GMC - Sierra :: 2000 - RPMs Drop Rapidly - Codes P0174 / P0171

I have a 2000 GMC sierra 1500 5.3 L V8. Recently I have noticed that when I first start my truck, especially if it's a cold start, it doesn't seem to be running right. It sounds almost as if it's not getting enough fuel to me but I'm not sure. It will first run really good, and then it will drop in RPM's pretty rapidly and almost sound as if it was about to die, which it has died a couple of times in the past from this problem.

Once I give it some gas it seems as if it comes back to life, but if I happen to stop at a red light or stop sign pretty soon after driving, I will encounter the same problem, where it sounds as if it may be about to die. After I get going though, the problem disappears and the truck runs great. I decided to pull the codes finally today, and code P0174 and code P0171 popped up. I have looked at the vacuum hoses and they all seem to be in good shape, but like I said earlier, I could be wrong.

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Ford 7.3L Power Stroke (1999-2003) :: After Start Up RPMs Drop - Stalls Out Then Idles Rough?

2003 7.3 excursion.. The truck starts every time revs up and idles about 3 seconds then the rpms drop and it tries to stall out catches itself then revs backup and idles rough similar to if you have got air in the fuel lines from changing the fuel filter.. About 1 in five times the truck will stall out and it starts and immediately and idles rough but the rpms and everything runs at speed and rpms don't drop again! This is a reman engine/transmission recently installed.. The mechanic who installed it was unable to figure the problem out.

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Caravan/Voyager :: 96 Plymouth 3.3L Suddenly Stalls - RPMs Drop To 0

1st problem is shifting from 1st to 2nd and sometimes from 2nd to 3rd though, 2nd to 3rd is not as bad as from 1st to 2nd. It stumbles and gets really bad if I don't let up on the gas. After the initial shudder it will go into 2nd just fine. I also have to gun the gas a little bit when I first start the car, or it will just sit there and idle and never go into gear.

2nd and more annoying is that it stalls after driving around a bit. It happens on freeway or city. It doesn't stutter or anything the rpm's drop to 0 and it just stalls and won't start up for a 5 - 10 minutes or so.

Codes pulled are P0731, & P0736. The transmission was replaced about 2 years ago with a refurbished one. Could it be going out again already? The guy at Autozone suggested replacing the TSS (Transmission Speed Sensor?) to see if that was the problem. I have not done this yet, but plan to.

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Explorer :: 2001 Ford - RPMs Drop To About 4 To 500 And It Stalls Out In Reverse Only

I own a 2001 Ford Explorer and have had the regular wear and tear but this problem has me stumped. A few months back I had to change the auto body gasket because the truck would not go into gear. After doing this the truck ran fine, I also changed the tranny fuild and filter. The other day i went to back up into the garage and the truck stalled and died out. it started right back up and it runs fine in all other gears. (P,N, D, 1,2, 4x4 high and low) and the over drive is working fine. when the truck is cool and hasn't ran in a while i can start it and the rpms stay at about 1000 th 1200 and the reverse works great. Now when the eng. heats up to normal and i put in in reverse the rpms drop to about 4 to 500 and it stalls out and dies. I have cleaned the mass air flow sensor, the throttle body, and the IAC valve but still dying out. Im thinking it may be a vaccume leak or the IAC is bad and cleaning just wont do the trick. I have also read that it may be the back up light wiring that hooks to the tranny may be shorted out.

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Camry :: 2003 V6 Stalls At Stops Randomly / RPMs Drop And Then It Revs Up

I have a 2003 Camry 3.0l v6. Stalls at lights random.

Currently the car stalls at stops but this doesn't happen all the time it can go a month in between the problem occurring its very random. While sitting at a light the rpms drop and then it revs up and cycles like that for quite a while. This will also occur while cruising at a low speed while I'm just coasting the rpms will go up and down. I can compensate while stopped by power braking and keeping it at its normal idling rpm. I have no check engine lights and can't seem to determine what would be causing this issue.

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Elantra XD (2001-06) :: Stalls While Driving Frequently / RPMs Drop For A Split Second

06 Elantra Limited, 96,xxx miles. When I'm idling at a light or something, the Rpms drop for a split second, almost to the point of stalling, but recovers. Happens in a split second. Does the same thing even when driving, but does it more frequently when idling. It even does that when I first put my foot on the throttle to accelerate from a red light.

I've cleaned the throttle body but it still does it. I've taken it to 3auto parts stores. One said that battery was bad. The other said the battery is fine but alternator is producing low. The last said both are fine.

