Question about 1999 Pontiac Grand Prix

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Swifht into 1 2 with no problem but 3 4 i have being rpm up to get to go into gear

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Tcm may being going bad,does your engine light come on when this happens?

Posted on Dec 10, 2009

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Posted on Jan 02, 2017

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Jeep sluggish between 15-18 rpms during shifting from gear to gear. what is the problem


i cant get that slang, DIff , gears, clutch to jibe. 1990 wrangler YJ
what does DONE mean.?
front or rear diff axle new, new transmission? what?
1500 to 1800 rpm 15 is engine stalled, or rpm of oil tanker ship.

got a MANUAL stick or automatic slush pump gear box?
but is no way to answer. you.
its a hydromatic A/T. right>? AUTO?
if yes,it has.
no electronics then. so clean AFT/ levels per operators guide not guessing? hot?
stall test pass (ask)
line pressure tests pass
kick down cable not stuck
or if M/t do say so, mine is, 5 owned..

but we only have one word here, sluggish to work with,
so that can be :
1: engine weak? (low rpms in all gears, and low power)
2: Trans slips (or flares) High rpm and low power (slip)

which is it?, the rpm in each gear answers that.
the FSM shows the range of rpm for each gear. ever seen a real FSM book? factory service manual.


Feb 14, 2015 | 1990 Jeep Wrangler

1 Answer

I have a 95 silverado c1500 with 4l60e trans and it wont go into overdrive


overdrive is the fourth gear.D1,D2,D3,D4 now drive truck at 80 kmh
cruise at steady speed no fuel pedal movement, downshift from D4 to D3 you should feel RPM raise .. after push brake pedal a little you should see RPM raise 300 to 400 rpm.
shift pattern is 1st gear ,second gear,3rd gear and lock up(torque converter clutch). 4th gear with lock up
hope it helps

Mar 29, 2014 | 1995 Chevrolet C1500

1 Answer

700r4 transmission, my transmission is doing high rpm before shifting up from 1st gear, but with no slippage in any gear, rest of the upshifts are firm.BUT, on kickdown from 3 to 2.gear its going as i


I don't know if this will help,but i set my tranny up to shift hard like you are describing. Just by putting a clip on the kick down cable. The book talks about this, its cool if you like that sort of thing?

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/jeff_24365d731679262d

Jan 29, 2014 | Cars & Trucks

2 Answers

What is the overdrive used for


Overdrive is used for better fuel economy on the highway. You have different gear ratios for each gear, for example 1st would be 4.6:1, second 3.2:1 etc. this means for every 4.6 revolutions in, you have 1 revolution out (of you transmission). A overdrive gear will have a ratio of greater to 1:1 (i.e 1:1.6) mean the output is more than the input. This would give you a higher speed at a given RPM, or a lower RPm at a given speed, thus more fuel economy.

Feb 28, 2013 | 2006 Ford Escape

1 Answer

I have 2002 kia sedona and having problem with gear shifting it gets stuck in 1 gear i press on gas untill rpm reaches 4000 then change then goes to second gear in the moring does not do it but i feel...


there is something wrong with your SYNCRONIZER. it is a device located inside your transmission that is responsible for smooth gear shifting at any rpm's. i have not yet heard of syncronizer repair, so it possibly means that you just need to have it replaced. this is not a DIY job. have a transmission mechanic fix your problem

Aug 10, 2011 | 2002 Kia Sedona

1 Answer

Hi. I have an '82 F-150 with a 351 c.i. engine, the extended cab version with the full-length bed, 4WD, with only 20,000 miles on it. When I'm driving about 70 mph, the tachometer reads 3000 rpm, which...


Hi

It does look like you have a 3 speed C6, if the PRND21 description is correct. If you do have overdrive, the "D" will be printed in a white oval.

Sounds like it is OK. My Mustang has a 351C with a C6 trans, and 3000 rpm is about right at 70mph.

The defining factor on the rpm will be the Differential gears, which in a truck, might very well be taller gears instead of highway gears, as the taller gears provide more power output at the axles than the highway gears do.

Example:
if you had 3.0 to 1 gears (Highway), that means that the driveshaft will turn 3 times for every complete revolution of the rear wheels(Axle)

If you had 4.0 to 1 gears, then the driveshaft would turn 4 times for every revolution if the axle. Lots of torque for pulling stumps, but on the highway. the engine will have to turn more rpm's to maintain 70 mph vs a 3 to 1.

with the 3 to 1, you will turn less rpm's on the highway, but will have less available low speed power (Torque) at the wheels.

