Questions tagged [rough-idle]
Questions about troubleshooting and solving rough idle problems
198
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Engine's RPM drops right after start and after letting off the gas
Car in question is a 1993 Mazda Miata with 1.6 liter engine.
Right after I start the engine the RPM drops below idle and the engine shakes a little bit but quickly recovers. After I give it a very ...
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Engine sputtering, not accelerating. Left for 20 mins and is now fine?
The car is a Mk1 Golf (1993, 1.8lt, mechanical injection).
I was driving up a medium incline and suddenly my car starting sputtering and I lost acceleration. I pulled over and started the engine ...
- 3,726
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3
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Engine idles badly and loudly when I switch on the A/C
The engine of my 1984 Toyota Carina AA60 works great when idling without the air conditioner running, but immediately after switching it on, it idles very badly, and a big noise starts up. If I move ...
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2003 Yukon XL 1500 5.3L Very rough, unstable idle on cold starts
When I say rough I mean like bad 70s carbureted motor rough. I've never seen an injected motor this rough during warm up. On the coldest days, it can even die out on me. The problem has only popped up ...
- 199
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Why is my Chevy 2008 Cobalt not acting as though it's getting enough fuel and reading "cylinder 4 misfire?"
I have a Chevrolet 2008 Cobalt (LS) that I've had for about 7 years.
No sooner do I have this thing payed off, when it starts giving me the following problem (I've never had any trouble with it ...
- 141
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Should the EGR be activated at idle?
My 98 Mazda 626 2L ATX has a fully electronic EGR valve controlled by the ECU. I've been trying to figure out a rough idle problem for a long time, which gets worse when the engine is under load, ...
- 15.7k
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Rough idle when AC is on
My Toyota Vitz 2007 idles roughly when AC is on. If AC is turned off, the idle becomes much smoother.
This vibration is more visible if I suddenly stop in traffic. As soon as I stop, several rough ...
- 1,001
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Hard shuttering and engine dies when A/C is on at idle
When the car is idling and the A/C is turned the engine will shutter hard and/or turn off. I've already replaced the IAC valve; it was working for a little, but now it's back to shutting off.
The ...
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98 Mazda 626 GF 2L ATX zero ignition timing at idle?
My 1998 Mazda 626 GF 2L ATX has zero ignition timing at idle when fully warmed up causing a rough idle condition. I've replaced the faulty O2 sensor with no effect on the retarded timing and replaced ...
- 41
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Noisy Power Steering Pump on a Cold Start
I've occasionally noticed that on a cold start the power steering pump will be a bit noisy. I've only noticed it a few times over the past few years, but yesterday I was under the hood right after ...
- 15.7k
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2005 Mazda 3 2.3L rough idle
My 2005 Mazda 3, 128,300 miles and manual transmission, has been running well for quite a while but a couple of weeks ago it started idling rough/low once warmed up and even stalled a few times when I ...
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Why did my Kymko 50cc Agility Scooter suddenly stop running?
I have a brand new Kymco 50cc scooter and all of a sudden it won't stay running. I found 3 hoses that go nowhere, is this normal? I think my ex cut the hoses...hope I'm wrong!
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Car sounds and feels like wants to shut off
2000 Mercury Grand Marquis ....... My car sounds and feels like wants to shut off.
It started yesterday - I was leaving a friends house and was about 2 lights away from home when i felt this weird ...
- 41
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3
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E46 rough idle with coolant light on
The car is 2001 BMW 330i. I have changed ignition coil, spark and IAC. Last week, my car experienced rough idle. Then I changed the coolant temp sensor today. After adding coolant and bleeding, the ...
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2004 Mercury Sable -Trouble with starting and stalling
I've had my car in and out of the shop for several weeks and I'm really becoming very frustrated. I don't really know ANYTHING about cars, but about a month ago the car would sporadically have ...
- 41
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VW Jetta 2008 starting problem - idle problem
I have a VW Jetta 1.4tsi 122 (2008) and it has a strange behavior.
First of all, a have noticed that it doesn’t keep the same rpm when runs on idle. For example, when I stop at the first traffic ...
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engine runs rough for ~1 min, then starts ticking for a couple minutes, then fine
Vehicle: 2003 Kia Sorento, 193k miles
It started ticking 3 weeks ago while the wife was driving. I test drove it, and the ticking quieted down to no tick over the day to and from work. I drove it ...
