Ford Territory Stalling
Posted: Fri Feb 09, 2018 6:17 pm
Hi All,
I'm trying to track down a fault in the Mrs Ford Territory. It's an '05 4.0L petrol with injected LPG.
We've only had the vehicle 6-7 months. What is happening is. In the morning after a short warm up period, we'd go around the corner or try to cross an intersection and it randomly stalls or almost stalls. This happens both on petrol and LPG.
Also when it's fully warmed up and doing 100km on the freeway and cruise control active it will randomly start bucking or stall.
When it's about to stall I give it some throttle and nothing happens. Often I'd put it into neutral if I have time and give it some throttle, then it recovers. Back into drive and it picks up like nothing was wrong.
I've fitted the following serviceable parts, as unknown when they were last replaced.
New Coils x6
New NGK plugs gapped to 0.8mm
New o2 Sensor
Second hand throttle body, as TPS sensors often failed in BA series.
Had the LPG serviced last year, with new filter and lock off solenoid.
Oil and filter both new.
I'm still getting code P1131. DTC P1131 indicates the system is correcting RICH for an overly LEAN condition. The Heated Oxygen Sensor (HO2S) voltage is less than 0.45 volts. This is usually due to a vacuum leak after the MAF. It can also be caused by a bad PCV valve or PCV system hose. It can also be caused by low fuel pressure or a plugged injector.
A vacuum leak would give bad idle and run rough & I couldn't see any loose or split hoses. Fuel pressure maybe, but happens on both fuels. It has me scratching my head.
Any suggestions? Or anyone come across this problem before?
Thanks
I'm trying to track down a fault in the Mrs Ford Territory. It's an '05 4.0L petrol with injected LPG.
We've only had the vehicle 6-7 months. What is happening is. In the morning after a short warm up period, we'd go around the corner or try to cross an intersection and it randomly stalls or almost stalls. This happens both on petrol and LPG.
Also when it's fully warmed up and doing 100km on the freeway and cruise control active it will randomly start bucking or stall.
When it's about to stall I give it some throttle and nothing happens. Often I'd put it into neutral if I have time and give it some throttle, then it recovers. Back into drive and it picks up like nothing was wrong.
I've fitted the following serviceable parts, as unknown when they were last replaced.
New Coils x6
New NGK plugs gapped to 0.8mm
New o2 Sensor
Second hand throttle body, as TPS sensors often failed in BA series.
Had the LPG serviced last year, with new filter and lock off solenoid.
Oil and filter both new.
I'm still getting code P1131. DTC P1131 indicates the system is correcting RICH for an overly LEAN condition. The Heated Oxygen Sensor (HO2S) voltage is less than 0.45 volts. This is usually due to a vacuum leak after the MAF. It can also be caused by a bad PCV valve or PCV system hose. It can also be caused by low fuel pressure or a plugged injector.
A vacuum leak would give bad idle and run rough & I couldn't see any loose or split hoses. Fuel pressure maybe, but happens on both fuels. It has me scratching my head.
Any suggestions? Or anyone come across this problem before?
Thanks