Sounds like the truck is doing fine.

Jun 04, 2010 | 1982 Ford F 150

1 Answer

2004 Mazda MPV, harsh automatic transmission at 2-3 gear


for better help with this go to mpvclub.com there are a great bunch of guys there, with ALOT of expertise.

Aug 14, 2009 | 2004 Mazda MPV

1 Answer

I got engine code PO700 and PO733 on my 06 charger


P0733-GEAR RATIO ERROR IN 3RD

Theory of Operation
The Transmission Control Module (TCM) constantly calculates the transmission ratio based on the input speed sensor 1 and 2 (N2-N3) signals and the calculated output shaft speed. The intent of this diagnostic is to detect if the transmission is slipping or an invalid gear ratio is present.
  • When Monitored: Engine RPM greater than 450 RPM , output speed greater than 180 RPM , no N2 - N3 input speed sensor errors present, no gear selector lever errors present, no ABS system errors, and all wheel speeds above 450 RPM .
  • Set Condition: No shifting operation and detected gear is not the actual gear. No shifting operation - detected (calculated) gear is less than actual (expected) gear, no plausible gear is calculated, actual turbine speed - calculated turbine speed is greater than 300 RPM or calculated transmission ratio is above threshold. During an Upshift detected (calculated) gear is less than actual (expected) gear. During Downshift - detected (calculated) gear is less than actual (expected) gear.
Possible Causes
  • LOW TRANSMISSION FLUID
  • OTHER TRANSMISSION DTC's PRESENT
  • INTERNAL TRANSMISSION FAILURE
Always perform the NAG1 Pre-Diagnostic Troubleshooting procedure before proceeding. See: Transmission Control Systems\Testing and Inspection\Procedures\NAG1 Automatic Transmission

Diagnostic Test
1. CHECK FOR OTHER TRANSMISSION DTC's
With the scan tool, check transmission DTC's
Are there any solenoid and/or solenoid supply voltage DTC's present?
YES >> Refer to the Transmission category and perform the appropriate symptom(s).
NO >> Go To 2 2. CHECK TRANSMISSION FLUID LEVEL
Check the transmission fluid level.
Is the fluid level correct?
YES >> Go To 3
NO >> Properly adjust the fluid level.
Perform NAG1 TRANSMISSION VERIFICATION TEST - VER 1. See: Verification Tests\Transmission Verification Test 3. CHECK IF DTC IS CURRENT
With the scan tool, record the Environmental Data and erase Transmission DTC's. NOTE: If the TCM detects and stores a DTC, the TCM also stores the vehicles operating conditions under which the DTC originally set and is located in scan tool under Environmental Data. Before erasing any stored DTC's, record any available data to assist in duplicating the conditions in which the DTC originally set.

Using the Environmental Data recorded earlier, test drive the vehicle while trying to duplicate the conditions in which the DTC originally set.
Did the DTC P0733-GEAR RATIO ERROR IN 3RD reset?
YES >> Repair internal transmission as necessary.
Perform NAG1 TRANSMISSION VERIFICATION TEST - VER 1. See: Verification Tests\Transmission Verification Test
NO >> Go To 4

4. INTERMITTENT WIRING AND CONNECTORS
The conditions necessary to set this DTC are not present at this time.
Using the schematics as a guide, inspect the wiring and connectors specific to this circuit.
Wiggle the wiring and connectors while checking for any possible open or shorted circuits.
Check for any Service Information Tune-ups or Technical Service Bulletins that may apply.
Were there any problems found?
YES >> Repair as necessary.Perform NAG1 TRANSMISSION VERIFICATION TEST - VER 1. See: Verification Tests\Transmission Verification Test
NO >> Test Complete.

Jun 04, 2009 | 2000 Dodge Durango

3 Answers

4000 rpm at 70 miles per hour


You should have another gear "5th" at 70mph your tacho should read about 2500 rpm.
Make sure you don't need to depress something or push the gear stick against a spring to select 5th.
Is there a gear layout on top of the gearstick knob, do you have 5th gear on there?
The highest gear ratio is a little over 1 to 1 so at 70 mph you would expect 3500 rpm, but, it is a little over 1 to 1 so it will be closer to 2500rpm.

Aug 18, 2008 | 2005 Volkswagen Jetta

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