Venture :: Chugging Noise When Shifts From 1st To 2nd Gear - Code P0742
Sep 15, 2011
I have a 1999 Chevy Venture van with a 3.4l v6 in it, and am having a strange what seems to be either an electrical or transmission problem which I can explain pretty easily.
95% of the time after the van has been driven for 30 minutes and warmed up, I notice a strange chugging when it shifts from 1st to 2nd. The chugging gets less noticeable when it shifts into the higher gears. 2nd to 3rd, 3rd to 4th etc...
This is the strange part. If you put the vehicle in park and shut it off, and then restart it after it sits for 10 seconds or so the chugging is gone. It shifts beautifully. Could this be a problem with the computer or is it some kind of sensor resetting??
The computer is giving me a P0742 code. Which is "Torque Concerter Clutch Solenoid - Circuit Stuck on". I also have a code for the Mass Air Flow Sensor and Catalyst Efficiency which I think is related to other things.
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2000 Intrigue 144,000 miles.
When you first start it up, the vehicle won't move in any gear. After a while of idling, it may start to drive, but the engine RPMs are way too high for the corresponding speed that you're driving. 4000 RPMs to hold 45 MPH.
Could this be the input piston? I've heard those wear and then don't seal well, bleeding off fluid pressure. Torque converter?
Also, the one diagnostic code is P0742 - TCC stuck on. I realize that this could be unrelated to the vehicle not moving when cold.
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My girlfriend's 2001 cavalier has about 160k on it and about a week ago it started shifting harshly accelerating to highway speeds and the CEL came on along with the traction control/abs warning light. I pulled the OBD2 code and it was P0742, Torque Converter Clutch Circuit Stuck On. We took it to the transmission shop down the street the next day and they wanted $600 to diagnose. We called 'shenanigans' and decided she should take it to her regular shop. On the drive over the transmission shifted normally. Both shops noticed that the transmission cooler lines were rusty and seeping, but neither thought it was the cause of the problem. The shifting issue hasn't recurred even after a couple hundred miles during the week. She hasn't had the transmission fluid changed and doesn't know if it had been when she bought it about 80k miles ago. It seems to me that pre-emptively draining the fluid, changing the filter and refilling, especially to check for debris in the fluid, would make sense, especially if it was debris jamming the circuit that caused the error code in the first place.
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I had a small chirp noise in my Van when it shifts into 4th gear. Took it into United transmissions for a total rebuild. First rebuild had the same noise so they did it again and it came back with the same noise.at that point they said they don't know what it is. I can find no one in this state that will rebuild the Tranny.
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When the truck shifts into 5th gear i instantly feel a constant vibration and noise until it shifts to 6th gear. This happens nearly every time while driving at 40mph. Rpm range 1200 - 2000. I bought the truck new on June 30th and noticed the problem on my way to work on Monday July 2nd. Took it to the dealer on July 5th and the tech said it was the torque converter slipping. I drove it home because they didn't have time to work on it. Took it back on July 12th and the dealer has had it since (currently 30 days) They originally told me it was not the engine or transmission and it was an exhaust problem. Last week they said it was the motor mounts and said they would be done.
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My extremely used Explorer was driven off the lot, and ran like a champ for 3 months. One morning, I started it up, and noticed a chugging sound. While backing it out of the driveway, the truck felt like it was going to rattle apart. This was a sudden change. When I hit about 40mph, and I'm in 3rd gear, the truck hesitates and chugs along. If I stomp on the accelerator, the truck will kick into 2nd gear, and stops chuging for a second, then the gear changes back to 3rd and the hesitation starts again. If I disconnect the battery for a few minutes, then connect, I can drive normally for about 10 minutes, then back to the surging/hesitation. I've heard this might be a problem with the oxygen sensors or the mass air flow sensor.
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A friend called during the weekend, while driving on the vacation with the family the gear suddenly disengaged at cruising speed in a slight downhill. After that the transmission would not go into gear in any position. There were no slip, no noise, no visible oil leak nor other symptoms when this happened, just the gear disengaged. The van has now been towed to a local workshop for diagnose.
