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Transmission 4T40-E leaking at vented cap

Transmission shifting well , fluid smells normal from what oil remained in cap however transmission is dry. six months ago same problem , put new cap , thought that cured it. i even drove on highway and no leaks. now its happening all over again. apparently its caused by the transmission slipping and is in need of adjustment ,is that possible or could it be a plugged filter, i was told thats not possible. ?????

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Most likely a dirty filter. also the slip can be coming from the tranny being dry. my bro has a 94 camero put all new seals in and still leaks. sometimes transmissions malfunction and build too much pressure inside and need rebuilt

Posted on Jul 14, 2013

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SOURCE: transmission slipping and leaking fluid

wat is d name of d part between d axle and d transmission.its like a housing or something

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SOURCE: 2.3l ranger keeps overheating, been through two radiators already.

Hello Ranger Joe, eight months and two radiators is very uncommon. Question, Have you visually confirmed the leak in the radiators or is the leak near the hose connections? Replacing the radiator, cap, water pump, & the thermostat leaves only two others, the hoses and the engine block/heads. Far fitched will be something or somebody poking holes in the radiator.

Posted on Nov 07, 2008

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2005 chevy malibu damage Light front end damcodend error codes P0401 P0605 P0842 P0642 The 0401 code is being thrown twice and I belive it is the egr wich is common on these cars from what my buddy tells...


DTC P0401 Exhaust Gas Recirculation (EGR) Flow Insufficient
Probably plugged passage's , not the EGR valve .
What type code reader are you using to read these codes ? I have factory service info. Doesn't show P0842 or P0642 , no such codes . You don't show what engine yours has , I'am assuming you have 3.5 L !
P0604
Control Module Random Access Memory (RAM)
PCM
DTC P0601, P0602, P0603, P0604, P0605, P0606, P0607, P1600, P1621, P1627, P1680, P1681, P1683, or P2610 in Engine Controls - 2.2L (L61)
or
DTC P0601, P0602, P0603, P0604, P0605, P0606, P0607, P1600, P1621, P1627, P1680, P1681, P1683, or P2610 in Engine Controls - 3.5L (LX9)

P0717
Input Speed Sensor Circuit Low Voltage
PCM
DTC P0717 in Automatic Transaxle - 4T40-E/4T45-E
P0741
Torque Converter Clutch (TCC) System - Stuck Off
PCM
DTC P0741 in Automatic Transaxle - 4T40-E/4T45-E
P0742
Torque Converter Clutch (TCC) System - Stuck On
PCM
DTC P0742 in Automatic Transmission - 4T40-E/4T45-E
P0748
Pressure Control (PC) Solenoid Control Circuit
PCM
DTC P0748 in Automatic Transmission - 4T40-E/4T45-E
P0751
1-2 Shift Solenoid (SS) Valve Performance - No First or Fourth Gear
PCM
DTC P0751 in Automatic Transmission - 4T40-E/4T45-E
P0752
1-2 Shift Solenoid (SS) Valve Performance - No Second or Third Gear
PCM
DTC P0752 in Automatic Transmission - 4T40-E/4T45-E
P0753
1-2 Shift Solenoid (SS) Control Circuit
PCM
DTC P0753 in Automatic Transmission - 4T40-E/4T45-E
P0756
2-3 Shift Solenoid (SS) Valve Performance - No First or Second Gear
PCM
DTC P0756 in Automatic Transmission - 4T40-E/4T45-E
P0757
2-3 Shift Solenoid (SS) Valve Performance - No Third or Fourth Gear
PCM
DTC P0757 in Automatic Transmission - 4T40-E/4T45-E
P0758
2-3 Shift Solenoid (SS) Control Circuit
PCM
DTC P0758 in Automatic Transmission - 4T40-E/4T45-E
P0815
Upshift Switch Circuit
PCM
DTC P0815 in Automatic Transmission - 4T40-E/4T45-E
P0816
Downshift Switch Circuit
PCM
DTC P0816 in Automatic Transmission - 4T40-E/4T45-E
P0826
Up and Down Shift Switch Circuit
PCM
DTC P0826 in Automatic Transmission - 4T40-E/4T45-E
P0973
1-2 Shift Solenoid (SS) Control Circuit Low Voltage
PCM
DTC P0973 in Automatic Transmission - 4T40-E/4T45-E
P0974
1-2 Shift Solenoid (SS) Control Circuit High Voltage
PCM
DTC P0974 in Automatic Transmission - 4T40-E/4T45-E
P0976
2-3 Shift Solenoid (SS) Control Circuit Low Voltage
PCM
DTC P0976 in Automatic Transmission - 4T40-E/4T45-E
P0977
2-3 Shift Solenoid (SS) Control Circuit High Voltage
PCM
DTC P0977 in Automatic Transmission - 4T40-E/4T45-E

