Question about 1997 Oldsmobile Eighty Eight

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Tranny shifting rough

From park to d or r , worse when engine is cold . usually gos back to normal after reaching operating temp, but not always whats wrong ?

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Check trans fluid with with warm engine and engine running

Posted on Dec 12, 2009

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1 Answer

Runs rough when cold


misfire cold.
ever tune it up. sparkplugs can fail when cold and rich conditions
are present(normal for cold)
ever seen the 60k service points lists it the glove box operating manual
id bet its due to not doing service.
am i right?
no engine size stated. so no details guessed.

Jan 11, 2014 | 1999 Toyota Camry

2 Answers

Rough shift while getting up at 55mph


with auto tranny, when you relieve the acc pressure on the tranny it will drop into a higher gear, this is normal but if your road speed is low and you put your foot down hard it may change back 3 gears, it decides what gear it requires in relation accelerator pressure and road speed, the tranny does have a switch near the selector, this lets every thing know what you want it to do, this is adjustable but can fail also

Jan 04, 2014 | Cars & Trucks

1 Answer

1995 jeep gr cherokee laredo jumps when first star in morning and runs rough when ac or heat on


my guess, car unseen.
car has an A/T trans, and all A/T jump from park to drive
selection is made on a cold engine, due to the very fast idle speed.
what was the park and cold idle speed. and out door temps.
the lower out door temps, make idle speed , cold engine, even higher
but when the engine reaches 180F or more and holds, the RPM
is about 800 RPM (the FSM tells the exact amount and does vary for the unstated engine option) so at 800 the tranny don;t lurch, did it on a hot engine. so if idle speeds are wrong say so and say it with engine temps. or its all meaningless.
next :
runs rough, the engine (even parked?) is called misfire.
misfire on a good engine (full compression)
is:
1: bad spark (or never had a tune up ever) every 60k miles.
2: bad fueling. too rich, too lean (low idle) bad injectors (stuck or clogged, or wrong fuel pump pressure or bad Fuel pressure regulator)
3: bad fuel.

there is a test for each possible failure. all very simple test.
it takes $80 in gauge tools to find engine problems.

Dec 30, 2013 | 1995 Jeep Cherokee

1 Answer

1993 jeep grand cherokee loses power at operating temp.


ever do a real tuneup this decade
spark parts, and filters. that be first
and make sure the hot engine (sized not stated) is really hot.
180F or more, and holds, it must reach normal spec, temp.
or the ECU brain will not do its job right.
the only clue I have here is skips
skips must mean misfire.
there are over 50 causes of misfire.
bad spark plugs tops the list.
and all spark parts there, cap/rotor,wires set this OLD.
car is old , needs a major tuneup

they to forget all that other stuff, and elaborage
what skips means.
i guess never cold does it skip.

taCH DROPS TO ZERO BUT engine not heard to stall?
if yes, electrical problems or CKP failing?
what does engine do when TACH does that, matters big time.

Mar 07, 2017 | 1993 Jeep Grand Cherokee

2 Answers

My 2004 Dodge Intrepid downshifts very hard when coming to the bottom of a hill. The transmission fluid/filter was just changed yesterday. Also, the fluid level on the dipstick appears between hot and cold...


Depending on the transmission type and what kind of "fluid change" you did, the capacity will vary,
6 to 9.3 quarts....Chrysler approved ATF+4 Fluid only, do not use Dex III fluid! A good diagnostic scan can determine your shift problems, and it can be repaired before more damge is done. Sounds like a shift solenoid is failing, which is an easy fix.

Good luck, i hope this helps.

Jul 01, 2011 | 2002 Dodge Intrepid

1 Answer

My 97 ford taurus transmission shifts fine but it will not go in to the over drive and the o,d light blinks off and on what do I do?


The OD light flashing is usually a sign the TC is overheating. I know it will come on when the ATX fluid hits 300F.

Coasting in neutral will cook a TC if done for very long. This is because the TC is spinning at a relatively higher engine speed but the tranny pump is not putting out enough fluid to keep it cool.

A locked TC is always better for the tranny and full power output. An unlocked TC is wasting energy churning up the fluid and causing a parasitic drag.

Once tranny fluid has reached this temp it is junk and should be changed. If you don't then it gets worse and worse and soon the tranny will fail.

Start with changing the filter and fluid and check for shifting issues after that. If it is shifting to O/D and clean, you have fixed the problem. If not, it could be a solenoid problem, a torque converter problem or worse. That is when your real work begins. Let's just hope the problem is the fluid is not flowing properly and the filter and fluid replacement fixes the problem.

In case of a problem or clarification or my solution was insufficient, don't hesitate to post me a reply.

If you are satisfied, rate my solution with the "thumbs" or (even better) add a testimonial.

Jun 05, 2011 | 1997 Ford Taurus

2 Answers

Engine idles rough for 90 seconds after restart when hot


sounds like the mass air flow sensor it is located on the air inlet try unplugging it and see if it runs better when it is running rough

Apr 09, 2009 | 1993 Ford Thunderbird

1 Answer

1991 Honda Accord tranny not shifting..


the first thing that needs to be checked is the fluid level. it may have a leak and has now gotten too low to move car. check the trans oil dipstick with vehicle running in park on flat ground. if it is low, top it off with dex lll trans oil and see if it moves better. if restored to normal shifting, ck for leakage. dont fix the leak first without checking for normal shifting down the road, you could be wasting time and money if any damage has occurred.

Nov 15, 2008 | 1991 Honda Accord

1 Answer

Transmission


Verify tranny fluid when engine has reached normal operating temperature. U know when u reach that temp when the coolant fans start.
Centuries have a weakness on the 2nd gear valve, but that doesn't seem to be ur case.
Check that and get back to me.

Aug 25, 2008 | 2003 Buick Century

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