Hi everyone I have a 1998 4.6lt V8 running on LPG which has started to develope a servere thirst when running on petrol. Usually £35.00 worth of fuel last 350-400 during the mildst of winter however lately I'm only getting 160-200 miles.
My initial thought was maybe the petrol injectors werent closing fully when switching over to lpg and thus using both fuels. I also noticed that the average mpg calculation was changing (about 1-2 mpg depending on how i was driving) when running on LPG, as I thought the sensor for the fuel usage was on the petrol injectors, this shouldnt keep changing.
So I hooked up my nanocom last night to see if I could see anything on the engine ecu, but as complete novice not exatly sure what I was looking for, however I did get a fault code P1187 - Oxygen sensor heater circuit inferred
open circuit, upstream sensors which possbily implies I have a lambda sensor issue and needs replacing but doesnt state which.
Looking at RAVE, changing Lambda sensors doesnt seem too difficult but before I go head and spend a few £££, would like your advice.
thank you in advance
David
My initial thought was maybe the petrol injectors werent closing fully when switching over to lpg and thus using both fuels. I also noticed that the average mpg calculation was changing (about 1-2 mpg depending on how i was driving) when running on LPG, as I thought the sensor for the fuel usage was on the petrol injectors, this shouldnt keep changing.
So I hooked up my nanocom last night to see if I could see anything on the engine ecu, but as complete novice not exatly sure what I was looking for, however I did get a fault code P1187 - Oxygen sensor heater circuit inferred
open circuit, upstream sensors which possbily implies I have a lambda sensor issue and needs replacing but doesnt state which.
Looking at RAVE, changing Lambda sensors doesnt seem too difficult but before I go head and spend a few £££, would like your advice.
thank you in advance
David