Sometimes with code readers they get confused an just throw any old codes . Have it checked by someone with GM Tech 2 scan tool .

Aug 03, 2017 | Chevrolet Malibu Cars & Trucks

1 Answer

2002 pontiac sunfire 4T40-E transmission vented cap leaking


fluid level too high transmission over filled.could have plugged drain back holes on the drive sprocket support.

Jul 14, 2013 | Cars & Trucks

1 Answer

Theres a smell of gear oil in the cab when driving.What could it be?


(1) motor oil only smells when its being burned.
(2) the output of the air ducts is in front of the gear shift area.
So, I'm thinking that you have an oil leak in the engine compartment (which may be dripping onto the exhaust system), and the oil has found a hot part of the engine/exhaust, and the smell of heated oil is wafting through the cabin air filter into the passenger compartment through the air ducts in the middle of the dash to just above the gear shift area.
If my theory is correct, you should be able to re-route the burned oil odor by changing the setting of your air ducts by changing the setting from its current setting to a "defrost-type" setting, wherein air entering the passenger compartment comes from the ducts below the windshield, rather then entering through the openings at the center of the console.
Ultimately, your fix will be to locate and resolve the oil leak.

Here's your list of possible culprits for the 1997 Nissan Pathfinder

Priority Action Part Type Cause
1 Inspect - Valve Cover Gasket -- Valve Cover Gasket Leaking Oil.
2 Inspect - Oil Filler Cap -- Oil Filler Cap Damaged or Missing.
3 Inspect - PCV Valve -- Plugged or Damaged PCV Valve.
4 Inspect - Oil Pan Gasket -- Leaking Oil Pan Gasket.
5 Inspect - Head Gasket -- Leaking Head Gasket.
6 Inspect - Oil Pump - divided O-ring or Oil Pump Gasket

If the odor really is gear oil (aka transmission fluid) and not motor oil, then there's a leak coming from the automatic transmission/manual transaxle.
Look under the transmission after the car has been parked awhile, and look for a reddish oil spot/blot/pool. transmission fluid is dyed red just for the purpose of differentiation from other automotive lubricants. You can assist the process of color differentiation by putting newspaper under the vehicle once it's been parked for the night.
Placing enough newspaper may also keep your Pathfinder from depositing a nearly-impossible-to-remove oil stain onto your garage floor overnight.
If you already have an oil stain on the floor, try a spray can of engine degreaser first. Citrus degreaser next.

