you a lot but keep me posted let me know if this helped you out or not... Thanks a bunch for your info and ill keep you posted on my car also!!!!!! Hope it helps !!!!

2 people found this helpful.

crankshaft sensor at the bottom of the car is the problem. 45 bucks and you can replace yourself. id do this before replacing the 2 camshaft sensors which cost 80 each

10 people found this helpful.

Can the camshaft connectors be replaced?


Yes, the camshaft sensors can be replaced... one 10mm bolt per sensor. They are located near top of engine against the fire wall. I changed the drivers side a few month ago and had no more issues. I just put new sparkplugs in and came up with camshaft sensor fault on passenger side. I replaced it and fault remains. I have a feeling that it is a wire problem. In order to change the spark plugs you must force the wire harness out of the way of for all six plugs. I am going to check the continuity of the 3 wires for the cam plug and check for an open/broken wire.

2 people found this helpful.

That's ridiculous I do all my repairs myself because most auto repair shops are parts replacers not trouble shooters. 1800 is a ripoff, a nice aftermarket bank 2 sensor runs you 65-128 put it on yourself. I will tell it's a pain in the ass. They positioned this sensor so people without any mechanical sense would have to pay that crazy price for literally 10 minutes of labor. What a RIP off

1 people found this helpful.

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