I had a leakage on my Auto gearbox sump or reservoir and the transmission oil dropped that much that i noticed my gear skipping while moving. I quickly toke it to technicain to fix it. After sealing the leaking point and he added some oil to it. While testing it, it started failing to change the gears automatically, Keep going to neutral while the dashboard gear indicator goes red. He said the firebody is faulty, please can u help me here. It moves but it goes neutral whenever it speeds to auto change to another gear.
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if its the zf auto box drain the fluid from the plug in the sump pan when empty refit plug remove level plug from rh side of gearbox. 8mm allen screw, yust above exhaust, refill with correct fluid through that hole,run engine get transmission oil temperature to between 50 - 70 degees C you need temp probe to do that or jag diagnostic gear or you can guess by feeling transmission sump pan. work the gearshift through all gears. then remove level plug allow to drain if level to high or top up if low, make sur you use the correct fluid, hope this helps
I take it you are talking auto transmission. Un do the drain plug in the box sump or if you do not have one remove the sump. replace filter in the sump . replace the sump with a new gasket and refill the sump. IF there is nothing wrong with the transmission and you only want to change the oil the best practice is to take it to a auto transmission shop where they can change the oil with the engine running and this changes the oil in the torque converter as well giving you a complete oil change. IT is more expensive as more oil is used but it changes all the oil and not just a part of the system. If your are talking manual, then remove the drain plug in the bottom of the gear box and when all the oil is out replace the plug tightly and remove the filler plug in the side of the box. Add oil until it runs out of the filler hole and when it stops replace the filler plug tightly. Use the correct grade of oils in both cases.
sounds like it is in get you home because of gearbox failure if its the early box with metal sump check selector cable adjustment it critical as the J gate micro switches and the linear switch on the side of the gearbox have to be in sync with each other. on the other hand if it is the later gearbox with plastic sump, which i suspect it will be, check it has not lost some of its oil due to leaking sump, common problem! other wise check fault codes in transmission control module, any codes relating to incorrect gear ratio means internal falure most times
Hi Louie, When the ATF smells burned it usually indicates a problem inside the gearbox. Let's hope not though. Drain the ATF oil and then drop the gearbox oil pan. Remove and replace the oil filter and the pan gasket and then refit it. Fill the box with the required amount of transmission fluid. Once filled, make sure the park brake is fully engaged and then check the ATF level with the engine running and the shift in neutral selected. It should be at the top of the lower marks on the transmission dip stick. If the problem persists, the gearbox needs major work or replacement. Regards John
If no external leak and the transmission fluid colour looks white, the problem belongs to the automatic gearbox oil cooler. The oil cooler has broke mixing the gearbox oil and coolant causing this milkshake. It's a small radiator core type oil / water heat exchanger. It is cracked inside and transmission oil is mixed with engine coolant. Because the transmission oil pressure is greater than engine coolant pressure, the transmission fluid level drops. See also the coolant colour inside recovery coolant reservoir inder bonnet! It could be like this:
The automatic gearbox oil cooler type oil / water heat exchanger (oil cooler):
In the picture above the transmission oil pan was removed for oil filter replacement.
Make sure you have sufficient gear oil (ATF) in the transmission, an Auto box uses oil pressure to shift gears. Often after the trasnsission has been removed and re fitted it will work out all the air within the first test drive thus the oil level drops too low to shift gears.
This is the sort of fault that is very difficult to diagnose from a post on here without my dirty hands under the bonnet ,but from the sound of it either you have the wrong oil in the auto gearbox like its been filld with manual gearbox oil or the brake bands and clutch are worn and the particles are in sump going around with the oil clogging up the gauze filter inside the box so drain the oil out and drop the sump of the gearbox then clean the filter and refill with new oil ATF type transmission oil and see what happens ,if it works of sorts but still playing up then trade car in quick