Ford Transmission :: C4 Drops From 3rd Into 2nd When Let Off The Gas
Dec 22, 2014
I have a 62 Econoline Pickup with 72' C4 transmission behind a 200 i6 engine. A normal driving speed (shifts up ok - 1st, 2nd, 3rd) when you let off the gas, it down shifts into 2nd gear (shouldn't it coast? ). When you accelerate it shifts back into 3rd. As you decelerate towards a stop it shifts from 2nd to 1st as it should. Supposedly the transmission was rebuilt within the past several years and not many miles since then. I have now was to substantiate this. What's causing this? Or am I looking at a worm out tyranny (time for a rebuild?)?
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Last weekend I had a DSG fluid change. Ever since then I hear a weird metal on metal clank when my transmission drops gears. It doesn't happen when its up shifting. Only down shifting. What could be going on? I am taking it back to the dealer next week but I am wondering if I should stop driving it immediately.
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I have about 600 miles on my new Camry. When I come to a stop at a stop light it seems when the transmission drops to first gear it drop kinda hard or more like a jerk. Is this normal or not?
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2000 Hyundai Sonata 2.4 L engine, transmission drops from 4th gear to 3rd gear at cruising speed (65mph) and locks into 3rd gear, I have to stop and turn the key off and start the engine again to reset the A/T what do you think is happening?
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I have a 2000 Lexus RX300 with 210,000 miles on it. We recently started to have some transmission issues. It sporadically drops into 1st gear while driving. We had the transmission fluid changed, and it did work for a short time, but it has recently started again. Is my transmission going to completely fail or is this something that is serviceable? We are trying to decide whether it's worth it to keep the car and fix it and drive it for another 100,000 miles or sell it. It looks great and drives great, otherwise.
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I have a 2010 Corolla S with automatic transmission. Today it started giving a push or a jerk when the 1st gear drops, so from 1st going to 2nd it pushes or jerks the car ahead. Not sure what is wrong with it, it has 56000 miles on it.
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Recently it feels like the transmission is 'hunting' drops a gear, picks up a gear when driving constant speed on flat roads. 2.0T with tiptronic. Additionally, very intermittent, the car will get a shimmy around 48-50 mph. feels more transmission related and it is not the tires since it is an intermittent issue.
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I have had several issues getting to where I am now. The Neutral safety switch (MLPS) is new. The tranny has been rebuilt with new TC installed as well. The truck shifts out fin 1-2-3-4 until I hit 57mph. At 57 the od drops out and will not reengage until I drop down below that speed. I ran a diagnostic test on the TPS with my multi-meter and it all was in range on the voltages and was smooth through throttle movement etc.
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I have a 2003 4.6l f150 164000 miles. While back oil pressure dropped to 0. Then chattering. Then up then down. I changed the oil and filter, then flushed the motor, then changed the oil and filter again. 1500 miles, no problems, no chatter. Then all of a sudden it happens again. Oil level good and clean. Oil pump?Pick up tube?
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Our summers typically hover in the 90's and the winters in the 40's. Each year we typically get a good cols snap and it drops in the teens at night and 20's-30's during the day.
Earlier this winter we had a week long episode of colder than normal weather which hung in the low 30's all day and teens at night.
The avg MPG's on my truck for mixed driving dropped from the 18+ that I normally enjoy to around 16.5. When the weather returned to normal for us, my MPG's returned to normal as well.
Have any of you noticed any serious climatic swings in your MPG's?
Yes, I know that vehicles normally burn more fuel in the winter but the info screen on my truck drives that point home.
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So my 99 F150 never got great MPG, but at least she was between 12 and 14 pretty consistently. However, she's spent a lot of time sitting, and now the MPG is right at 8. 9 or higher would be shocking. Any guess as to why this is? I know that engines need to be run now and again, but I can't beat 20+ MPG in my car and 40+ on my motorcycle, so she sits. I try to take her out once a month for a good drive to get everything heated up and moving and to burn any condensation that got in the oil. She's got fresh oil (not even 500 miles and 6 months), clean air filter, and fresh plugs and wires. I've also treated the gas with Sta-Bil at the proper mixture.
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I have an 01 F150 Lariat Supercrew 4x4 with the 5.4 Triton. The truck has 222,000 miles on it. Recently, I have noticed that when I am stopped at a stop light/stop sign while in gear, the oil pressure gauge drops to zero and the light comes on. As soon as I let off the brake and give it gas, it pops back up to normal. While driving, the needle never moves and stays consistent until I stop again, and back down to zero it goes.
If I put the truck in Park, the pressure goes back to normal. Same with neutral. It seems it is hit or miss and does not do this all the time, but I just wanted to see what your thoughts are. After doing some research I am leaning towards an oil pressure sensor/sending unit.... The truck runs perfectly fine, I just want to make sure it is not something more serious.
