60 series diesel . High oil pressure problems?

Submitted: Wednesday, Jan 11, 2006 at 08:43
ThreadID: 29557 Views:5976 Replies:9 FollowUps:3
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G, day all.
My 60 series dieselToyota with turbo modified engine, occasionally cuts out. Everything just stops. It then restarts almost immediately an runs just fine. My mechanic thinks high oil pressure mat trigger a cut out switch, but because the problem is very rare, it is hard to track down. When starting from cold, everything often stops dead 2 secs after I start to move, then restarts and away we go with no probs. He thinks this is caused by a low pressure safety switch as well.
Anyone have any experiences in this area?
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Reply By: Footloose - Wednesday, Jan 11, 2006 at 09:26

Wednesday, Jan 11, 2006 at 09:26
My old HJ60 non turbo used to cut out at one stage. Driving down the freeway and the motor just stopped. Did this a few times. Turned out to be the battery.
AnswerID: 147745

Reply By: paro - Wednesday, Jan 11, 2006 at 09:58

Wednesday, Jan 11, 2006 at 09:58
Mate......My 60 Series diesel [no turbo] does the same thing intermittently but only at a cold start. In my case it doesn't always happen but I've noticed it occurs more frequently when the 4bee hasn't been used for a week or 2.
Neither the local mechanic nor mates have been able to shed any light on the problem. If you do learn the cause, please post to the website.
AnswerID: 147748

Reply By: Member - Tony G (ACT) - Wednesday, Jan 11, 2006 at 10:14

Wednesday, Jan 11, 2006 at 10:14
Have a look at things like:

Edic motor
Fuel control relay &
Low oil cutout switch.

Most of thoes will shut the motor down without warning if they are at fault.
AnswerID: 147753

Reply By: Member - Pesty (SA) - Wednesday, Jan 11, 2006 at 10:20

Wednesday, Jan 11, 2006 at 10:20
Hi mfewster
Am unaware of such a switch, but if you have high oil pressure your pressure relief valve on top of you oil filter body may be sticking or worn, this will sometimes result in a disfigured oil filter or blown oil filter seal.
Sounds more like your injector pump cut out is playing up, ( which usually kills motor when you switch it off).
I suppose you have checked all the fuel system filters etc including the water trap one on the chassis at the back?
Dont think these are electrically connected to cutting out engine though.

Cheers Pesty
AnswerID: 147756

Reply By: Nav 8 - Wednesday, Jan 11, 2006 at 13:58

Wednesday, Jan 11, 2006 at 13:58
I assume you are talking about the 2H diesel engine of which I am very familiar with and have rebuilt quite a few. This problem is quite commen with these engines when they have done a few Ks.This engine has a LOW oil pressure cut out switch as a safety device. If the vehicle stands for a period of time the oil will drain from the egine to the sump, if the engine is a bit worn and the oil pressure takes a little more time to pick up somtimes the cut out switch will activate and shut the engine down but it will be OK on the second start. This is not something to be conserned about unless you are getting a cut out while driving or at engine idle.
The oil pressure relive valve is situated in the oil pump at the bottom front of the engine just behind the front pully it consists of a spring loaded ball. The ball sometimes wears into the alluminum seat or the spring loses tension and a drop in pressure results. It can be accessed easly by a large plug I think a1inch ring spanner to take out the ball and spring. There is a nominal length for the spring,cant remember what it is,but its in the workshop manual.
Another interesting problem Arrises from this pressure relive valve, that is a loss of vacum to the brakes, The vacum pump located on the back of the alternator has vanes that are forced out by oil pressure and if the pressure is low the vanes are not properly seated and result in a lack of vacume to the brakes.
Hope this is of some help,,,, Regards Nav. PS. The cut out protection switch is seperate to the pressure relive valve.
AnswerID: 147784

Follow Up By: paro - Wednesday, Jan 11, 2006 at 14:11

Wednesday, Jan 11, 2006 at 14:11
Cheers Nav8........Thanks for the detailed reply. I'll follow up on the weekend.
FollowupID: 401098

Reply By: DesC - Thursday, Jan 12, 2006 at 18:29

Thursday, Jan 12, 2006 at 18:29
I saw a dodgey engine earth strap terminal also create this problem on a twin headlight 60 series. But FYI, Also seen 2 x 2h oil pressure relief valves in the timing cover stick when they get a few miles on them. When they stick they blow the oil filter clean off at the crimp and you lose all your oil and then the low oil pressure cut off cuts the engine. Both of these engines had just changed the brand of oil that they used and the valve must have sat in a different place in the bore (due to viscosity). Apparantley a corolla valve will fit in there (which is a fraction longer than the original) so that the timing cover doesn't need to be replaced or sleeved or whatever.
AnswerID: 148109

Follow Up By: mfewster - Friday, Jan 13, 2006 at 16:15

Friday, Jan 13, 2006 at 16:15
Hello DesC
My mechanic is especially interested in your corolla solution. Do you have more details about which Corolla model valve can be used or any other details?

FollowupID: 401594

Follow Up By: DesC - Friday, Jan 13, 2006 at 17:35

Friday, Jan 13, 2006 at 17:35
i will find out off my mate what model corolla it was.He found out when he traded his 60 series in Darwin on an new turbo 100. I think it may have been a 1.2 or 1.3 in those real early ones and i think the mechanic at the Darwin dealer told him about it.
FollowupID: 401622

Reply By: Chriscd - Thursday, Jan 12, 2006 at 22:39

Thursday, Jan 12, 2006 at 22:39

Only run my non turboed 60 series at weekend - have same problem on first start - at times will occur twice - advised by Toyota trained mecnic that it is due to low oil pressure - increase of revs slightly with hand throttle on cold start and no problem.


AnswerID: 148192

Reply By: mfewster - Friday, Jan 13, 2006 at 16:18

Friday, Jan 13, 2006 at 16:18
Thanks everyone
I have passed all these to my local mechanic and he is working through them.
Using the handthrottle slightly when coldstarting seems to have fixed the cutout on start up.
AnswerID: 148336

Reply By: DamoHJ61 - Friday, Jan 13, 2006 at 23:33

Friday, Jan 13, 2006 at 23:33
I recall a post from some time back, someone mentioned that an engine immobiliser had been fitted and the shut off to the solenoid had been used as part of the alarm/immobiliser, the wiring had been shaken loose or rubbed through and the result was some inconsistant shut downs from time to time.
The factory turbo does have a solenoid (?) controlled fast idle from start up, perhaps you guys are on the right track with a low cold idle.
I would imagine that the gear used in the factory turbo could be retrofitted to an aftermarket set up???
AnswerID: 148456

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