SC/SL/SW :: 2000 SC2 Accelerates On Its Own When Driving And High Idle
Dec 16, 2012
I have a 2000 sc2 saturn DOHC 1.9 engine with just under 200k miles.
My problem is this, I recently purchased this car and was told it is in desperate need of a tune-up, being broke I decided to replace the cheapest parts first. I started with spark plugs, they are all gaped at 0.40 and all are new and the right ones for the car, ever since i changed the spark plugs the car has been idling rough (when i start it rpms go to 2500+ for about 10 seconds and drop to about 800-1100, when i shift into any gear it revs the rpms back up and they drop gradually). My other problems are that my car sounds like it is souped up and sounds like a rice rocket, when i put it in drive it starts to accelerate on its own and has reached around 40 mph at a gradual increase.
My uncle who was a mechanic said it could be the IAC, EGR or throttle position sensor, or cadilityc converter i replaced the IAC and it don't really seem to have worked much.
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I drive a 2000 Dodge Dakota Sport w/ 4.7L V8 engine. I have been dealing with an overheating problem for about 6 months now and have nearly exhausted all hope of correcting the issue. It has been in the shop on 4 separate occasions and seen 2 different mechanics. The radiator has been replaced, the thermostat and thermostat housing have been replaced, the radiator fan works properly, hoses have been replaced and no subsequent leak has been found by either mechanic, they haven't mentioned the possibility of a blown Head Gasket (nor has the typical "milky residue," shown up in my oil cap). Each time I got it back from the shop the problem was fixed for about two weeks, then returned and slowly got worse.
It overheats in idle (with the fan running), on the highway at high speeds, and while driving slow. Sometimes it only gets about 3/4th to the red (usually when its cool at night) and sometimes it will hover just below the red; while I'm doing everything I can to keep it from hitting red (defrost on, revving engine). Some days it takes a little while to get hot and some days it happens very quickly. I'm tired of sinking money into the vehicle but as a recent grad I don't have the money for a new truck at this point. Suggestions included heater core clogged, water pump gone bad, fan clutch.
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I have a 2007 Passat with >120k miles on it. For the last month or so, occasionally when I start the car up, the EPC (I think it stands for Electronic Power Control) light and the Check Engine (the engine sign) light comes on. When I hit the gas, it barely goes past 20 and seems to be revving really high (almost redlining) before it finally accelerates. Needless to say, this is not a good thing; especially when it happens on the freeway.
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My ranger has a 3.0 v6 engine it idles high and accelerates on its own sometimes. Sometimes its more often then others. I turn my key about three times thinkin its reseting the computer and stop it and it does. But I keep hitting a dead end and don't know what to do about it.
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Toyota Camry 2000 , 195,000 miles
Last couple of months or so, my vehicle would intermittently stop accelerating, especially when climbing hills. A couple of days ago, the vehicle is completely unresponsive when pressing down on the gas. The vehicle revs, but won't go forward. It will only go in reverse. Everything else is working in the vehicle.
I went ahead and put about a half quart of transmission fluid. Still nothing.
Other information: the vehicle has been leaking engine oil and transmission fluid for the last several months.
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When the car is idle it makes a loud noise,also it revs like 1500 and accelerates on its own. What the problem could be? 1994 mercury cougar 3.8 ....
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My girlfriend has a 03 celica gt with around 126k on it. most resent it has had a problem of high idle its sits anywhere from 1100rpm to 2000rpm. I replaced the the tps sensor figuring it was the problems it seemed to get more consistent with the new tps it now sits at 1100 but it may still be high I don't drive it a lot. And I forgot to mention no engine lite. I've herd its not common with toyota. I also looked for vacuum leaks as well but found nothing.
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I have a saturn sc1 2001 and the idle is pretty high (2000rpm) what could be the problem ? i already cleaned the IAC ...
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The equipment:1995 Buick Regal Custom 3.8
I noticed a year ago that my car would randomly stall out coming into work after a 20-25 minute drive. It then started to idle really high, very rarely. So i cleaned the throtle body, new air filter, new fuel filter, sparks, and wires. This is about where my expertise ends.
Its seemed better, however, it would act up now and again (stall) but I was fine with it.
