Questions tagged [rough-idle]

Questions about troubleshooting and solving rough idle problems

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2
votes
1answer
1k views

Squealing and uneven idle, then tachometer drops to zero but engine keeps running

When I start my car, a belt seems to slip and then the tachometer reads zero RPM but the engine keeps running, but has weak power and only runs at low RPM. Any idea what's going on? The Symptoms: ...
4
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2answers
8k views

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 ...
1
vote
2answers
6k views

Suzuki Swift Bad Idle

I am having trouble with my Suzuki swift`s bad idle 2009 (Engine M13A - Transmission Manual ). The original problem was when i left the clutch in first gear to start from a stand still the rpm ...
2
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1answer
2k views

2010 Nissan Sentra - Idling rough in reverse, occasionally stalls when stopping

Been having an issue with my 2010 Sentra where the idle in reverse is very rough and has very little power. As well when making abrupt stops in drive the car will occasionally stall, but start back ...
4
votes
2answers
3k views

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 ...
5
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2answers
1k views

Does this harmonic balancer / crankshaft pulley look damaged?

Does this harmonic balancer / crankshaft pulley look damaged? To me it looks like the rubber between the inner and outer parts is at least cracked if not completely separated.
0
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2answers
1k views

Bike's rpm increases after short ride

My bike's rpm increases after a short ride of 5 kms such that it moves forward even if the throttle is in its resting state. I know there is a throttle movement adjusting nut but not sure should I ...
8
votes
1answer
2k views

Rough idle only under load

I'm going to describe the symptoms with a very short history, some preliminary theories ( based on past work I've done on this car ), the data I've gathered and what, if any, conclusions I might draw ...
2
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0answers
142 views

How stable should the camshaft frequency be?

I just got my first oscilloscope ( Hantek 1008C ) and I was looking at the camshaft signal on my 98 Mazda 626 GF 2L. It uses a two wire sensor. There is a single bump on the face of the camshaft ...
1
vote
1answer
178 views

Honda dirt bike with clone engine lots of problems

So I have a 110cc Honda trail. It has been getting colder where I live and my bike has been acting funny. first problem: At FULL throttle it starts to sputter and crackle. The second problem: does ...
1
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0answers
1k views

Intermittent low idling 2007 Civic

First time posting. Got an intermittent low and rough idle on my 2007 Honda Civic LX. Will generally only idle low and rough for a stop light or 2 then things will relatively go back to normal. I've ...
1
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0answers
617 views

honda crv 98 idle too low and rough and eventual stall but ok when driving

(Excuse my english) My dad gave me a '98 honda crv. since it came from being serviced after an oil pump failure, it has no power when it's cold I have to press the gas until the engine warms up. I ...
4
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2answers
9k views

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, ...
2
votes
1answer
1k views

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 ...
2
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0answers
182 views

2005 Saturn Ion running rough after running for 30 minutes

My 2005 Saturn Ion starts and runs great for about 30 minutes or so, then it starts running rough like the mixture is too rich. I have to let it sit for an hour or two and then it cranks and runs ...
1
vote
1answer
6k views

Rough Idle Only When in Drive with AC On

I have a 2010 Ford Escape and for a few years I've noticed that when the AC is on, the car idles very rough when in drive. If it's in park or neutral and the AC is running it's as smooth as silk. ...
2
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0answers
37 views

2002 Nissan Quest breaking down

I was given the vehicle after it had sat for over 7 months. It sat with 3/4-1/2 a tank of gas. It was not cranked once. It is now idling and running very rough. It doesn't want to accelerate and when ...
2
votes
1answer
1k views

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 ...
2
votes
1answer
17k views

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. ...
1
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0answers
99 views

Jeep Grand Cherokee 1996 limited model - lack of power while sudden accelerating

Hi I have Jeep Grand Cherokee 1996 limited model - the problem is engine misfire in idle while cold starting and engine stady (not fully stady) after become hot, and lack of power while we accelerat ...
2
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0answers
483 views

Subaru Legacy 91 idle issues

Video going over issues: http://webm.land/media/8vlo.webm Started having issues a while ago with some fairly extreme shaking and surging while at idle (including cold starts). To try and resolve this ...
2
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0answers
173 views

1973 F100 360 FE 5.9L Stalls when put in gear

I've got a 73 F100 with a 360 FE and a C6 transmission. It idles fine but stalls when put in gear, with somewhat of a jump. New holley carb on it. Any idea why? I've also notice the idle speed going ...
2
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0answers
2k views

Sudden Random Misfire and Stalling RX300

Preface: This is my sister's car, so I was not there at the moments leading up to it misfiring and stalling, but I'm the one who gets to fix it. It's a '99 Lexus RX300, and about a month ago I ...
2
votes
1answer
7k views

Toyota Vitz rough idle

I have a 2005 Toyota Vitz with a 1KR-FE engine. When idling, there is a rough idle from time to time when the car is in Park, Neutral or when stopping in traffic, with vibrations shaking the car. The ...
9
votes
2answers
670 views

Solstice! Car starts to run rough after hitting the gas, intermittently.