From what he described to me it seems similar to the thread , but it was never updated with information on what actually was the problem: [URL] ....
On my advise he checked fuse 31, which is feeding the solenoids in the transmission, but it was ok. Since there was no noise and it wasn't in a high torque situation I don't believe there has been a major mechanical failure, rather either loss of electrical power or hydraulic pressure. He have had the common hard shifting issue so maybe that solenoid gave up or the pump. He doesn't have any code reader so I don't know if any has been set.
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97 Venture, 4T60e trans, 197,000 mi. No shift or performance problems ever, solid as a rock. Well taken care of. Then a few months back it throws a P0758 code for Shift Solenoid B, and intermittently seems stuck in 3rd or 4th gear when starting from a stop. Wife drives w/ kids so immediately I park it to investigate and drive it myself and observe. Problem would happen usually after warming up and driving a couple miles, but would sometimes go away after shutting it off for a bit and going again.
After lots of research I decided it was probably a stuck solenoid and tried Sea Foam Trans Tune to see if it would clean it up, and it WORKED! For about 4 weeks that is, then came back. So I took the proper time and steps to replace both shift solenoids myself, and of course the fluid & filter (since you have to drain it to open the side cover anyway). My work is meticulous and clean, so I know nothing was done shoddy.
When removing shift solenoid A, however, a spring-loaded spool came partway out of that port in the valve body, didn't fall out, and I pushed it back in with the new solenoid. Everything else went back together flawlessly. On the first drive, it shifted to 1st as expected so all seemed well. Then after a several miles of driving I noticed something felt wrong - it was skipping 3rd gear altogether (1-2-4), and it would NOT downshift from 4th to 3rd. However if shifter was in "3" it would shift from 2nd to 3rd just fine, then I could put it in "D" and would hit 4th, but could only downshift to 3rd manually.
I am stumped, and it's been parked for months because something in the solenoid change has caused a major problem. I don't believe it could be mechanical gear/clutch failure as it shifts to 3rd w/ shifter in "3", and there was never a mechanical problem before. And it also still intermittently starts out in a high gear though quite seldom (3rd or 4th, not sure which but it barely moves) but putting shifter in "2" or "1" makes it start in 2nd. And never a SES light. Checked solenoid resistance at trans connector and they're perfect.
Tranny shop checked computer and said it's good, and also said "it's shifting just fine" which is absolutely not true. So much for a "free" diagnostic check... Could I have just gotten a bad solenoid? Could the spring-loaded spool that came part way out gotten hung up or the spring not reseated properly? Could it be the vacuum modulator (it got slightly bent upward when lowering engine)?
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1996 Mazda Protege, 133224 miles, mostly city driving, automatic transmission
This weekend the car started bucking, problems shifting into gear, chugging, slight odor of oil, very slow moving. This morning (in my pf's) I ran the Scan OBDII and there were no error messages. I checked fluids and they were fine.
Possible problems? I am at a decision point, get rid of the car (needs tires, front brakes and it burns a bit of oil each month (1-2 cups) or fix it.
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I have a 2007 F250 6.0 L with 116000 miles. I have never done any modifications or changed anything on the truck. Now that the weather is starting to warm up I've noticed that once the truck is at operating temperature it starts to chug and sometimes even die while driving and while its doing this the truck has no power. It does not seem to do it when its cold. Here is a picture of my gauges KOEO operating temp at idle...
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I am getting a single code - P0753 that comes on now and the van will not shit into 4th gear. It re-appears after clearing the check engine codes in 5 seconds. That seems to be the "A" or 1-2 shift soleniods (or wiring).
Can you get to the shift solenoids after dropping the transmission oil pan or do you have to pull off the side housing cover - that seems like a much more difficult job?
Of course, I will replace both of the solenoids if I can get to them. I will do it myself if I can get to them after dropping the pan but don't know if I will be able if that side cover has to come off.
