Hello good mudder folk. I hope you don't mind me dropping by.
I have trawled widely around web world and this site seems to have a lot of experienced Toyota, and other types, answering all sorts of techy questions.
So I am new here but have owned my truck, a 1993 LJ71 (Jap import to New Zealand) since 2000, I have had various problems with it, what a surprise, the transfer case filled up with A.T.F., the left rear axle seal leaked over the brake bits, the ever popular cracked cylinder head on these 2L-TE motors, busted radiator, and so it goes on.
So, months back, on my way to work one morning, cruising down the open country roads.......Hmmmm.... a new noise, or is it just my Knackered ears, all seemed to be going ok, so flog on regardless. However after a few months there was evidence of an oil leak from the lower front of the motor, got to do something about this.
Just prior to being put under house arrest by the NZ Govt, (thanks Covid) I bought the timing belt kit, a water pump, engine oil filter, fuel filter, new glow plugs, the air filter has only a few Km's of use, so left that, new A.T.F and engine oil.
Well after assembling it all back together, I was disappointed to find it running poorly at idle, but intermittently, sometimes good, sometime bad, real bad, almost like it's going to stall, 750 RPM or lower, I have noticed that if there is the slightest motion of the vehicle the problem is not present, so I suspect the ECU is fuelling whilst the speed sensor is sending a signal, but when that stops, fuelling drops, this happens hot or cold.
I replaced the ECU water temp sender, what a dog of a job that was, no. that didn't fix it, isolated the EGR valve, no that's not it, checked the TPS for correct Idle switch setting and resistance readings, all good, I have now bought a real Toyota thermostat, to replace the ten year old after market part, but, on thermostat housing is a "thing" with a pair of wires disappearing into the engine loom, doesn't seem to matter if this is connected or not, P/N as above, however some description call this a "thermistor Assy, (Toyota packaging) and some identify it as a "thermo switch with magnet" , well it can't be both, there is a lot of confusing words about it being for an electric engine cooling fan on some models, (not mine) and A/C cut when engine temp reaches a cooking temperature on other models, possibly, but my A/C died years ago, compressor isolated now.
Having been in the shed for the last month or so while I throw money at it, and not responding to treatment, I am loathed to sprinkle more of my hard earned until I can get some clarification, some of the time has been sucked up by a leaky radiator, in, out, in out.
Anyone out there with any light to shine on the intermittent poor idle performance, and what the "thing" on the thermostat housing is I would be most grateful.
I have trawled widely around web world and this site seems to have a lot of experienced Toyota, and other types, answering all sorts of techy questions.
So I am new here but have owned my truck, a 1993 LJ71 (Jap import to New Zealand) since 2000, I have had various problems with it, what a surprise, the transfer case filled up with A.T.F., the left rear axle seal leaked over the brake bits, the ever popular cracked cylinder head on these 2L-TE motors, busted radiator, and so it goes on.
So, months back, on my way to work one morning, cruising down the open country roads.......Hmmmm.... a new noise, or is it just my Knackered ears, all seemed to be going ok, so flog on regardless. However after a few months there was evidence of an oil leak from the lower front of the motor, got to do something about this.
Just prior to being put under house arrest by the NZ Govt, (thanks Covid) I bought the timing belt kit, a water pump, engine oil filter, fuel filter, new glow plugs, the air filter has only a few Km's of use, so left that, new A.T.F and engine oil.
Well after assembling it all back together, I was disappointed to find it running poorly at idle, but intermittently, sometimes good, sometime bad, real bad, almost like it's going to stall, 750 RPM or lower, I have noticed that if there is the slightest motion of the vehicle the problem is not present, so I suspect the ECU is fuelling whilst the speed sensor is sending a signal, but when that stops, fuelling drops, this happens hot or cold.
I replaced the ECU water temp sender, what a dog of a job that was, no. that didn't fix it, isolated the EGR valve, no that's not it, checked the TPS for correct Idle switch setting and resistance readings, all good, I have now bought a real Toyota thermostat, to replace the ten year old after market part, but, on thermostat housing is a "thing" with a pair of wires disappearing into the engine loom, doesn't seem to matter if this is connected or not, P/N as above, however some description call this a "thermistor Assy, (Toyota packaging) and some identify it as a "thermo switch with magnet" , well it can't be both, there is a lot of confusing words about it being for an electric engine cooling fan on some models, (not mine) and A/C cut when engine temp reaches a cooking temperature on other models, possibly, but my A/C died years ago, compressor isolated now.
Having been in the shed for the last month or so while I throw money at it, and not responding to treatment, I am loathed to sprinkle more of my hard earned until I can get some clarification, some of the time has been sucked up by a leaky radiator, in, out, in out.
Anyone out there with any light to shine on the intermittent poor idle performance, and what the "thing" on the thermostat housing is I would be most grateful.