Recently I have noticed that the car idles really high 1.5 in drive (compared to 900) and 2k in park after I have drove for 20-25 mins. So I put the computer to the car and all I have is transmission error codes which I have had since I owned the car at 80,000 miles and I am now to 160,000 miles. This car has been pretty good to me because it starts, goes forward, and backwards! What else can you really ask for. A better idle maybe?
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I have a 99' Mazda B2500 5 speed manual transmission that will idle high sometimes while Im driving, that is in motion coating or in gear. It idles high enough it will cause the truck to speed up or maintain speed when i let off the gas in gear, and when i put it in neutral it will either stay at the rpm it was running at or it will speed up to 2500 - 3000 rpms until i slow to almost a complete stop, then it magically goes away. It will only stop the high idle when i come to a complete stop, even though it will go away just before the truck comes to a stop, if i touch the gas or put it in gear for a California roll it will kick back up to 2500 rpm and keep it up. It does not do this all the time. some times i go months without it happening. Sometimes it goes away in a few minutes and some time it will do it all day on a 18 hour ride. It is totally up to change whether or not its going to act up. Iv had it like this for year and cannot find a pattern to it at all. The amount of gas it gets at high idle speed is not much and is only noticeable on the highway when I go to coast or change gears, in town I notice it every time i come to a stop.
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I purchased a 2000 4X4 V10 with 63,000 miles. It sat with very little movement for 12 years or so. I have been driving it for a few months and it now has 73,000 on it.
To my question. I have an high idle after start up. After the engine starts the idle goes up to 2K but comes back down to normal(1K or so). It takes a second or to 2 for the idle to drop. This seems strange to me. Is this normal? I've done some searching and found plenty on high idles but none seem to fit this condition.
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I have a 2000 X V10 and am having an intermittent high idle condition. I have searched the forums and found some useful info but nothing that addresses this issue. Here's what I've done. New IAC, found PCV valve hose leaking-replaced also new valve, found another vacuum leak-repaired, tested TPS and that was fine according to the specs I found. So here's my problem-upon starting engine occasionally "stumbles" then roars to life idles 8-1100rpm. Drives well till stopping at an intersection and idles 1100-1200 rpm.(lots of brake) Can pull into parking spot place in park and will idle up 1500-1800 rpm and then only drop to 1200 or so. I have checked everything I know. ALL these idle conditions are INTERMITTENT. (and yes I did check for codes "0" ) There is no loss of power.
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I have a 95 neon SOHC that drives with a very high Idle. Not all the time, but 85% of the time witch i find strange. This has been going on for the better part of a year and the car is almost undrivable. Its putting a hurting on my breaks for sure.
I had replaced the PCM 5 years ago. Replaced the timing belt 2 months ago. I have searched all around for vacuum leaks but am not able to find anything. I pulled the throttle body off and cleaned it very well. I replaced the IAC.
The car continues to idle out of control as if the IAC is wide open. The only way to get the car to idle correctly is to cover the idle hole in the throttle body 90% up with my finger. The guy at Auto Zone said if its not IAC or vacuum hoses, then I should start replacing sensors. How do I diagnose this problem?
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While driving, I noticed that when I floor the gas pedal to go faster, the engine revs up and takes about a second or 2 until the car accelerates. i also noticed that if i let go of the gas pedal while the engine revs then the car doesn't go any faster, it just revs then goes back to normal. Whats going on?
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Camry 2000 CE 102,xxx miles. My car died in Jan 14, after have P0770 for while, only Reverse gear work. The mechanics said the tranny need to re-build. I had him bring the tranny to tranny shop to re-build ($1650), then the code still pop up. Brought it back, they said the ECU needs to be reset. I had the car next day then that code pop up again!
They replaced the Solenoid E. The code is still there. Brought the car back, they took the tranny to rebuild it again. Drive the car for a day, the darn code pop up again, now they blamed on the ECU. Ok my mechanic guy replaced it at my own cost for part ($150) but the code is still there. This time they blamed on the high idle rpm approx. 1600-1800. My mechanic tried to fix the high idle speed so the tranny stop blaming other causes. He cleaned IAC valve, replace O-rings (I don't remember the location of them) then he said whenever he inserted the new ones, they start to crack!