What is the location and if I should be able to get that drivers side cover off if that is where they are?
I think the 1998 Venture's tranny is the 4T60-E.
I have a 1000+ mile road trip coming up soon so I got to get this fixed shortly. I guess I am glad this didn't happen in the middle of the trip though.
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Got my shifter in yesterday installed it today, had a few throwbacks but Jim was able to iron them out, except for one. I can go through all my gears, even reverse, but when I put it into "1st" it puts me in 3rd and it's sluggish taking off. I'm going to take it all apart tomorrow and try it again.
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When accelerating hard I seem to have to consiously let up on the gas prior to clutch actuation in order to avoid having the engine "overshoot" a couple hundred rpm between shifts. Is this normal for the 1.8t?
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I have a 2006 Elantra 4 cylinder with only 55,000 miles put on it.
Whenever I accelerate I hear this noise that sounds like a lawn lower under my hood, usually only there until around 45 MPH, then it dies down a bit. It as been getting louder and more....... screechy..... as of late.
Also, when idle, there is a sound that almost sounds like a metal grinding chugging noise. It comes and goes with no real rhythm or timing.
Additionally, there is a metal grinding noise coming from what seems to be my front right wheel area when I make wide right turns, as well as intermittently while driving regularly.
To my knowledge, neither of the motion noises seem to be happening above 45-55 MPH, or they are too soft to hear at those speeds.
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My Corolla started making a new noise recently. It only makes this noise when I'm moving/giving the car gas. The noise sounds like the noise from those safety strips on the side of the interstate but not quite as loud coming definitely from the front end, possibly isolated to the driver side. The faster I go the more apparent the noise is. It's not really a click noise it's more of a dull sound. It occurs at low speeds and high speeds, but not when idling. It's almost as though the engine is running hard but I'm not convinced it's originating from the engine.
The engine idles normally and I don't think there is anything wrong with the bearings or CV joints as I have replaced the left CV joint/axle and the right front bearing recently.
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So I sea foamed the passat vac/intake 2 days ago and car drove fine then did oil change 1 day ago 5/30 all I had with additive resline. Since then car revs then shifts into gear or stays in wrong gear until I rev the car. Never had problem shifting until now. Low oil pressure or electrical issue from sea foam vacuum leak.
2002 VW Passat 2.8 AWD
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Having a very pronounced hesitation/slip between 2nd and 3rd gear shifts. It happens in both "D" and "S" modes. I've had the tranny flashes and they fixed the throttle hesitation and the general harsh shifting. Still have a slip when going from 2nd to 3rd.
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I have a 1993 4WD Toyota extended cab pickup with 200,000 miles on it that is getting hard to shift into first gear. I have to double/triple clutch run through the gears to get it to shift into first. It is not hard to shift all the time but the issue is getting more and more frequent.
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A few days ago I changed the transmission fluid in my 03 jetta with an 02J. After this it felt nice for a day or two, but then it became very hard, and sometimes impossible to select 3rd and 5th gear. The other gears feel a little funny as well, but they are working fine. I used OEM VW/Audi fluid from German auto parts, and when I used the same stuff in my old GTI, it was great. Maybe a motor/trans mount got loose and its messing with the shifter cables? I really don't know what it can be, but it is very frustrating as this is my daily driver, and I am starting college on Tuesday, so I just need my car to work properly without a lot of downtime at this point.
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I've noticed that under mid-throttle condition, there is a jarring lag when the car shifts from 3rd to 4th gear Always exactly from 3rd to 4th gear.. no other gears. The car will literally lurch as if the gas is cut momentarily. If the pedal is mashed to the firewall (which.. it frequently is).. then it shifts fine.
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I have a 2002 Hyundai Sonata (automatic transmission) that has recently been "jumping" when the car shifts between 2nd and 3rd. This happens only after the engine is "warm", and does not happen in any other gears or when I downshift.
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