OK, in my HJ60 cruiser... stock 2H. the oil pressure gauge sits at the high mark when first started, then whilst warming up to running temp, it slowly drops to the low mark.
I'm presuming it's a faulty Oil Pressure switch... now how can I test if it is that or not????
Cheers.
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Oil Pressure Gauge???
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Oil Pressure Gauge???
When in doubt..... UTE-ERIZE it!!!
probably cause your oil is cold at start up so its not as viscous so it pumps up and holds pressure easier ,
then as it warms up it thins out it is a little harder to keep pressure usaully at idle , when you bring your revs up should pump up again. maybe try changing your oil first if you think its still no good and go from there.
cheers.
then as it warms up it thins out it is a little harder to keep pressure usaully at idle , when you bring your revs up should pump up again. maybe try changing your oil first if you think its still no good and go from there.
cheers.
HEY CHARGER wrote:probably cause your oil is cold at start up so its not as viscous so it pumps up and holds pressure easier ,
then as it warms up it thins out it is a little harder to keep pressure usaully at idle , when you bring your revs up should pump up again. maybe try changing your oil first if you think its still no good and go from there.
cheers.
Oil has only done about 200-300 kms. Using Castrol RX super.. think that is what it is by memory. the engine has been rebuilt not long before that(engine hasn't done 1000kms yet), with everything being fixed whilst apart. Just need to be able to test the pressure switch to see if its faulty and eliminate the easy options first.
When in doubt..... UTE-ERIZE it!!!
First, make sure your not using a heavy weight oil.
Second, throw a guage in, i took the guage sender out and put a mechanical guage in, Theres really nowhere else to put a guage in. Test the pressures at cold and temp, these specifications are in the toyota manual, and possibly the gregories aswell. (i will look these up for you if you dont have either)
I have heard alot of people having problems with the guage being faulty. So this may be your problem. Toyota want i think $60 for the sender and about the same for the guage, so alot of people just end up fiting a good quality aftermarket guage. The EDIC relies on the oil pressure switch rather than the guage so you can safely remove the guage sender without worring about your engine cutting out.
If this doesnt bring light onto your situation, drop the oil pressure relief valve, near the front bottom drivers side of the block, big plug, about 21/24mm? Described in both the gregories and toyota manuals.
There is a plunger and spring behind the plug, to get the plunger out, pull the plug and spring out, then turn motor over, not for long though as oil is gonna poump out aswell, the plunger will come out and fall into the dish you have under it, it may bounce off your spring and end up somewhere else so have a look around
If you have a dowl about 12mm you can shave the end of the dowl down to about 10mm and then it will slide in the back of the plunger and that will drag it out. Turning the motor over is the easy/messy way tho.
Check for wear on the plunger, you can get cheap replacement springs and plungers from aftermarket sources, or you can get them for less than $20 at toyota.
If there is alot of wear on the plunger, it has probably worn a step inside the bore. Get a timber dowl about the same size as the plunger, (12mm?)cut a slit in the end, wrap some wet n dry around it (stick it in the split then go round 3 times or so, to make up to the right diametre), then spin it around inside the bore, your trying to remove the step only, you dont want to increase the size of the bore too much as this could cause more chance of the plunger sticking.
Alot of people have success by just replacing the plunger, you could try that before linishing the bore.
Normally if your getting low pressure the spring in this relief valve has compressed, but if your getting high pressure, its more than likely the plunger sticking. (if youve ruled out other possibilities)
The high pressure shouldnt cause a problem in your engine, if it gets too high the oil filter will let go which is incredibly messy and inconvenient, but it really shouldnt do any damage to the engine since the EDIC will detect the low oil pressure and cut the engine within 5-10 seconds. The high pressure will normally push the rubber seal of the oil filter out, or the seam of the oil filter will split.
Valvaline had a writeup about this exact problem, oil pressure releief valve sticking, in the IAME magazine my old man gets. I thaught it was valvaline covering thier asses for thier crappy filters at first, but after investingating the problems with the 2H, i can only imagine how many problems they have in lesser quality engines.
Second, throw a guage in, i took the guage sender out and put a mechanical guage in, Theres really nowhere else to put a guage in. Test the pressures at cold and temp, these specifications are in the toyota manual, and possibly the gregories aswell. (i will look these up for you if you dont have either)
I have heard alot of people having problems with the guage being faulty. So this may be your problem. Toyota want i think $60 for the sender and about the same for the guage, so alot of people just end up fiting a good quality aftermarket guage. The EDIC relies on the oil pressure switch rather than the guage so you can safely remove the guage sender without worring about your engine cutting out.
If this doesnt bring light onto your situation, drop the oil pressure relief valve, near the front bottom drivers side of the block, big plug, about 21/24mm? Described in both the gregories and toyota manuals.
There is a plunger and spring behind the plug, to get the plunger out, pull the plug and spring out, then turn motor over, not for long though as oil is gonna poump out aswell, the plunger will come out and fall into the dish you have under it, it may bounce off your spring and end up somewhere else so have a look around
If you have a dowl about 12mm you can shave the end of the dowl down to about 10mm and then it will slide in the back of the plunger and that will drag it out. Turning the motor over is the easy/messy way tho.