- 41
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Engine running rough after spirited driving [closed]
My car is a 2003 Chevy Impala 3.4L, with just over 200,000mi on it.
I've checked the oil, it hadn't been on the road in about a month. My wife and I had a race a few days ago with her in the Impala ...
- 41
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1998 Mazda 626 LX with CEL and rough idle
I have a '98 Mazda 626 LX. About a month ago it suddenly started shaking really badly, so I took it to Midas for them to check the engine. They told me it needed a fuel flush, throttle body cleaning, ...
- 41
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2008 2AZ-FE rougher, throatier idle; and growl on heavy accel out of sharp turn
I have a MT Scion TC.
Key detail on the heavy acceleration out of sharp turn is this usually only happens when I've been engine braking into the turn, and not every time. I'm not certain on the ...
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Ford Escape 2002 idling rough in cold weather
Last week my 2002 Ford Escape started idling rough when the temperature was in the 30-40°F (-1°C to 4°C) range. It also seemed to have trouble shifting or something at 40-45 mph. I'd describe it as a ...
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Timing sounds off, how do I confirm this?
This is a 1997 vauxhall corsa B.
I recently had the timing belt changed, by a professional mechanic that I have lost touch with.
I find that after not using the vehicle for a week or two, after ...
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Idling problems on 2004 Ford Mustang 4.6L V8
Need some help. I recently bought an '04 Mustang but am having idling problems. I've looked up some things on the Web but they didn't do anything for me.
I've clean the IAC and it helped some but not ...
- 33
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1
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Engine Turns Over Gets to 500rpm, Shakes, Then Loses Power After Spark Plug & Wire Change
I drive a 1994 TOYT Camry LE 2.2L Coupe.
A couple days ago while I was driving, I stopped at a stop light and my engine block started shaking the whole care at low speeds and idle.
I replaced the ...
- 33
3
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2
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BMW e36 wont maintain idle
A friend has an e36 that wont maintain idle.
The car is driveable but coughs and stops when idling.
I've checked the air box and boot and they are in good condition - no leaks. I think spark and ...
- 3,726
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2
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What could be causing strange idling behaviour on twin carb motorbike?
I have a pretty old Varadero. It's a 125cc twin-carb v-twin.
I open the choke to start it, it starts first time, warms up slowly (10-15 mins), then when I push the choke in, the idling doesn't really ...
- 155
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2006 Pontiac g6 rough idle and intermittent spongy brake and starting issue
I have a 2006 Pontiac G6 with 160k on the 3.5 motor. Around 155k the brake pedal went hard and spongy. Also, about 1 in every 40-50 times I start it cold, the starter will turn without a successful ...
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Small two-stroke engine runs poor
I have a borrowed cultivator (Echo TC-2100), and having hard time running it. It looks fairly new, and in good condition, but was possibly poorly stored and was not winterized.
At first I could not ...
- 2,420
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2
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1991 Bonneville Idles Poorly When Stopped
Recently my '91 Bonneville has been having an issue with idling while stopped, which may or may not have coincided with Service Engine Soon light turning on. The main symptom is an overall drop in the ...
- 131
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Low idle while on Drive - Lexus LS430
Today I noticed something annoying on my 01 UL LS430, The RPM rate drops to around 500 when I set the transmission to "D" along with a slight vibration and strangely. If i change that to P, N. or even ...
3
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1
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High Idle in Tata Manza, occasionaly
I have noticed that the diesel car idles high (1400-1600 RMP) in Idle. This is occasional and some times the engine check light comes on and goes off.
scanned the system, but was not able to find ...
- 31
3
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1
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03 ford expedition with a poor idle to start
Please can you tell me what else do I have to check to solve the problem.......because what I have done in my truck haven't helped. It does start the engine but after I try two or three times after ...
- 31
3
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2
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1995 Chevrolet Blazer - Spits and sputters over 45 mph
When my truck idles it's smooth but when I get on road and the engine gets up to operating temperature it spits and sputters. When I pull into the driveway, it cuts off. I have replaced the fuel pump,...
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0
answers
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2011 Chevy Impala was inactive with dead battery for 3 months! I have tons of problems now! Help!
In late December 2017, I discovered my 2011 Impala wouldn’t start.
My boyfriend and I jumped it with our other vehicle and it worked. We disconnected the cables and left it running for a while. We ...