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Used to own a F250 so I am new to the F150. I am currently in a 2014 F150 fx4 with about 10k miles on it. I noticed when the truck is shifting into 3rd (normal acceleration)the rpms once in third remain around 1800 then drop to 1400ish after about 2 seconds or so while still in third (almost like its shifting again). What it is?
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I have a 2004 Explorer 4.0L v6 that I recently charged the AC in. The engine was rebuilt not to long ago so the AC was completely recovered (bought it from a friend), so I know I started fresh. I am not by any means a novice mechanic but, just dabbling into the AC world and have watched a ton of how to videos, and what not.
I went out and bought a set of manifold gauges as well as a vacuum pump. I do have the rear air on this one so it takes (correct me if im wrong) 56oz of refrigerant. I pulled a vacuum of 28 (mercury?) and it held it for a good hour so, I am pretty sure no leaks. I went ahead and charged the system... Compressor kicked on like normal, air got cold, and everything seemed to be going just like it should be. I went by just a random r134a ambient pressure chart NOT from ford.
I thought great this is going to be like new! Well, now the problem i'm having is in the mornings at say 65-85 degrees it blows ice cold. Once the sun gets higher in the sky, and it gets up to 95-100, it doesn't seem to be able to keep up, even driving for miles and miles. I noticed the rear air evaporater low side, doesn't seem to feel very cold either. Does this mean I might be over charged/under charged?
I have a video of the pressures at 2000 RPM, AC set to "max", both front and rear fans set to highest setting, windows down. At 31 seconds, the pressure drop is because I let off the throttle and let it idle for a bit, so you can see those pressures.
Copy of 04 explorer ac status - YouTube....
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1999 Ford E350 Triton V8 ... I'm having an issue with battery voltage, and it only happens once in a while.
Sometimes, while on the highway, my voltage will drop suddenly, the battery light flickers then after a couple seconds... ding! The voltmeter jumps back up to it's normal operating voltage.
It may only happen once, or maybe 3 times in a row, or never. I cannot get it to reproduce.
I had the battery checked, that's fine. I'm doubting the alternator is the issue. What other factors could I consider?
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I have 05 ford freestar 3.9.... The air works perfect until you put on max, then just slows down and sort of drops in temp, on a hot day feels almost humid. What is going on here... One guy said change cabin air filter i did and no change.
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I've got a '98 F150.throwing codd 402, excessive flow EGR, also the oil pressure drops to absolute zero only when gear shifts but comes right back up. No knocking or other distress sounds in engine. I know I'm in need of an oil change. I already searched a bit and decided to swap out the DPFE sensor which I did purchase from the dealership. No code as of yet but what could that pressure drop be? Could a simple il change and filter fix that?
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I have an 03 Explorer that had a starting issue. Long story short, it had no fuel pressure. So after testing the relay, I switched out the pump with an Airtex unit . All seemed fine...for a while.
Became hard to start again, checked Schrader valve with the key on, and not running, no pressure. Strange though, it would run.
So got the fuel pressure gauge on it. Turn the key and pressure will go to about 5-10psi and then drop to zero. Turn key off and on again, up to 5-10psi, then drop to zero. Turn the key to start and pressure goes up to 10psi, then starts, then goes to 30 while running and you can drive it around. Shut off motor and pressure goes down to zero.how the sending unit is supposed to hold fuel pressure and not release it? Is there some kind of check valve in the sending unit assembly that can be cleaned or does it need a whole sending unit with another pump? I already spent the $100 for the pump, and it is working if you can drive it!
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2004 Lariat. Ford F150, 5.4 Triton. Whenever I slow down, stop, or turn my truck will read low oil pressure, then all my gauges drops and it stalls out. I've taken it to my mechanic twice now. And twice he's replaced two sensors. Today I took it to Wal-Mart for an oil change and they said its probably why my check engine light is on code, T19. I've had that light on for 4 years now and this stalling out problem starts 3 months ago. So far its had regular oil changes, new air filter, two new sensors and im scraping money to throw at it. Hitting snow banks, other vehicles, and tree's... need to find the real problem before I go broke or worst kill someone in an accident.
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On my monitor, when I really get on it, I see the boost come up nicely and then when it gets to about 22 -23 lbs, it drops to zero on my monitor display, but the engine does not seem to falter in anyway. Why or what I might do about it?
I find it very annoying and do not believe it should be doing so, thus figure it might be causing some other problems or so. ..? I hear others talking about seeing 24 and up boost being displayed... why not me?
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This is the second time this has happened to me . Truck runs fine shut it off go to re start and it's a no start. I can watch the ficm volts drop to 0 from 48.5. Then it's 0 until it decides it gets power again?
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