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Honda - Accord :: 1983 - When Rolling To Or At Stop RPMs Drop And Stalls

I have a 1983 Honda Accord (manual with nearly 200,000 miles) when rolling to a stop or at a stop rpms drop below 1000 and it stalls out. I can start it back up without hesitation.No hesitation at initial startup or after sitting short or long time, it idles while in park rpms about 1000.When I feel the engine about to stall while rolling to a stop or at stop, if I put my left foot on the brake pedal, slightly step on the gas pedal with my right foot it prevents the engine from stalling. At stop if I put in park, rpms raise and don’t need to give it gas.

I'm unable [& unqualified] to work on my car. Given I drive only about 1,000 mi year; my alternate form of transportation is a bus or kindness of friends, I’m on a limited income, cannot afford to buy/ spend more than 2,000 -- my question if 2-foId, 1. is it possible that something it is nothing major and worth repairing/replacing (ex. air control/idle air bypass valve, a dirty throttle body or even carburetor)?2. Or, as discussed with one mechanic, since the car is 33 years old, during or soon after repair other problems (dried out vacuum hoses or major) will follow. Plus, parts can be difficult if not impossible to replace as a I spoke to mechanic pointed out.Given the car’s age is it worth repairing?

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Suspension - Mercedes-benz - S-class :: 1987 - Rough Idle And Stalls / RPMs Drop

Hot or cold car always starts,Idles perfect , then RPM drops, Idles rough and stalls. Econometer moves to Red area.car will easily restart and drives well,it also idles well. Once engine is shut down, even for a short while, It does the same thing again. Car is used for short trips. Ambient Temperature 80 degrees. Once running car is perfect at all speeds and idles smoothly. Hero 1987 MB 560 sel ....

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Lumina :: 1996 LS Intermittently Start With The Key

Because my car would intermittently start with the key (it would run fine if I jumped the relay at the starter) I just put in a new Autozone lock/cylinder in my old '96 Lumina LS. Prior to the install, I took the new lock/key and old key to the locksmith, who told me he has the tool to read the resistance on the key which corresponds to the computer in my car and I wouldn't need to go to GM. Also, the brake lights weren't working right so while I had the steering wheel off I replaced the turn signal switch too.

I went to check to make sure the turn signals/brake lights worked before buttoning everything back up so I reattached the battery, with the key in the new lock; the dash lights came on, the chime went off as they should. I then put the ignition key in the 'run' position and the chime died and the lock mechanism will no longer turn and I get no lights at the dash. The car won't shift and I'm effectively screwed! FYI - The headlights and brake lights both now work but I can't turn the key in the ignition. Did I just get locked out? Did my locksmith hand me a line of bull?

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Prius (2004-09) Fuel :: After First Bar Drop, Gas Is Losing Rapidly

i've noticed on my 2008 prius that once i lose the first bar of gas i begin to rapidly lose the rest. For example the first bar might take three days to vanish but once its gone i might lose the second bar on the same day i lost the first.

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Camry :: Rough Idle - Vibration Start As Soon As RPMs Drop A Little

I've made posts about a rough idle before now I noticed something new about it. I noticed when I approach a red light the vibrations don't start immediately. They start as soon as the RPMS would drop a little. They stay above 500 but it seems like it's below 750. As if the engine is slightly starved from power? Now i'm wondering if it could be related to another problem I have.

Whenever I start the car, the battery light flickers until the car is started all the way. This is on a 2007 Camry 4 cylinder. So far everything iv'e done is: New NGK Spark Plugs, NEW OEM mounts (all 4) Seafoamed the engine, Seafoamed the throttle body, cleaned the MAF sensor, New air filter, and cleaned the air filter box, replaced the PCV Vlave, new belt, new alternator (duralast), and a new battery (from autozone).

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Integra :: At Stop Light If Hit Brakes A Few Times RPMs Drop And Start Going Up And Down

Basically i have an integra here used to be a gsr with a type R engine. Basic bolt on's and 8lbs flywheel, 6 puck racing clutch. Here are the problems, i hate fixing other shops messes but here we go. When sitting at a stop light if we hit the brakes a few times every time we do it the rpm's drop and start going up and down, some times when the car is just sitting there idleing it does it. Had the same problem on a del sol with a gsr engine and b16a2 head on it done from the same shop. Also when its cold the owner complains that it will take him like 1/2 hour to start it. I was thinking that the grounding wasn't good enough. The check engine light is on as well, but how to get the ecu codes out of this ecu.