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0
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What could be making my truck skip?
I have a 2006 Chevy Silverado 1500. It's been skipping for several weeks now but not really throwing a code. I've changed the fuel pump and spark plugs but still skipped. Then I came out one day and ...
- 31
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0
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Light shudder on idle speed
I have a 2003 Golf 1.9 TDI pd 100 with 120,000 on the clock.
When I have the engine running at idle , after a about 30sec to a minute, it starts to shake a little, like as if an injector is not ...
- 31
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1
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Slight vibration while idling
I just did a change oil and then change spark plugs (from normal copper to platinum if that matters) and high tension wires for my Protégé 2000 Mazda Automatic Transmission.
Prior change my idling ...
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0
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Performing a Cylinder Power Balance Test
In the course of trying to diagnose a hot weather rough idle / stalling problem ( which doesn't occur in winter weather ) on my 97 Mazda 323 I performed a cylinder power balance test eye balling the ...
- 15.7k
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1
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Rough Idle & Stall While Stopped
Make: BMW
Model: 535 IS Automatic
Year: 1988
Miles: 230K
I have a very similar problem to (Automatic: revs dropping then stalling when stopped at lights) The car is fine in just about every ...
- 123
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2
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cause of Rough / fluctuating RPMs in low RPMs
It's not dying (hasn't yet) but when the car is idling or in low RPMs the car (Mazda Protege 5 2002) is fluctuating in RPMs.
Also, the last start was rough.
I've had issues with air intake before ...
- 121
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1
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Is a +/- 10-15 rpm idle fluctuation normal?
98 Honda civic ex
I'm curious if during idle, it's normal for the rpms to fluctuate 10-15 rpms +/- or if it's supposed to always be steady constantly?
My OEM tach doesn't pick up this slight change ...
- 103
2
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2
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Jeep stalls a lot has trouble idling after battery pulled for a long time?
I've had this a problem a lot with this vehicle. I have a 99 Jeep Wrangler TJ. I believe the car's computer has a battery that is a dead (like a watch battery). For some reason when it stalls or when ...
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1993 Mustang dies at idle in extremely cold weather
So we've had some mornings dipping down below 5deg F recently here in WI.
The good: my stripped-down 1993 Mustang starts, can run, and drives just fine in this weather. This is the 2.3L N/A, with an ...
- 567
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2
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is there any way to adjust my idle speed - 2003 Cadillac CTS
My 2003 CTS vibrates pretty bad at idle speed (around 600 RPMs) But If I rev up to 800 or so, it's totally smooth.
The real problem is partially due to worn motor mounts, but I dont want to spend $...
- 123
2
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3
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Brand New 2018 Hyundai Sonata with rough idle
I have a brand spanking new 2018 Hyundai Sonata that as soon as I drove it off the lot I noticed it idles rough. Not horribly, but very noticeable. Not only do the RPM's drop a little but you can ...
- 123
2
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1
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Black water from exhaust, cylinder misfire and rought idle
It is a Skoda Fabia 2006, petrol, 3cylinders 1.2L.
Main problem:
Rough idle.
Misfire at random cylindners.
Steam, Water and black carbon from exhaust. (I'm sure it is not normal).
Undrivable.
...
- 276
2
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1
answer
975
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Mitsubishi eclipse convertible 2008 shaking problem
I have a Mitsubishi Eclipse 2008 has 96,000 mile .
When I drive, it doesn't really shake but when I stop at red light and the Geralyn drive it shakes a lot I have checked all the engine mount and the ...
- 23
2
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1
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41
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Manual car engine rpm dropped below idle rpm while in neutral
My car is 2007 Toyota Prado GX manual with the D-4D engine. I was waiting for green light so I put my gear in neutral. After about 1 minute the engine rev dropped below the idle rpm by a lot so it ...
- 21
2
votes
1
answer
199
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Leaking fuel injectors on Buick 3800 SFI engine
My 1993 Buick LeSabre 3800 seems to have one or more leaky fuel injectors. During idle, especially when fully warmed up, it idles chuggy, like extra rich or flooding. If I shut it off during idle, it ...
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1
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What can be the reason for rough idle after engine oil change on petrol cars?
I own a L12B Honda Fit/Jazz. I have never felt roughness at idle during my 6 months of ownership. I had oil change yesterday where they drained and filled Honda Recommended Synthetic Oil.
My ideal ...
- 171