So, after putting the A/C-delete belt on to take my POS A/C compressor out of play, everything works great: No frightening rattle / clanging from the engine bay Idles smooth Sounds like a brand new ...
4
votes
3answers
3k views

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 ...
6
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1answer
2k views

Do I have a fuel pressure or injector problem Part 2

This is a continuation of my previous fuel pressure / injector question. So the missing part for my fuel pressure gauge came in and I was able to do a few more tests. The first thing I think is that ...
2
votes
1answer
13k views

Engine running rough and a “Service StabiliTrak” message after vehicle has been sitting, why?

My 2013 Camaro 2LS has been sitting in my garage without being driven daily for about a month now, maybe longer. I have only driven it in my driveway to move things around in my garage. The last time ...
2
votes
1answer
1k views

Mazda 3 really bad idle related to fuel pump

My Mazda 3 has suddenly been having rough idle issues. I have noticed that since yesterday, when my car is in idle it revs from the idle rpm(not sure if its 700-850rpm) to 1000 rpm then back again ...
3
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0answers
2k views

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 ...
5
votes
1answer
5k views

Car engine vibrates vigorously with air conditioning on at idle speed

My Toyota e80 sedan 4 doors having problem when the idling speed was set at 900 rpm. The engine will vibrates when air conditioning turns on and the engine rpm drops to 700 rpm. I need to depress the ...
8
votes
3answers
14k views

Astra MK6 - when warm, rough idle and shudders while accelerating

Here's a video: https://youtu.be/wYyaW9wRt6U For a couple of months now my car has had a rough idle and shudders while accelerating - Vauxhall Astra J Exclusiv MK6, 4 years old 61k miles spark plugs ...
7
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2answers
3k views

Rough idle problems on 93 Miata

The engine idles fine when cold then drops to about 800 and I have no problems at all except maybe inconsistent idle (goes up and down but not by much) although when I turn off the engine and then ...
1
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0answers
133 views

Rpm falls below idle when declutching at high rpm

I've got this problem that I can't find the cause of. When starting the engine, which goes very easily, it idles smoothly and stable, rising the rpm a bit still gives no problems. But when driving at ...
2
votes
0answers
1k views

Car engine stutters when hot, and sometimes stalls

My car (Suzuki Swift 1999, engine G10A 1.0) stutters and jerks when hot, after driving for like 10 to 15 minutes the problem arise. The strange thing is that when this happens and i turn off the ...
5
votes
2answers
2k views

ford focus 2002 low idle problem varying

I have a ford focus 2002. It has an idle problem. At a stop the idle will vary from normal down to about 500 RPM, almost stalling. It does this variation very cyclically, every 5 seconds or so. ...
2
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0answers
178 views

2007 Mercury Mariner - Car is shaking and whining.

Today my car starting shaking and whining very badly, but only when I'm stopped and the car is in drive. If I put it in park or neutral the vibration stops. The shaking stops as soon as I start to ...
4
votes
0answers
150 views

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 ...
5
votes
2answers
8k views

Why is my car missing, surging, shaking and rpm's idling radically

1999 Toyota Camry 2.2 automatic Car is trying to die. RPM's are jumping from 1-5. Only way to accelerate is very slowly when it starts to buck. Have replaced fuel filter, air intake molded piece,...
3
votes
2answers
2k views

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 ...
4
votes
1answer
5k views

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 ...
7
votes
2answers
2k views

1996 Chevy K1500 Silverado ZZ4 5.7L - Rough Idle, Plug Damage, Overheating, EGR

I'm having some serious problems with my truck. It started out as rough idling and then it got worse. I have replaced all 4 O2 sensors, temperature sensor, knock sensor, distributor wires, ...
1
vote
0answers
695 views

Chevy Silverado Fuel Pressure Is Erratic With Rough Idle Only When In Gear

I have a Chevy Silverado 2500 with the 6.0L engine and it has been idling rough. When I put it in gear the RPMs start fluctuating and the truck wants to stall out. Once the truck is running down the ...
5
votes
3answers
810 views

2002 Jeep Grand Cheerokee Laredo hesitate/jerking + multiple CEL codes

I have a 2002 Jeep Grand Cheerokee Laredo 4.0. I don't know much about cars, and recently had bought this Jeep off of a private owner that had said it had no problems but now after owning it for 2 1/2 ...
3
votes
1answer
36 views

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 ...
3
votes
2answers
371 views

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,...
5
votes
1answer
51 views

Idle doesn't hold on 2006 Toyota pick up truck after giving a jump, actually failing to give a jump.

We have a 2006 toyota pick up truck and a 2000 mustang with a dead battery. Cable's have been Properly connected. 1, I can get no current flow, no jump from the toyota, yet it starts the pick up ...
7
votes
1answer
56k views

Why does my engine vibrate at idle only when I have the AC on?

2001 Honda Civic EX First noticed this problem when I got the car about a year ago. When the car is idling without the AC on, all is good. When I turn the AC and the clutch engages, it begins to ...
6
votes
2answers
13k views

Rough idle + slow acceleration + engine dying after spark plug change

I recently changed the spark plugs and wires on my 2002 Ford Focus SE with Zetec (DOHC) engine. I used NGK TR5IX (7397-4PK) Iridium IX plugs and Motorcraft wires. When I received the plugs, they were ...
3
votes
2answers
3k views

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 ...