I have a stumbling engine when my chevy shifts into over drive. I have new plugs wires dist rotor coil ign module fuel filter air filter. Checked timing with auto advance unplugged and it is not @ TDC but about 4 deg advanced. It is also not consistent in its stumble.
View 19 RepliesI just bought this 2001 Mercury Grand Marquis with 87k on it. It runs and idles smoothly, good gas mileage, no sign of trouble--except a cold start. It actually starts fine, but when I shift into drive the engine dies. If its 0, it just dies. If I idle it a minute or two, it will do OK. At 20 degrees, it slows like its going to die, but then recovers. Once I have it running in drive (or reverse) it behaves completely normally. Since this thing is presumably computer controlled with no adjustments, I am puzzled. The only clue is that this was an estate-probated car, and probably sat around for 6 months or so. I had no clue on purchase--probably because the seller warmed it up before I got there to try it out.
View 9 RepliesToday I parked my 2014 Toyota Corolla while the shift was in drive and I turned off my engine. I let go of the brakes and it began to move backwards. I then realized what happened and shifted to Park and took out the keys and turned the engine back on to park it correctly. The on screen display seemed to restart or something when I did so. Will this hurt my vehicle? It is a CVT transmission by the way.
View 19 RepliesI have a 1997 Nissan Altima that I just barely got and it has started to show signs of trouble.
Sometimes when I put the vehicle into drive and step on the gas the car will not move and instead the engine will rev.I'll put the car back into park and then into drive and it'll work fine.
I checked the ATF, which was incredibly low and refilled it. The engine oil was also very low, which was refilled. The problem still persists. So I decided to add a bottle of Fuel Injector Cleaner to the gas tank.
I took the car for a short drive and nothing happened aside from the fact that the Check Engine light now comes on and off. The car also idles between 1000-1500 rpms.
I have a 1997 chevy s10. Speedometer stopped working..abs lights come on once in awhile and wont shift into other gears. I have replace speed sensor, computer, wheel sensor and ignition switch assembly.
View 7 RepliesI have a 2001 chevy cavalier, the base 2.2 model with a 5 speed manual transmission.
I can't shift into 1st, 3rd, or 5th gear. On occasion I can get into 1st but it pops out almost instantly. I have the shift boot up, it looks like the shifter won't go far enough to click into gear for the top 3 gears.
2nd and 4th don't have any issues, reverse works as well though can sometimes be more difficult than usual.
I have a 2002 chevy Trailblazer that when you put it into drive there is a vibration.It does not do this in park or neutral. I have checked the engine mounts and transmission mount, and they look good. The vehicle has a little over 118,000 miles on it and the engine runs and drives great except for this vibration that i do not know where it id coming from. What may be my problem?
View 1 RepliesI have a 1993 Chevy Silverado, 350, 2WD. It has a 4L60E transmission. I just started having a problem shifting from 1st to 2nd. When accelerating the RPM's go way up and won't shift until I let off the throttle. Then it shifts into all other gears normally.
If I accelerate slowly. it will shift into 2nd at about 16 MPH. It will then shift into all other gears normally. I have replaced the Throttle Position Sensor, flushed the transmission and replaced the filter and fluid. This made know change in performance.
I am now suspecting that it might be the 1-2 shift solenoid. The check engine light is not on and everything else works fine.
I have a 98 Chevy truck with a 4L60E. It has no second gear. I was sitting in park for about 10 minutes with the engine running, then put it in drive and it never shifted into second. It felt like it went straight to 3rd. I played with it manually until I figured out I had reverse, 1st, 3rd, 4th and torque converter lockup, just no second gear. My acceleration rate was medium and when I reach about 27-28 mph it would shift from 1st into 3rd. It has 230K on it so I rebuilt it with all the typical parts - frictions, steels, band, sun shell etc., still no second. I then pulled the pan back off and replaced the spacer plate and put in a shift kit. While I had it down I put a corvette servo in and did an air check. It worked fine. I could feel the band tighten.
Both the 1-2 and 2-3 solenoids checked good at 23 ohms. I swapped their positions to see if it would make a difference. I also checked to make sure the 1-2 accumulator piston wasn't stuck in its bore, the spring was new from the shift kit. It was fine. Put it back together...still no second gear. When I originally pulled the pan off for the rebuild, the pan was free of any debris and was very clean. I then drove it a couple of miles to a local transmission shop. They put their scan tool on it and drove it around the block. There were no codes and the ECM was calling for second gear. It doesn't sound mechanical since almost all the parts have been replaced, rebuilt or inspected that affect the 1-2 shift. It sounds electrical. Is there anything I have missed?
I have a 2011 Chevy Malibu, with a little over 100k miles on it. A couple weeks ago it started acting a little funny when I would shift into reverse after starting it after sitting for a while. I thought it might have been due to temperature as it didn't do it after the car had warmed up or when it was warmer out.
Yesterday it started acting up really bad, will not shift out of first gear, and will not shift into reverse, and the check engine light came on. I was able to get it up to O'Reilly's to get the codes. It came back with 2 separate codes.
P0700 - Transmission Control Module (TCM) Requested MIL IlluminationP0776 - Clutch Pressure Control (PC) Solenoid - Stuck Off
The guy there seemed to think that the second code was probably caused by the first one, and most likely the TCM needs replaced. It makes sense to me, but before I head down this path I want to get some input, as it is a little over $300 for the part.
My dad's 1996 Chevy Silverado will not shift into hi gear. The truck starts up fine and he can drive it but for some reason it won't shift into hi gear. Him and I are clueless as to why it won't. He has a 1996 Chevy Silverado, 6.5 liter V-8 automatic transmission, and its a diesel. We really want to fix the truck ourselves so we are trying to avoid taking it to a shop.
