G35 power loss
#1
G35 power loss
Well I've been having this problem with my 2003 g35 coupe 138k miles. When I first got it. It had a miss fire amongst other problems I didn't take to notice. When I fix that one kiss fire it was running very powerful like it was suppose to. Then it went bad in 3 days. He fixed that one spark plug and it wasn't missing anymore but I have a major power loss.i initially ended up changing the spark plugs with auto lite double platinum. No change. Then I checked the codes. It went and it had a knock sensor and camshaft sensor code.
Changed them with ones I bought from Napa and still had a knock sensor code and the other went away. So i read more into it and it mentioned the harness. So I bought it from z1 and nothing changed. Changed the o2 sensor. 2 from eBay . I bought 2 down stream by accident and install them. I later bought up stream then changed it. The mechanic convinced me it was maybe the crank shaft and then we changed that. Still experiencing power loss. So in all I changed
Auto lite double plat spark plugs. Autozone
Knock sensor from Napa
Knock sensor harness z1
Camshaft Napa
Crank shaft auto zone
O2 down stream eBay oem
02 up stream Amazon oem
I don't know what else I need to do or what's wrong. Plz I need sum feed back. Last code I have was knock sensor P0327 and o2 sensor P0031
Changed them with ones I bought from Napa and still had a knock sensor code and the other went away. So i read more into it and it mentioned the harness. So I bought it from z1 and nothing changed. Changed the o2 sensor. 2 from eBay . I bought 2 down stream by accident and install them. I later bought up stream then changed it. The mechanic convinced me it was maybe the crank shaft and then we changed that. Still experiencing power loss. So in all I changed
Auto lite double plat spark plugs. Autozone
Knock sensor from Napa
Knock sensor harness z1
Camshaft Napa
Crank shaft auto zone
O2 down stream eBay oem
02 up stream Amazon oem
I don't know what else I need to do or what's wrong. Plz I need sum feed back. Last code I have was knock sensor P0327 and o2 sensor P0031
Last edited by stefelz; 11-26-2015 at 08:02 PM.
#5
My question is. Would that cause a code to pop up . I changed a lot of parts already and my car been running like **** for months now.
#7
Okay is it possible that there probably dying? Or just very week because if I do that. I would just get a miss fire. And I currently don't have a miss fire
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#9
Registered User
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#11
I've actually tried and either the mechanic is telling me the car drives "fine" or it's a part that I already changed and don't take me seriously like I have no idea what I'm talking about ( I'm 19)
#12
Well as an update I believe the mechanic changed the wrong sensor. So I want to know how many o2 sensor does the car have. I read one place there's 4 & another place 3. Which is it?
#15
G35 power loss
The car has 4 o2 sensors cause it is V6 engine 2 each cylinder pack, 1 before cat. conv. and 1 after cat conv. same other side.It is very easy see it under the car. No science.