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Where do I find the isolator valve on the TCM FG 20 forklift ?

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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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SOURCE: Red light in tcm forklift dasbord

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Posted on Jul 17, 2013


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Shift solenoid D location on Pontiac torrent 2006 PO982 code is shown

No shift solenoid D in your transmission .
DTC P0982 Shift Solenoid (SS) 4 Control Circuit Low Voltage
The 3-4, 4-5 shift solenoid (SS) valve (S4) controls transmission fluid pressure acting on the U1 shift valve to position the valve for the appropriate gear. The 3-4, 4-5 SS valve (S4) is a normally open exhaust valve located on the front control valve body. The solenoid is case grounded. The output driver module (ODM), within the transmission control module (TCM), commands the solenoid ON or OFF by providing voltage. When the 3-4, 4-5 SS valve (S4) is commanded ON, the TCM senses high voltage. When the 3-4, 4-5 SS valve (S4) is commanded OFF, the TCM senses low voltage.
If the TCM detects a continuous short to ground in the 3-4, 4-5 SS valve (S4) circuit, then DTC P0982 sets. DTC P0982 is a type A DTC.

Inside transmission .

Nov 13, 2017 | Pontiac Cars & Trucks


I get code P1775 and P0700


P1775 is the most relevant code. It means Solenoid valve latched in torque convertor.

P0700 is consequence of the P1775 code. P0700 means that there is an additional code stored in the TCM (transmission control module). The TCM stored code is probably related to the same problem. TCM codes can be pulled out at the car dealer or at an authorized garage. On this see: I get code p0700 after an OBDII scan.

P1775 is often coming with misfire codes.

P1775 means that the TCM detects that the solenoid valve located in the valve body (inside transmission pan under the filter) is not in the expected position (valve has two positions LR and TCC).
This cause rough shifting and driving problems.

Sometimes it is possible fixing the problem by resetting TCM and ECU. This is done disconneting battery cable (ensure you have anti-theft code if needed).

However, if a P1775 occurred, that means that there had been a solenoid valve malfunction, and problem must be fixed.

The first thing to do is replacing transmission fluid, and if needed also the filter. If the fluid level is poor, or if fluid is dark brown and satured with metal particles, that can cause solenoid valve malfunction.

If replacing the fluid does not help, then the most common problem causing the P1775 code is a defective solenoid in the solenoid pack.

Transmission shift solenoids are located in valve body, and they can be tested reading Ohms with a multimeter.

If that does not fix the problem (usually it does), the mechanic will proceed testing wiring to solenoid pack, TCM and solenoid valve, to find the reason of malfunction. Most common problems causing P1775 are related to tranny fluid and solenoid pack.

On automatic transmission problems see also: My car does not shift..


on Aug 17, 2010 | Chrysler Town and Country Cars & Trucks

1 Answer

TCM Forklift model FCG25-3L will not start when i turn the key to the on postion u can hear the fuel coming out of the intake

Danger of hydro-lock or fuel in crankcase condition will occur. Do not start! Fuel pump relay should be interlocked with oil pressure sending unit. Is it diesel or gas? Is it Carb or fuel injection? Investigate before running engine. Check oil dipstick for presence of fuel in oil. Fire hazard also exist .Be careful.

May 22, 2017 | Cars & Trucks

1 Answer

Does the dATSUN H 20 engine bend valves if the chain breaks, it was found in the forklifts of the 1980's

I'm not positive but I don't think any engine with a timing chain rather than a timing belt will bend valves if the chain breaks.

Jan 21, 2017 | Datsun Cars & Trucks

1 Answer

I have a TCM fg20 forklift that here lately seems like you have to give it more gas to move . It's propane powered. Any idea what to check ? Scott

all forklifts have an isolator valve in the drive system that stops the vehicle movement if the foot is on the brake
that area of control is where I would be looking at because if the valve is not allowed to neutralize properly then it stops movement or only allows partial movement

Dec 04, 2016 | Cars & Trucks

1 Answer

Need a service / maintenance manual please.

White Forklift - Cricket and Golf
White Mobilift Fork Lift Trucks MY 40, 50, 60, And 70 Operator's Manual ... White Forklift, MY-20, 25 and 30 Parts, Overhaul and Operators Manuals! $99.0.

Jul 26, 2015 | Cars & Trucks

3 Answers

What is means po961 exactly

PO961Is Pressure Control Solenoid A Control CKT Range/Perf.

Feb 25, 2015 | 2004 Chevrolet Monte Carlo

1 Answer

2004 jeep 42RLE transmission stuck in1st or 2nd gear

why say don't have.?
and is mandatory ,that you do. (hard cold facts.)
all autostores here, rent them or in most cases loan them.
Best is to have one in your tool box, before something messes up?
they sell em on fleabay for a whole $9 (USB type) any laptop.PC.

The CEL is on or D lamp or OD flashing is your clue to scan it.
why work blind?

the autostores do that , because the customer scans it, sees codes
and then buys a bunch of parts that are not bad on his car,
they get rich off this. (smart guys, huh?)

what a mech,does is read the code, then sees the FSM
it then tells the mech, which tests to do to isolate the real cause of the failure. there are like 10 tests on any one bad A./T
to find out if it can be fixed in car or out.
called on car tests.

here read the tranny pages, , its here

in your case this car is shifted electronically
by a device, called a TCM (tranny brain)
it does the shift commands, at ALL TIMES.
like all control brains, if the inputs are bad so will be the output)
so we check this first. as it is only a TCM and a hand full of inputs.
we check them, (after scanning not before)

sometimes the TCM is working but the valve body is bad
some mechs, will replace a bad solenoid in the valve body.
in some cases the whole valve body, $300 + part.
but in most cases if the TCM and inputs are good and the solenoids
are good, the tranny is replaced.
This is what the FSM coverers is how to do the test to prove all this out.

Feb 01, 2014 | 2004 Jeep Liberty

1 Answer

VALVE SETTINGS FOR KOMATSU 4D95 FORKLIFT that is one place where you can find the solution of your forklift truck problems.

Aug 21, 2013 | Cars & Trucks

1 Answer

Red light in tcm forklift dasbord

This is the car and truck section. Please post in correct category.

Jul 17, 2013 | Cars & Trucks

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