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Camry :: RPMs Go As High As 3000 For A Couple Of Seconds And Then Drop To Normal On First Start Up

I've noticed on first start up the RPMs go as high as 3000 for a couple of seconds and then drop to normal even at 68' degrees,is that normal? because if it is what will aspect when the temperature drops to 20 or even lower.It is a 2.5 liter 4.

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Elantra MD (2010-15) :: Acceleration Drop To 1000 / 1500 RPM Very Rapidly When Gear Shifts In 2nd

I have only done 18,000 Kms on my 2013 Elantra GLS. Whenever I am in traffic driving real slow, and whenever the gear shifts in 2nd, the acceleration begins to drop to 1000/1500 RPM very rapidly while pressing and releasing the pedal, and it becomes jerky...

I will try posting a video, but meanwhile, it gets really annoying at times and I need to maintain a very feather foot to make sure it doesn't jerk especially when there are passengers on board..

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Volvo - S70 :: 2000 - After Start Up Rpm Don't Stay Constant And Stalls Intermittently

We just brought a 2000 S70 Volvo 5 cyl. sadan. There is a problem when we start it up. Initially it starts up fine, but when you put it into drive, the rpms do not stay constant enough to keep the engine from stalling out. When you restart it, the problem repeats and repeats about five or six times, until the problem corrects itself. If in an effort to increase the rmps by applying the gas pedal, the problem may cease, but not always. Once the rpms remain constant, there are no longer any problems with the engine.

This problem is not a constant. It mostly happens when the engine is cold, but it can also happen when the car has been running and then turned off. When you turn on the warmed up engine, the problem happens again. Because we anticipate the repairs on a Volvo are likely to be expensive, we would like to have an idea of what could cause this problem and an anticipated cost.

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Chevrolet - Lumina :: 1992 - Engine Won't Fire After Ignition

Recently my '92 Chevy Lumina (115,600 miles) has taken to not "firing" after I turn it on. It has a brand-new battery and altenator so there's plenty of current. I usually try to get it running 3 or 4 times and if it won't go, I leave it so as to not wear down the battery. It's as if it's not getting any fuel and yes, I do have gas in the tank. I've had the pressure in the fuel pump checked and it was within normal range although on the low end. I can wait 30 seconds or 6 hours and eventually it will "fire" and run.

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Toyota - Camry :: 1992 - Cold Start Idle Is Up To 2000 RPMs Until It Drops To Normal Within 3 Minutes

I replaced my engine that had 155,000 miles with a newer used one with about 30,000 miles. since the swap my gas mileage is down by one third or more. Everything else seems fine except that my cold start idle is up to 2000rpm's until it drops to normal within 3 minutes.

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Mini - Cooper :: RPMs Spike Rapidly From 3K To 4K

In the past month or so I've noticed some weird behavior out of my car. 2006 Mini Cooper 130K miles on it (still going strong!!) Automatic.

Scenario 1 - Driving in D accelerating at a normal pace (read, not gunning it) the RPM's spike rapidly from 3K to 4K and the car almost sounds like it's redlining. Once it hits 59-60 MPH it drops back down to 3K RPM and the rest of the acceleration is normal.

Scenario 2 - Cruising on the highway at about 70+. Normally start taking the foot off the gas to slow down with traffic and when my speed drops to about 60 MPH the RPMs spike again from around 3K to about 4K. When the car gets below 60 MPH the RPMs drop again. If i let the car come to a stop the RPMs decrease normally without any other spikes.

Scenario 3 - Driving in sport mode (yeah buddy) around 20-30MPH it almost feels like the car is not upshifting and the rpms go crazy. jump from 2500 to about 4-4500 and finally the car lurks forward.

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Chevrolet - Lumina :: 1992 Running Rough When Hot And Cutting Off At Stops

My main top water hose burst. I replaced it. Car ran hot. Replaced the thermostat, coolant sensor, and 12 volt relay fuses for primary and secondary fans. Still ran hot. Fans not coming on. I tested fans in service mode by paper clip to F and G in the diagnostic scan box. Fans came on, so no blowed motors. Got desperate, so ran a toggle switch to primary fan, so fan would run while I drive. Still, when the car gets hot, after about 5 miles of regular driving, the car huckabucks, and cuts off at slow downs and stops. Really bad in the middle of light intersections.

1992 Chevrolet Lumina 3.1 6 cyl ....

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