View 2 RepliesWhy does my 2000 chevy impala whistle when i accelerate? it also seems to shift hard.
View 10 RepliesI have a 2007 Chevy Malibu with around 190000 miles on it. Recently, first thing in the morning then I start driving, that car will not shift into 2nd gear for a bit. The engine will rev up the 2000 RPM and stay there. After a while it will finally shift. The fact that the engine stays revved that high for that long makes me nervous.
View 9 RepliesI have a 1991 gmc 1/2 ton with 200K on it. Its a 350 engine. The engine has been stumbling for a long time. I've tried many things ...new fuel pump and filter...complete tune up.....checked all vacuum lines..replaced a couple lines...EGR valve.....changed head gasket and intake gasket. Checked the warm up flap inside the air cleaner. I am now very very frustrated.
This stumbling happens often but intermittent also....sometimes worse than other times like the truck is about to stall. The truck seems like its being held back like a loss of power. The truck will begin to stumble so i will pull over and rev it up and it seems to clear itself for a short while then right back to stumbling.
Upon warmup in the morning she seems to run fine until hot. No codes being thrown ...service engine light NOT on. Even while at a stop i will hold the throttle part way and revs at different rpms. I am now at a loss and feel defeated.
I am trying to get some advice on a diagnosis for a transmission problem i'm experiencing with my vehicle? It's a manual transmission and the sound i am hearing is when i shift gears is a loud whirling grinding sound. It's really loud in 2nd 3rd and 5th and doesn't stop.
View 1 RepliesMy 3.5 intrigue seems to stumble while driving it. It feels as it the engine is stumbling or loses power for less than a second and it will do this a few times in a row and will be fine for awhile and then repeat itself.
This can happen while cruising, slow acceleration or at a stop light. I don't really notice it under harder acceleration. When it does happen i do notice that the rpm's drop a very slight bit.
The issue: Check engine light on. Codes pulled, and he's getting O2 sensor codes (aftermarket exhaust has caused that since he bought the car) and 17705 Pressure Drop Between Turbo and Throttle Valve. The car barely accelerates, and you can hear the turbo spooling, and the engine has small surges. I had VCDS going and went for a drive and noticed his N75 Valve duty cycle was stuck at 5.1% no matter what throttle position he was in. So we're going to the wreckers this afternoon and will pull an N75 valve? The DV is stock and appears to be in good condition, but if changing the N75 doesn't work then that's the next spot I'll look.
View 7 RepliesAbout two weeks ago i had a ton of work done to my W100: clutch, freeze plugs, valve seals, body mount bushing, headers, x-pipe dual exhaust. The shop did tell me before i picked it up that it had a lean pop and the carb needs to be rebuilt.
as of now, it idles fine and drive fine when cold, as it starts to warm up it starts to become problematic - it feels like the engine stumbles any time you try to maintain a constant speed (slight throttle engagement), it accelerates fine, but that's about it. You have to drive it in a constant state of accelerate and foot off gas because it does not like you foot on the gas pedal just a little. if you do keep your foot slightly engaged it will stumble and the exhaust will pop - not so much a backfire as there's not at jerking.
-both coolant sensors are new
-spark plugs are FSM spec champion copper 404/rn12yc
-plug wires are a year old (msd cheaper line)
-timing seems fine (around 8-10 BTDC)
-watched at night to try to see if any arcing was happening, none that i could see or hear
-finagled some exhaust restrictors on the exhaust tips out of rubber plumbing couplers and big lag bolt washers to try to recreate the backpressure from the old exhaust, no difference
-went around the vacuum lines with carb cleaner and propane, couldn't find any distinguishable leaks
Fuel filter about a year old- new fuel pump installed while at shop.
So i have a 2000 ford ranger 2wd 4cyl .190k miles. My issue is the motor has a very rough/shaking idle,abs light on,and check engine light on.it also continues to blow fuses to the tail lights and dash, haha
Ive had it since it was at 40k and has been a great truck,although lately i have really neglected it.ive changed the spark plugs and new wires new timing chain. I would d love to start trouble shooting some of this stuff this weekend if the weather holds up.
Mileage 192k. Signs...stumbling/rough engine startup for first time of the day and anytime the engine sits for a few minutes before turning on again (battery charging/speed high enough for engine to start, etc).
2010 Prius engine start stumble - YouTube
Started out with no code, then check engine light started coming on. P0301, misfire cylinder #1. Sparkplugs were replaced, and coil pack for #1 switched with known good one. EGR tube also cleaned of carbon.
Stumbling/roughness has been getting worse, about an inch of coolant used per week of driving. No oil in the coolant, and no coolant in the oil (no milkshake or anything like that).
Dirty fuel injectors were suspected, but no improvement after using Techron. Finally, a boroscope was used to inspect the cylinders through the sparkplug holes, and a very slow leak was found in cylinder #1. Since liquid cannot be compressed, during the compression cycle significant misfiring occurs.
Got an 07 Screw with only 50,000 miles. Yesterday, wife drove it home from work and said it would only do 45mph and didn't sound good. No warning lights were on, she said. I test drove it in the evening and it ran totally fine. Today, she drives it to work and said it ran real rough and "Check Engine" light was on. I picked it up from her work and it idles very rough and slow, and once you hit about 2000 rpm, it runs decent, maybe even normal. Below that, it stumbles and engine doesn't sound right. "Check Engine" light is either ON steady, or flashing. I don't have a code reader, so its likely going to the Ford Dealer Monday. Is there any way to read the code without a reader?
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