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Discussion Starter #1
I decided to open topic about my gearbox problem, it doesn't work properly. i'll try to explane what problems i have exactly. i hope you will help me.

1. When i select "D" (drive) postition, "2" or "1", car starts moving very slowly, it doesn't have power, when i push gas pedal it has no reaction, it still continious moving slowly.
when point approachs 2000 r/min then i feel a bit power.
It doesn't do "kick Down" too, when i push gas pedal it doesn't cluch down to accelerate.

2. Gearbox starts working from the gear i have selected, for example: If i select "2" position, it starts from second gear and not from 1st gear, it doesn't bear if the car is stopped and starts moving.

3. POWER light always on, it doesn't bear if i select AUTO/POWER, it's permanently lights.

4. when i move 50-60km/h speed and select "D" position gearboxs doesn't cluch in "3" gear, it still moves with second gear. so 3 and 4 gears doesn't work.
if i wallaw with this speed, i feel gearboxs tries to cluch in third gear, engines point acting up & down but it doesn't cluch still.

I know its neccesary to show it to specialist, i'm going to repair it next week, but i want to know previous what will be the problem inside? will it be AT computer problem or its only mechanic damage?
 

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Hi Hushta, boy, sounds like major probs with the torque converter to start with. Presume the ATF level is correct and good quality oil (and the right oil)?
Point 2) above is correctly working. If you select 2 it should stay in 2, if 1, stay in 1. This is for moving off in 2 in mud or snow/ice.
I think you should get your torque converter fixed first, then move on to the next probs.

Edit! Ref Hushta's correction below, Patrols DO change from 1 to 2 when held in 2...tried it today.....sorry for the confusion
 

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Discussion Starter #3
Hi Hushta, boy, sounds like major probs with the torque converter to start with. Presume the ATF level is correct and good quality oil (and the right oil)?
Point 2) above is correctly working. If you select 2 it should stay in 2, if 1, stay in 1. This is for moving off in 2 in mud or snow/ice.
I think you should get your torque converter fixed first, then move on to the next probs.
you know oil is not right, i changed 6 liters Dextron II, then as i knew from this forum it damages safari`s gearboxes. so if i change oil completely, i don't think it will help now, it`s too late.

About selectin "2" position i can say that it wasn't working this way, before damaging when i had selected 2 position gearbox was starting car from 1st gear then it clutched into second, now it starts from second in every sitiuation.
 

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Hushta, your cd of the fsm was sent in the post tuesday. Let me know when you get it.

Have a look at the diagram.
 

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Discussion Starter #5 (Edited)
Twinotter600
Thanks paul! I'll inform you as soon as i get it.
Usually what time it needs to arrive you don't know?

According to this diagram, somthing is wrong that's why Power light is ON. I tryied to make a self diagnos but it didn't work.

The Power was't lighting month ago, but it still didn't make kick down.

I saw TPS link and cleaned it, i'll try to disconnect it, may be it will have an effect.
 

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I have not studied the manual regarding the auto transmission. For basic trouble shooting I would start by disconnecting the TPS/test then reconnect, then computer etc.

I have never post anything to your area so I have no idea how long the cd will take to arrive! :)
 

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Discussion Starter #7 (Edited)
Paul i found 2 links, one was on fuel pump, it moves according as you push the gaz, second link is on collector, as i understood it's the TPS link.

I think that this first link (which is on fuel pump) works too. i had disconected it but it had no result.
Tommorow i'll try second one and show the "specialist" (if can be called :angryfir: )
 

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The TPS (throttle Position Sensor) is on top of the injection pump. I will post some photos for you tomorrow and some resistance values for the TPS. I will also try to find the time to send you more diagnostic info (I will learn as well)....

What do you mean the "collector"? Can you post a photo?

What are you drinking on a Friday night? :naughty:
 

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Hi Twinotter600,
I am very interested to also see the TPS test procedure you will be sending. I would like to also test is my TPS is working properly. My patrol is a 1992 Granroad Safari VRGY60, A/T. I will post some learnings later. By the way, do you know what is the part number of the TPS?
Thanks, Ludwig
 

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Ludwig, I have not had the time to look this over last weekend. I can post a part number from one of my Safaris but the part number may be different for you. The TPS has different functions based on month year manufacture and transmission. Early 5 speeds do not have a TPS. In your case, I suspect your TPS is controlling your EGR as well as input signals to the AT computer. What makes you suspect your TPS?

I'll try to look at the TPS setup this week.
 

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Ok, I just has a go at the manual. The TPS is only described in the automatic section of theTB42 and references are obviously for 12 volt systems, petrol carbys.

One thing I have noticed on the automatic Safaris is a very large dropping resistor for the transmission.

1. dunno what this is for and never will
2. could this resistor be used to drop the voltage so 12 volt stuff is used?

TPS check and adjustment. The TPS is checked for resistance (0 ohms at idle) and voltage at the computer. Some of the references are below.

Ludwig, I could not find the TPS in my Nissan Fast. Nizzbits might but he would need the JDM discs.
 

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Below are pics of the TPS from my three different Safaris. Maybe someone else could post up what is on the Aussie or UK versions. Note the electrical unit to the rear of the TPS on the 91 5 speed TD42 capped green. It is not the fuel cut solenoid and when disconnected the engine starts but runs like crap with no power.
 

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Mine has the same set up as the first top image, with the 6-wire TPS. My Safari is an early 92 model. Before I suspect he TCU, I need to double check on the TPS first. Let me know if this is a logical route. I wanted to adjust the shift timing, from 2nd to 3rd. Currently it shifts to third at around 55+ kph. Sometimes it shifts at below 45kph. On a downhill, it shifts automatically to like 3rd or fourth when it reaches 60kph, but downshifts to 2nd when I start stepping on the pedal again.
 

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Ludwig, I am not spun up on trouble shooting the auto very well. Yes the TPS plays an important role, how much I am not sure. The revolution sensor plays a part as well.

Considering your symptoms, I would be checking the TPS.

Where are you?
 

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Sunroof? Rear beer cooler?

Philippines eh, nice and tropical unlike here.....

I seem to remember you posting about your auto.

I am from the Philippines sir. Your vehicle looks very much exactly like mine.
 

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No options like that. Just have a 60-liter Coleman icebox when the team goes on field. I have a small mineral exploration team and we do geology studies for mining companies. Yes I posted my problems with regards to my autobox before. Seems all sorts of problems are arising now. My wife says not to sell the Patrol because it had done good service to us the past 4 years. Im just fixing it so my kid can use it later.
 

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the solenoid i was reffering to is in the second photo beside the tps415kc2 under the wire gromet its at the pump return banjo manifold
 

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Hello,
Patrol 3. 0 zd30, 2005

Same problem:

When i select "D" (drive) postition, "2" or "1", car starts moving very slowly, it doesn't have power, when i push gas pedal it has no reaction, it still continious moving slowly.
when point approachs 2000 r/min then i feel a bit power.

What advice do you give me?


Thanks!
 
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