Oct 20, 2011 | 1997 Nissan Pathfinder

2 Answers

I cant check fluid in transmission no dipstick


THE 4T40 E 4T45 E AND 4T65 E THESE TRANSMISSIONS DONT HAVE A FILL TUBE WITH DIP STICK.THOSE TRANSMISSION VECHICLE HAS TO BE PUT ON A LIFT AND LEVEL. TRANSMISSION HAS A FLUID CHECK PLUG LOWER HOUSING TRANSMISSION JUST ABOVE THE OIL DRAIN PLUG.TO CHECK FLUID TRANSMISSION NEED TO BE OPERATING TEMPERATURE. WITH ENGINE RUNNING AND TRANSMISSION FLUID PLUG REMOVE IF TRANSMISSION FLUID POURS OUT. CHECK PLUG HOLE.YOU HAVE TOO MUCH TRANSMISSION FLUID IN TRANSMISSION.IF FLUID DONT DRIP OUT HOLE NEED TO ADD A PINT AT A TIME.IF FLUID DRIPS OUT SLOWLY FLUID CORRECT TO POUR TRANSMISSION IN TRANSMISSION RAISE HOOD LOOK ON TOP TRANSMISSION ON DRIVER SIDE FOR A RED VENT FILL PLUG.REMOVE PLUG USING A LONG LONG FUNNEL POUR TRANSMISSION FLUID IN THE VENT FILL PLUG HOLE.THIS VECHICLE THE DEALERSHIP HAS TO CHECK FLUID USING A LIFT.YOU CAN DO THIS JOB BUT IT WILL VERY DANGEROUS YOU CAN PUT CAR ON JACK STANDS WITH VECHICLE SITTING LEVEL. BUT THE DANGER PART COMES YOU HAVE TO SLIDE UNDER THE CAR WHILE ENGINE RUNNING TO CHECK FLUID.IF YOU DO THIS JOB HAVE FRIEND OR HELPER AROUND DONT WORK UNDER CAR BY YOUR SELF ALWAYS KEEP CELLUAR PHONE ON HAND FOR EMERGENCY.

Aug 11, 2011 | Chevrolet Cavalier Cars & Trucks

1 Answer

I have no gears forward or reverse. My Vehicle is a 2003 Dodge Ram 1500 4x4 Hemi with 170,000 on the clock. Fluid is clean and full with no leaks. I have the following trouble codes:...


Your scanner will give you the code but it will not tell you how to fix your vehicle. Scanners basically tell you what systems to check or what systems are failing.

These are what your codes mean:

P0700: Transmission Control Module
- Shorted or open circuit within transmission control module (TCM)
- Failure of transaxle control module. This is just a informative code.

P0734: Gear ratio error in 4th gear
- Low transmission fluid level
- Dirty transmission fluid
- Shift solenoids
- Transmission mechanical problems
- Transmission hydraulic control circuit

P0732: Gear ratio error in 2nd gear
- Low transmission fluid level
- Dirty transmission fluid
- Shift solenoids
- Transmission mechanical problems
- Transmission hydraulic control circuit

P0731: Gear ratio error in 1st gear
- Low transmission fluid level
- Dirty transmission fluid
- Shift solenoids
- Transmission mechanical problems
- Transmission hydraulic control circuit

P0871: Transmission Fluid Pressure Sensor Switch C

P0876: Transmission Fluid Pressure Sensor Switch D

Emissions Codes:

P0400: Exhaust Gas Recirculation Flow Malfunction
- Harness or connectors (EGR volume control valve circuit is open or shorted.)
- EGR volume control valve stuck closed
- EGR volume control solenoid valve
- Dead (Weak) battery
- EGR temperature sensor and circuit
- EGR Valve

How to fix :
- Clean EGR Valve
- Repair EGR harness or connector
- Replaced EGR volume control solenoid valve
- Replaced EGR volume control valve

P0440: EVAP Emission Control System Malfunction
- Missing Fuel cap
- Incorrect fuel filler cap used
- Fuel filler cap remains open or fails to close
- Foreign matter caught in fuel filler cap
- Incorrect fuel tank vacuum relief valve

How to fix:
- Retight or replaced fuel tank filler cap
- Replaced damage or leaking EVAP canister

P0456: EVAP Control System Leak Detected (Very Small Leak)
- Missing Fuel cap
- Incorrect fuel filler cap used
- Fuel filler cap remains open or fails to close
- Foreign matter caught in fuel filler cap
- Incorrect fuel tank vacuum relief valve

How to fix:
- Retight or replaced fuel tank filler cap
- Replaced damage or leaking EVAP canister

P0441: EVAP Emission Control System Incorrect Purge
- Missing Fuel cap
- Incorrect fuel filler cap used
- Fuel filler cap remains open or fails to close
- Foreign matter caught in fuel filler cap
- Incorrect fuel tank vacuum relief valve

How to fix:
- Retight or replaced fuel tank filler cap
- Replaced damage or leaking EVAP canister

Based on the info check your EVAP system. I would check for leaks and maybe replace the EGR and the canister.

