Ford 7.3L Power Stroke (1999-2003) :: F350 - RPMs Won't Drop Below About 850 When Come To A Stop
Have a 2003 F-250 with 174,000 miles. Recently replaced CPS and ICP and it's running much better. It normally idles at about 700 rpm. Lately, after driving for any distance above ~40mph, when I come to a stop, the rpm won't drop below about 850 rpm. If I shift to neutral (automatic trans), the idle drops to around 700. At the next stop sign/light, it's back up to around 850.
View 11 RepliesSaturn - Sl :: 1997 - RPMs Will Drop By 500 - 1000 Occasionally?
I have a 1997 Saturn SL1 with 100k. Every so often the RPMs will drop by 500-1000 or so for a second and then come back up to normal. This happens both when stopped at a light and while accelerating, and doesn't seem to happen predictably. I've already changed the filters and cleaned out the IAC, without any success. I've sprayed the obvious connection points in hopes of locating a potential vacuum leak, also without any luck. Other ways to locate a potential vacuum leak that wouldn't be overly time-intensive?
View 7 RepliesDodge - Dakota :: 2000 - Engine Starts But Won't Idle / Just Dies And RPMs Drop
Cold start. engine starts but wont idle, just dies. rpms drop. Restart same. Must neutral drop to get going keep rpms up until engines shifts then things are fine until next cold start. Cleaned throttle, changed air filter, dry gas, injector cleaner, no warning signal, scans clean. 180k miles.
View 6 RepliesFord Super Duty (1999-2016) :: 2000 F250 - Whole Truck Starts Shaking / RPMs Will Drop Down
I'll try not to post an entire book.. But I bought a 2000 F250 not even 8 months ago, it did have issues before but I changed out the spark plugs and coils and it fixed it's original missing issues.. I also just recently changed the fuel filter but it didn't fix it's new problem.. It drives ok around town but if I get over 35 mph it doesn't run well... If I try to keep a steady foot on the gas but don't get the RPMs over 2000, the RPMs will stay where they're at for just a second then they will drop down and the whole truck starts shaking.. I push more on the gas and it shakes even more and the RPMs don't move at all until I really step on it.. It lacks in power going up hills as well... The dealership i bought it from said the Catalytic Converter was bad but my uncle who is a mechanic says it isn't.. It's the first vehicle I've bought so kinda wanna make it last..
View 11 RepliesCamry :: 1999 - Engine Dies When Letting Off Gas / RPMs Immediately Drop To 0
I have a 1999 Camry. I just spent $1250 (half of it borrowed) to have some basic maintenance, diagnosis, and serious repair work done. More than half of the serious (translate: expensive) work involved replacing a charcoal canister and installing a thermostat. The check engine light had been on for at least 10 years. And I had a gas pumping problem by way of the pump shutting off after only pumping a few cents worth of gas. Needless to say it was a royal PIA to fuel up my car. As far as the check engine light, a friend would clear the code so I could have it inspected.
Then more than 2 years a shop took out my thermostat because a hose had sprung a leak and they rigged up a temporary hose until they could order the part. I never went back because I couldn't afford it. I know it wouldn't have been a terribly expensive repair, but at the time it was more than I could afford. So for almost 3 years I have driven with out a thermostat and also couldn't get it inspected.
Fortunately I was finally able to get the necessary repair on my car--replacing the charcoal canister and thermostat--so that it could be inspected. I picked the car up yesterday and everything felt fine and the car ran fine.
Today I drove it about 12 miles from my home, made 3 back-to-back errand stops of not more than 15-20 minutes each and everything seemed fine. Nothing felt or sounded out of the ordinary. Then when I was leaving my 3rd stop, the car would not start unless I gave it gas. And it wouldn't stay started unless I gave it gas. In other words, the car would go, but as soon as I would take my foot off the gas to press the brake to put it in gear, the engine would die. There was no problem restarting it as long as I gave it gas, but I could not let off the accelerator at all or it would immediately die.
The car would go just fine, but if I let off the gas for any reason, even if I was driving 40 miles an hour on the street and let up completely off on the accelerator, the rpms would immediately drop to 0 and the engine would immediately die---no noise, no shuttering, no nothing---just die. This problem occurred almost the whole 12 miles back to my home. Then when I got about a mile and a half away, it went back to behaving completely normal and did not die when I let off the gas.
