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vg30e problems
Posted: Sat Jun 16, 2012 9:20 pm
by Lang Inder
Have recently bought a 1994 nissan terrano powered with the vg30e from factory, problem is it drinks an abnormaly large amount of gas ($40 does about 70km). Have serviced it, new spark plugs, new genuine thermostat, new o2 sensor but no change. Is there any common problems that could be causing this???? (apart from a hole in the fuel tank)
Re: vg30e problems
Posted: Sat Jun 16, 2012 9:33 pm
by torqued
Beautiful motors.
I too have a d21 Vg30e and yes its thirsty wee pig. especially when opened up
Possibly stick a o2 sensor up its bum and check readings?
Re: vg30e problems
Posted: Sat Jun 16, 2012 10:13 pm
by Lang Inder
torqued wrote:Beautiful motors.
I too have a d21 Vg30e and yes its thirsty wee pig. especially when opened up
Possibly stick a o2 sensor up its bum and check readings?
k, but thats the thing i am not even driving it hard, going easy as everywhere, we live out of town so its getting long runs not just round the streets in town.
My parents have a similar truck but with the td27t and it's waay better on gas
Re: vg30e problems
Posted: Sat Jun 16, 2012 10:29 pm
by torqued
Have you checked the ECU error codes?
Ill assume you havnt.
Find ECU,
Start Motor,
Turn on diagnostic mode on ECU
- Find the selector turn dial fully clockwise
Check LED flash after 3 flashes turn fully anticlock wise
Red light is the L/S number and green is R/S
EG - 4 Red followed by 3green = 43 TPS sensor
Let me know and ill look up table
Re: vg30e problems
Posted: Sat Jun 16, 2012 11:10 pm
by Bartman
It could have a leaking injector?
Re: vg30e problems
Posted: Sun Jun 17, 2012 8:52 am
by Lang Inder
torqued wrote:Have you checked the ECU error codes?
Ill assume you havnt.
Find ECU,
Start Motor,
Turn on diagnostic mode on ECU
- Find the selector turn dial fully clockwise
Check LED flash after 3 flashes turn fully anticlock wise
Red light is the L/S number and green is R/S
EG - 4 Red followed by 3green = 43 TPS sensor
Let me know and ill look up table
had already done that, has no fault codes
Re: vg30e problems
Posted: Sun Jun 17, 2012 8:53 am
by Lang Inder
Bartman wrote:It could have a leaking injector?
thats what i was possibly thinking, how do you test them, apart from pulling them out and sending them away for flow testing?
Re: vg30e problems
Posted: Sun Jun 17, 2012 9:02 am
by torqued
Id still put it on a tuning scope
Re: vg30e problems
Posted: Sun Jun 17, 2012 9:44 am
by Bartman
Hand held wideband meters are getting quite cheap nowdays.
Absolutely brilliant tools. I always meant to put one on my a31 slofiro to see why it was such a thirsty pig, But I just sold it instead.
Re: vg30e problems
Posted: Mon Jun 18, 2012 9:57 am
by ratsun81
Did you get a genuine O2 sensor put in or just one of the generic ones? Sometimes the generic ones can cause issues as well.
AFM could be dirty/faulty giving incorrect air signals to the ecu as well.....
Agree that sticking a wideband o2 on it will give you an idea if its spitting too much gas in.