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Isuzu bighorn no shifting when the engine becomes hot what is the problem?

Why does isuzu bighorn no shift when the engine becomes hot, but when the temperature is cold we have no problem in shifting.

Posted by Anonymous on

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2 Answers

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  • Isuzu Master
  • 20,706 Answers

Old post, ill add real
better, a real answer, not ****** spam
automatic trans
cold ATF fluid is thicker cold and thin hot.
the hot oil finds leaks in the trans seals and it fails.
what does no shifting mean
Drive dead.
Reverse dead
or will no auto up shift, 1,2,3,4......?
my guess is it fails the stall test< slips in drive.
step on gas, and RPM goes wild fast RPM
that is called slip. and is stall test failure covered in your FSM book.
it the tells you to do the line press test next.
gage and fittings on side of box
if that fails trans is bad.
takes 30min work to do,
if it does drive in 1st gear, then that is another answer
be clear and get 10x better answers

Posted on Oct 24, 2016

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jamessizer

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  • Isuzu Master
  • 7,515 Answers

I, feel sorry for you, after reading your problem, but don't worry you visit the Reliable-Store they will help you for sure.
Isuzu Trooper

Posted on Oct 04, 2016

  • Anonymous Oct 24, 2016

    why spam relic post.

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2 Related Answers

Fabrice Wolters

  • 331 Answers

SOURCE: Isuzu bighorn automatic transmission slips after heating

Change your gearbox oil, and clean out the oil strainer.
Should help.

( On some models, you have to remove the gearbox oil pan to clean the strainer )

Posted on Nov 01, 2009

Jonah Oneal

  • 14092 Answers

SOURCE: my 1995 isuzu bighorn need

THERMOSTAT STAYING OPEN CAUSE PCM STAY IN OPEN LOOP WHICH WILL CASE ENGINE RUN POORLY TRANSMISSION SHIFTING LATE.REPLACE THERMOSTAT SEE IF IT HELPS PROBLEM.

Posted on Aug 09, 2011

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1 Answer

Isuzu bighorn first gear good also the reverse gear but can't shift


hi paula
what year?
what country?
what model bighorn, bighorns vary by country.?
what engine?
what transmission , auto or stick shift?

the word gear , is no clue.
if not sure, send photo of truck then of the shifter

sounds like car needs service, no?

Feb 12, 2016 | Isuzu Cars & Trucks

1 Answer

Why isuzu bighorn automatic transmission 4jg2 engine no shifting when engine is hot what is the trouble?


Have you checked the trans oil level correctly when hot? If its OK then you need a trans specialist to carry out various tests with gauges etc

Jun 23, 2014 | Isuzu Trooper Cars & Trucks

2 Answers

Car won't up shift or down shift at hot temperature


your tranny shifts according to pressure the transmission control unit regulates the pressure to provide smooth shifts you need to take the car to a good tranny shop that has a scanner that can check the shift points

Mar 23, 2014 | 1996 Honda Civic

1 Answer

Isuzu trooper bighorn find PCM


As in lobotomized, heh heh? That sounds like more reverse-engineering than the makers would put up with. Look under the dash, both sides. I really don't know, surprising if it has no modern electronics.

Nov 24, 2012 | 1992 Isuzu Trooper

1 Answer

My 1995 isuzu bighorn need hard to shift into 2nd gear if the engine is not in peak temperature. I need to step the accelerator up to 2000 rpm before it shift to 2nd gear, but if the temperature goes up...


THERMOSTAT STAYING OPEN CAUSE PCM STAY IN OPEN LOOP WHICH WILL CASE ENGINE RUN POORLY TRANSMISSION SHIFTING LATE.REPLACE THERMOSTAT SEE IF IT HELPS PROBLEM.

Aug 09, 2011 | Isuzu Trooper Cars & Trucks

5 Answers

Isuzu bighorn automatic transmission slips after heating


Change your gearbox oil, and clean out the oil strainer.
Should help.

( On some models, you have to remove the gearbox oil pan to clean the strainer )

Nov 01, 2009 | 1994 Isuzu Trooper

1 Answer

92 Honda Accord, 5 speed, hard shifting into first & second gear.


First thing to do,try to pump your clutch before you shift into 1st gear then if you feel makes better, most probably you have problem with your hydraulic clutch system, check the clutch line if there is an evidence of fluid leaking or it could be internal leak.

Second thing to do, check your transmission oil, may be it' s too old or you use a thick oil thats why when cold its hard to shift then when the engine rich the normal temperature(warm) the oil become thin and the shifting will smooth. Remember the very old oil become thicken and the purity is gone and can cause of hard shifting. in this regards i suggest you to change the transmission oil and check the used oil if there is small peace of metals, then you are in big trouble,

Mar 08, 2009 | 1994 Honda Accord

1 Answer

Bighorn Trans


The Bighorn auto tran smission is a special transmission with a snow or uphill assist function. When you use this function it will definitely go fast into Overdrive when shifted upwards.

Willy Baguio City
92 Irmsher 3.1

Oct 16, 2008 | 1998 Isuzu Trooper

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