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.
View 14 RepliesDodge - Dakota :: 1996 - RPMs Will Drop To Near 0 Within About 20 Seconds Of Coming To A Stop
I have a code scanner which indicated that I should change the MAP sensor. I did that, and just for fun changed the idle air control valve and throttle position sensor. Now the idle is extremely smooth in park or neutral, but once I'm in a moving gear it's up to the same shenanigans, antics and tomfoolery I described in my original post: 96 Dakota SLT idles rough & stalls. So I have a 96 Dodge Dakota SLT 3.9 4WD. Anyway, it idles relatively smoothly at about 700 RPM in drive or neutral, but if I'm in a moving gear and need to stop, the idle is extremely rough. Usually, the RPM's will drop to near 0 within about 20 seconds of coming to a stop. It will typically recover and continue with rough idling and near stalling a few times, but within a minute or two it stalls. A few additional details: it starts right up again after falling, it doesn't make any difference if I start it cold and drive immediately or drive it for an hour before coming to a stop, the same thing happens. Anything that looked suspicious to me has been changed (drivebelt, spark plugs & wires, distributor cap & rotor, pcv valve, idle air control valve, and, of course, the air freshener).
View 1 RepliesHonda - 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?
Dodge - Dakota :: 1996 SLT Idles Rough / RPMs Will Drop To Near 0 Within About 20 Seconds Of Coming To A Stop
So I have a 96 Dodge Dakota SLT 3.9 4WD. Anyway, it idles relatively smoothly at about 700 RPM in drive or neutral, but if I'm in a moving gear and need to stop, the idle is extremely rough. Usually, the RPM's will drop to near 0 within about 20 seconds of coming to a stop. It will typically recover and continue with rough idling and near stalling a few times, but within a minute or two it stalls. A few additional details: it starts right up again after falling, it doesn't make any difference if I start it cold and drive immediately or drive it for an hour before coming to a stop, the same thing happens. Anything that looked suspicious to me has been changed (drive belt, spark plugs & wires, distributor cap & rotor, pcv valve, idle air control valve, and, of course, the air freshener).
View 1 RepliesHonda Accord :: 2000 V6 Idling / RPMs Drop On Startup
I've had my 2000 Honda Accord V6 for about 3 years now and have had an idling issue pretty much since I purchased it. After driving for at least 50+ miles, and if its hot out it can easily have this issue as well, and leaving the car be for around 15 to 30 minutes, on start up the car drops RPMs immediately and dies. Multiple tries and it will do the exact same thing. Recently I found out a trick to make it work correctly which is revving the engine to 2000RPM for about 3-4 minutes, slowly dropping it down to 1500 RMP for around the same 3-4 minutes and finally down to 1000 RPM for an additional 3-4 minutes and letting off the gas. Usually after doing this the engine idles fine, car drives great. However, it must be noted that on Summer days with temperatures in the 85+ range, if I'm climbing (going up a hill for a long distance) the car might bog down on me, will not go above 50MPH and I have to pull off the side of the road for 45+ minutes before the car will run correctly again. This has happened about 3 or 4 times in the 3 years I've owned the car.
I would rather not have to rev the engine in hopes this fixes the issue each time so I'm wondering what could be the cause in the first place? I've replaced so many things including spark plugs, ignition coils, battery, idle air control valve, gasket, fuel pump, fuel pump relay and on. I gas the car up with Chevron gasoline, I've dumped in I don't know how many different fuel injector cleaners and have also tried Heet as well as Sea Foam cleaner. I've also had the car checked for vacuum leaks.
I've asked multiple mechanics if this could possibly be a vapor lock issue, but they all turn that idea down. They tell me that since the car is fuel injected this can't be the issue..but, I don't know, could it be the issue?
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.
Dodge - Neon :: 2000 - RPMs Go Up But Will Drop Back Down When Speed Increases
I have a 2000 Neon with about 170K miles on it. with in the last 2 weeks it has been having a problem with acceleration. When i start to drive the RPMs will get up to 4 before it will start to move. Also when i am drive and need to pick up speed the RPMs will also go up to about 4 before it starts to pick up speed, but will drop back down when the speed goes up. I have found a little oil in the spark plug tubes and will be changing the seals out, and I have cleaned to MAP sensor as will. What is going on with my acceleration.