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I will try to keep this short. Picked up a 2000 f-150 4.2 for my nephews first truck last night. Bought it blind against my better judgement, but the price was right. Got it home, odometer didn't work, fixed the solder joint and was happy it only had 132k on it. Heater core was plugged solid. Got it flushed and at least now its has luke warm heat until I have time for a full coolant flush and new core.
Next on my list is the high idle and engine lights. Its idles around 1300-1700, cold or hot sometimes it drops down. I only have a cheap scanner, but I have 2 codes. PO171 and PO174. Where should I start with diagnosing this? I would assume vacuum leak. Any common spots to check on these?
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I'm trying to find out what I need to check or replace to get my 2000 Excursion to idle at normal rpm's in park and neutral.
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I just bought a 2002 Accent L 5sp with 37,000 miles. It ran great for a couple hours, then started hesitating/bogging over half throttle. I also noticed the idle was a bit high at this time. Suspecting a dirty throttle position sensor, I repeatedly pressed the accelerator pedal to the floor for 15 seconds with the engine off.(this will sometimes clean gunk off the contacts inside the tps) I drove the car again, and now the symptoms changed. Now it has a hesitation under half throttle, and accelerates cleanly above that. Car has not and is not misfiring. I am on the right track with the tps sensor here?
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I'm struggling with an intermittent (of course) issue where, esp. if cold, I can't start my car unless I give it lots of gas. If I take my foot off the gas at all, it will stall, which means I drive this automatic two-footed (one foot on brake, one on gas) , giving it lots of gas at all times, including when stopped. After about 10 minutes it is fine, and is then good for the rest of the day. My trusted Volvo-spscific repair shop has tried replacing booster pressure sensor, fuel pressure regulator (both indicated by engine codes) and new plugs. The end result is I've got $500 into the car that does seem to run better when it starts, but the original issue is unsolved. I was thinking something is sticking with a cold start, or idle speed is incorrect, but can't figure it out. Seems like it should be an easy fix.
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I have 95 ranger 3.0L revs up over 2000rpm at startup then comes down slowly to a little over 1000... Changed the IAC valve still does it... When I let it warm up I unplug the IAC and idles normal and smooth about 750 RPM so I don't think it's a vac leak... What else could it be???
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'97 Taurus GL Wagon 197k: Some of this stuff has been going on for some time now (several months ... maybe even a year).
1.) Driving Itself:
Car seems to drive itself on my way home from work which is a long, flat road in the 45-55 mph speed range. Once I get into this range, I can take my foot off the gas pedal and the car pretty much maintains speed until I get to an upgrade. I've even noticed times when I'm not pressing the pedal but the car is slightly speeding up to the point where I have to keep tapping the brake to keep from getting too close to the car in front of me.
2.) Stalling/High Idle:
Sometimes when I come to a less than smooth stop at a light - say, a yellow light that quickly turns red and I have to stop quicker than I'd want, the car will stall out. This has only happened a couple of times in the last 6 months, but it had never done this at all up to this point, so it's a new phenomena. Otherwise, the idle is usually at 600 rpm (except recently I've been seeing high idles of 2000 rpm every so often, which is really weird!!). Also, it seems like if I park the car on an incline, the engine will turn over many more times trying to "catch" and start - and the whole start-up sequence just feels weak - like it's not getting enough gas.
3.) Tach Bouncing:
This one's got me the most concerned because I think it's the most serious (and potentially the most costly to fix). I completely transfused the tranny fluid a few months ago as a possible solution, by the way, so the fluid (Dexron Mercon IV) is fresh. At about 1500 rpm on the tach, the tach sometimes starts bouncing up and down on the scale and I can feel a metallic engagement/disengagement cycle. If I get above or below this area on the tach, however, no problem. Also, taking off from a standstill -even though I accelerate very slowly and smoothly because I KNOW the tranny is "soft" and will 'slip and slap' if I don't - I'm recently starting to feel a very very brief grinding-like slippage feeling that does not hinder acceleration much at all, but feels very unsettling. This is a new feeling and it only happens every now and then (so far).
You're gonna say the tranny's on its way out, right?
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