Hey all,
Last couple of weeks after no mods or anything my 2005 LX470 has been cutting out while driving. I’ve been trying to establish a pattern of when it happens but the closest I can get to is when I make a turn and/or on a decline, slight one usually. Today it happened in an incline! No signs prior, all I get is cut out, lights in dash reset and sometimes I can save it and drive away and sometimes I have to roll off to the side with no PS and restart it. Anyway I have read a lot from other posts and have initiated a troubleshooting plan so wanted to give back to the community and let you all know how it’s going …..
1. Brand new Genuine MAF - no change
2. Loosened petrol cap (read that somewhere) - no change
3. Moved breather bracket away from fuel resistor to allow airflow around resistor - no change
4.a.Noticed my deep belt is sorta not tracking perfectly, a little slackness in the tensioner so about to install new genuine tensioner assembly
4.b. Had some belt squealing for some weeks and changed out the alternator thinking maybe that caused the cutting out - no change but belt squealing stopped.
4.c. PS pump sounded iffy, so replacing that right now with tensioner and new belt.
That’s as far as I’ve got right now.
Not keen on doing fuel pump yet as I figure if the fuel pump was failing it would splutter and die rather than completely cut off. I think it’s either something electrical, or the belt causes timing to slip… dunno.
Next steps are swap out ECU main relay and Fuel Pump Relay with new genuine which I have already bought.
After that I’m going for fuel pressure regulators and fuel pump.
After that I’ll go back to the drawing board probably dust off the old multimeter and do some needle in the haystack work.
Oh, I’ve also changed my battery terminals on a new battery.
Happy to take any other suggestions or experiences.
Last couple of weeks after no mods or anything my 2005 LX470 has been cutting out while driving. I’ve been trying to establish a pattern of when it happens but the closest I can get to is when I make a turn and/or on a decline, slight one usually. Today it happened in an incline! No signs prior, all I get is cut out, lights in dash reset and sometimes I can save it and drive away and sometimes I have to roll off to the side with no PS and restart it. Anyway I have read a lot from other posts and have initiated a troubleshooting plan so wanted to give back to the community and let you all know how it’s going …..
1. Brand new Genuine MAF - no change
2. Loosened petrol cap (read that somewhere) - no change
3. Moved breather bracket away from fuel resistor to allow airflow around resistor - no change
4.a.Noticed my deep belt is sorta not tracking perfectly, a little slackness in the tensioner so about to install new genuine tensioner assembly
4.b. Had some belt squealing for some weeks and changed out the alternator thinking maybe that caused the cutting out - no change but belt squealing stopped.
4.c. PS pump sounded iffy, so replacing that right now with tensioner and new belt.
That’s as far as I’ve got right now.
Not keen on doing fuel pump yet as I figure if the fuel pump was failing it would splutter and die rather than completely cut off. I think it’s either something electrical, or the belt causes timing to slip… dunno.
Next steps are swap out ECU main relay and Fuel Pump Relay with new genuine which I have already bought.
After that I’m going for fuel pressure regulators and fuel pump.
After that I’ll go back to the drawing board probably dust off the old multimeter and do some needle in the haystack work.
Oh, I’ve also changed my battery terminals on a new battery.
Happy to take any other suggestions or experiences.