Check for wear on the plunger, you can get cheap replacement springs and plungers from aftermarket sources, or you can get them for less than $20 at toyota.
If there is alot of wear on the plunger, it has probably worn a step inside the bore. Get a timber dowl about the same size as the plunger, (12mm?)cut a slit in the end, wrap some wet n dry around it (stick it in the split then go round 3 times or so, to make up to the right diametre), then spin it around inside the bore, your trying to remove the step only, you dont want to increase the size of the bore too much as this could cause more chance of the plunger sticking.
Alot of people have success by just replacing the plunger, you could try that before linishing the bore.
Normally if your getting low pressure the spring in this relief valve has compressed, but if your getting high pressure, its more than likely the plunger sticking. (if youve ruled out other possibilities)
The high pressure shouldnt cause a problem in your engine, if it gets too high the oil filter will let go which is incredibly messy and inconvenient, but it really shouldnt do any damage to the engine since the EDIC will detect the low oil pressure and cut the engine within 5-10 seconds. The high pressure will normally push the rubber seal of the oil filter out, or the seam of the oil filter will split.
Valvaline had a writeup about this exact problem, oil pressure releief valve sticking, in the IAME magazine my old man gets. I thaught it was valvaline covering thier asses for thier crappy filters at first, but after investingating the problems with the 2H, i can only imagine how many problems they have in lesser quality engines.
Cheers Shadow,
That's given me a heap of htings to check out. Will have to do it next weekend though, this weekend away at thr relo's. Will keep you up to date on how things go.
One thing though.. please explain EDIC, I'm stil learning here.....
Thanks for the detailed info though, much appreciated.
Brighty.
That's given me a heap of htings to check out. Will have to do it next weekend though, this weekend away at thr relo's. Will keep you up to date on how things go.
One thing though.. please explain EDIC, I'm stil learning here.....
Thanks for the detailed info though, much appreciated.
Brighty.
When in doubt..... UTE-ERIZE it!!!
EDIC stands for electronic diesel injection control
Its the thing which controls the fuel pump, uses a little electric motor and a rod which controls the pump, moves from no fuel, to fuel, and over fuel, over fuel is used in starting.
The fuel control relay (found in the passengers kick panel) has a low oil pressure input (comes from a oil pressure switch, not from the guage's sender), so that if the oil pressure doesnt come up within 5 or so seconds of start, it turns off the edic, which stops the engine. If the engine loses oil pressure, the fuel control relay will also turn off the EDIC within about 5 seconds resulting in no? damage to your engine.
prior to the invention of an EDIC you had to either manually control the push rod to the fuel pump, or even older there was no control of the pump, rather the air suply was shut off.
Its the thing which controls the fuel pump, uses a little electric motor and a rod which controls the pump, moves from no fuel, to fuel, and over fuel, over fuel is used in starting.
The fuel control relay (found in the passengers kick panel) has a low oil pressure input (comes from a oil pressure switch, not from the guage's sender), so that if the oil pressure doesnt come up within 5 or so seconds of start, it turns off the edic, which stops the engine. If the engine loses oil pressure, the fuel control relay will also turn off the EDIC within about 5 seconds resulting in no? damage to your engine.
prior to the invention of an EDIC you had to either manually control the push rod to the fuel pump, or even older there was no control of the pump, rather the air suply was shut off.
Shadow wrote:EDIC stands for electronic diesel injection control
Its the thing which controls the fuel pump, uses a little electric motor and a rod which controls the pump, moves from no fuel, to fuel, and over fuel, over fuel is used in starting.
The fuel control relay (found in the passengers kick panel) has a low oil pressure input (comes from a oil pressure switch, not from the guage's sender), so that if the oil pressure doesnt come up within 5 or so seconds of start, it turns off the edic, which stops the engine. If the engine loses oil pressure, the fuel control relay will also turn off the EDIC within about 5 seconds resulting in no? damage to your engine.
prior to the invention of an EDIC you had to either manually control the push rod to the fuel pump, or even older there was no control of the pump, rather the air suply was shut off.
Brighty has an HJ60 - AFAIK they didn't have EDIC.
John
Bush65 wrote:Shadow wrote:EDIC stands for electronic diesel injection control
Its the thing which controls the fuel pump, uses a little electric motor and a rod which controls the pump, moves from no fuel, to fuel, and over fuel, over fuel is used in starting.
The fuel control relay (found in the passengers kick panel) has a low oil pressure input (comes from a oil pressure switch, not from the guage's sender), so that if the oil pressure doesnt come up within 5 or so seconds of start, it turns off the edic, which stops the engine. If the engine loses oil pressure, the fuel control relay will also turn off the EDIC within about 5 seconds resulting in no? damage to your engine.
prior to the invention of an EDIC you had to either manually control the push rod to the fuel pump, or even older there was no control of the pump, rather the air suply was shut off.
Brighty has an HJ60 - AFAIK they didn't have EDIC.
ALL 60's with a 2H will have an EDIC motor. Drivers side rear of the engine.
Brighty -out of curiosity, what weight/viscosity is the oil?
Luv the sound of a diesel,
especially a Chev 6.2!
Its GONE.........Replaced by a qik HDJ105.
The bigger the boy, the bigger the TOY!!
especially a Chev 6.2!
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The bigger the boy, the bigger the TOY!!
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