Engine Light Comes on When Idle

[pete0r]

Hi guys, I have a problem with my VR exec auto, when the car comes to rest at traffic lights etc i get a engine light, unless i put into neutral or park, otherwise when i resume driving the light stays on until i maintain about 100km for a good few minutes. just wondering if anyone had any idea what is going on.

Only error i get is 45 which i understand to be oxygen sensor running rich. Is that enough to bring on an engine light?

 

[SlyVR]

i am having the same problem can someone please help, i basically just replaced my 02 sensor.. and i also get code 45... i dont understand....

 

[kirkson]

Well you guy's arn't alone, I have had the same problem for 5 years, my car is a duel fuel vr and the gas guy told me that the engine light comes on because the gas is an after market intalation and the ecu dosen't recognise it, however the car is and has run ok for the 5 years that I have had it so it dosen't bother me. But if someone can explaine a fix I would be greatfull.
Regards Kirk

 

[burnz]

map sensor on the firewall
check vacumm hore for crackes

 

[kopper69]

I would start by fitting new O2 sensors.

 

[SlyVR]

map sensor on the firewall? could ya give me a hint where it is, dont have a service manual for it ... i just put a 02 sensor in kopper69..kirkson i have a vr, 94, dual fuel...too n yer its annoying the hell out of me..lol

 

[burnz]

little black box just to the right it has
a twelve wires and a vacumm hose that
plugs into intake manifold
its near the vin numbers

 

[SlyVR]

cheers mate, i'll take a look

 

[SlyVR]

changed the map sensor, changed the 02 sensor, no vacumm leaks

i notice the light only comes on when.

1. going down a hill using no acceleration.
2. Sitting at lights for a longish period.

i believe because gas is not injected its constantly flowing, the ecu shows the light because when going down the hill or at lights its putting gas in affecting the ecu. just a personal thought. i might be wrong tho.

if anyone knows any way of getting rid of it please post

cheers SlyVR