For the transmission check the TCM also you may need to take it to a mechanic though.

Hope this helps a little.

- Tech 101 (ASE CERTIFIED MASTER TECHNICIAN)
- Larson's Mobile Auto Repair
- 209-845-7620
- Oakdale, CA

Dec 31, 2010 | Dodge Pickup Cars & Trucks

1 Answer

What kind of auto trans fluid


The 2003 Sunfire has been updated from Dexron II or III to Dexron VI per a Technical Service Bulletin from GM.

Automatic Transmission, 4T40-E Initial Fill..........6.5 liters
Automatic Transmission, Total Fill 4 speed 4T40-E..........12.2 liters


Good luck and hope this helps, if you do use Synthetic transmission oil, make sure it's a Low Viscosity Synthetic Transmission oil. High viscosity transmission oil will cause the gear shifting to stick and will cause shifting issues.

Thank you for using fixya and good luck.

Nov 17, 2010 | 2003 Pontiac Sunfire

2 Answers

Where is the dip stick for transmission oil


Looking at the motor from the front, in the middle all the way to the back, near the windshild. It has a red o-ring handle. Three speed 3T40 transaxles (2.2L only) will have a dipstick, whereas the four speed 4T40-E (2.2L or 2.4L) will not have a dipstick. The 4T40-E has an oil check plug located above the pan in the center of the torque converter side of the transaxle; it is recommended to check fluid only when a leak has occured.

Good job.

Mar 06, 2010 | 2000 Pontiac Sunfire

3 Answers

ATF Fluid Capacity for 2001 Alero


2001 OLDSMOBILE ALERO 3.4L 6-cyl Engine Code [E]
2001 OLDSMOBILE ALERO 2.4L 4-cyl Engine Code [T]

Automatic Transmission,4T45-E......AF6
Automatic Transmission,4T40-E......AF6
Use Low Viscosity ATF, Hight Viscosity ATF or additives create fluid retention which cause the servos, solenoids to seize up causing shifting problems.

CAPACITIES:
Automatic Transmission, 4T45-E Initial Fill..........6.5 liters
Automatic Transmission, 4T40-E Initial Fill..........6.5 liters
Automatic Transmission, Total Fill
4 speed 4T45-E..........12.2 liters
4 speed 4T40-E..........12.2 liters


Good luck and hope this helps.

Dec 30, 2009 | 2001 Oldsmobile Alero

1 Answer

Why wont my transmision shift


Have you checked your transmission fluid lately?
More often then not that is the cause of shifting problems. Normally this happens gradually which is to be expected since transmission leaks are usually slow. The first signs are a slight hesitation when the car is first started in the morning and put in reverse. The the car seems to lag just a bit before moving back. This increases as more fluid is lost.
Another cause is from the transmission not being properly serviced. Leave the tranny fluid in to long and it becomes burnt. At this point it the viscosity is more like cooking oil instead of transmission fluid.

Most people neglect this item because of a lack of understanding about the transmission system. As opposed to the engine that everyone knows NO Oil =No Car. Although the service interval is greater when compared to the engine oil it needs to be taken care of to prevent "No Car" also.

Check your tranny fluid. Open the hood and located the tranny fluid dip stick. Usually along the firewall. Read what it says because normally the car needs to be running and in neutral to get an accurate reading.

Also look and smell the oil on the stick. If it's brown and/or it smells like it's burnt have the tranny serviced. This involves draining the fluid, replacing the filter and new fluid.


I hope this helps and good luck.

Nov 20, 2009 | 1993 Chevrolet Lumina

2 Answers

Transmission shifts hard sometimes


has the filter been changed burning is not a good sign

Oct 10, 2009 | 2001 Buick LeSabre

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