View 3 RepliesExplorer :: Engine Stumbles When Braking - RPMs Drop To Around 400 To 500
95 explorer 4.0l ohv. I go to take off and then come to a stop after about 10-15 feet, i just give it a little gas then lightly press the brake, rpm's drop to around 400-500 then back to normal. I have replaced:
IAC
MAF
Plugs & wires
Coil pack
intake manifold gaskets
fuel system cleaner
fuel filter
air filter
Starting - Ford :: RPMs Drop Between 400 And 500 For About A Second And Engine Stumble
I'm in the military overseas and having a starting problem with my 2006 Ford Five Hundred. When the weather is cold, around 45 degrees F or lower the car starts OK however within about a second the RPM's drop between 400 and 500 and the engine starts to stumble. After about 3 to 4 seconds the RPM's gradually increase to around 1300-1400 RPM and is OK at that point.
View 5 RepliesIntrigue :: Turns On / RPMs Drop / Engine Sputters And Dies
'99 Intrigue (3.5L) with 65k miles. The car has sporadic starting problems where turning the key in the ignition turns the starter motor and results in one of the following scenarios:
1) The engine does not turn on.
2) The engine turns on, RPMs drop and the engine sputters and dies.
3) The engine turns on with no problems (like this morning).
It does not appear to matter whether the engine is hot or cold.
Reading forum posts of people that have seen similar problems, several different solutions would seem to be in order:
1) Replace fuel pressure regulator.
2) Replace crankshaft position sensor
3) Replace camshaft position sensor
4) Replace fuel filter
5) Replace spark plugs
6) Replace idle air control valve
7) Clean the throttle body
Since I rather not start throwing money at the car by replacing parts one by one until the problem is gone.
Subaru - SVX :: Rough Idle / RPMs Drop Very Low And Engine Shuts Off
1997 Subaru SVX (Alcyone) LSi, 3.3L H6 engine.
My SVX was driven from Denver to Las Vegas, NV and it developed an odd habit where the RPMs would start to oscillate while on cruise control. I had to disengage the cruise control to get the oscillations to stop. Three days later I was driving the SVX to work and the RPMs started oscillating at idle and the car started running rough and it died.
These things have all been replaced with OEM grade parts: Spark plugs, electric fuel pump & strainer & fuel filter, Mass Air Flow sensor, new air filter and fuses.
The car starts up fine but after a few seconds the RPMs begin to oscillate. Then the car tries to recover, the idle becomes rough, and the the RPMs drop very low and the engine shuts off.
Santa Fe (CM - 2007-12) :: 2010 - RPMs Drop Low After Engine Turns Over
I have a 2010 Santa Fa GLS. 88K miles. This issue started in the last 6 months, once the engine turns over the RPM drop low and starts to putter as if it is not getting enough fuel. If push down the gas when starting it works. Once it passes the first 2 -3 seconds everything is fine. No issue idling or driving. What this could be? It's not an issue with Starter, Battery, my best guess would be a sensor, leaky fuel injector.
View 1 RepliesFord :: 1997 - Engine Disengages RPMs Drop Below Idle
Twice now this has happened to me and I'm concerned it will become worse if I don't fix it. Driving down the road my engine has disengaged. By this I mean the vehicle both times has been at 55 MPH, my foot on the throttle rpms riding around 1300 revolutions, and the engine disengages rpms drop below idle and my "wait to start" light comes on. This both times lasts approximately 2 seconds and throttle reengages while still traveling 55 MPH, "wait to start" light goes off and its like it never happened. What's going on with my truck? Ford diesel 97 250 7.3 ...
View 2 RepliesSuburban :: 2003 - Reduced Engine Power / RPMs Drop To Below 1000
IOur 2003 suburban often gets a "reduced engine power" displayed by the computer and the RPMs drop to below 1,000. The vehicle will not accelerate and will not go above 1,200 RPMs no matter how much gas it is getting. Flooring the gas pedal has absolutely no effect and the truck continues on its merry way at about 20 miles per hour.
I have been told by various amateurs that it is the gas lines or electronics that regulate the gas flow. The reduction in engine power seems to happen randomly, but most often if the vehicle is idling for too long (and I'm sure the 110 degree heat doesn't work). I can get it fixed much quicker if I know what the problem may be.