Question about 1999 Honda Accord

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CRX Si rough idle

I have a 87 CRX with fuel injection. The engine idles fairly rough. I have set the idle to 1000 rpms because of the vibration at lower levels.
The car shows 256k miles and I was told by previous owner that the engine was rebuilt at one time.
A leak down compression test showed only 135 to 145 compression for the cylinders.
I just replaced the fuel injectors because a couple were leaking and I still have the problem.
The spark plug wires, plugs, air filter, rotor and cap have been replaced.
The tach also jumps at times ....I don't know if there is a correlation.....
The car accelerates fine.
Any idea what might be causing this?

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6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

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jimbopickens
  • 56 Answers

SOURCE: Starter cranks doesn't start quick clicking & ECU flashes quickly

It sound like you have a bad starter solenoid.
It clicks like crazy and will not engage the starter if it is bad or going out!

PLEASE RATE THIS SOLUTION! Thank You Very Much!

Posted on Nov 25, 2008

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jjjhandyman
  • 145 Answers

SOURCE: 1990 honda crx si, 1.6 transmission

No dipstick...you verify by havin car first on level ground then.Then when on stable ground remove the 17mm filler plug on upper passenger side of transmission.if fliud flows out of filler plug than level is fine.if does not flow out whenplug removed.RECOMMEND STRONGLY using a honda brand manual transmission fluid in this transmission..it does wonders for shifting or gearing issues.

Posted on Sep 13, 2009

  • 77 Answers

SOURCE: 1996 Honda Accord Rough Idle Even After tune up

Perform a valve clearance inspection and adjust if necessary. Tight or sticking valves will cause a misfire or rough running concern. Note: Perform valve adjustment when the engine is stone cold. 4cyl: INT 0.26mm EXH: 0.30mm (V6 engine are hydraulic and no adjust necessary.) Also check for a sticking or stuck open EGR valve. For diagnostic purposes only: Remove the EGR valve. Place a business card over the EGR passage and bolt the EGR valve back on. This plugs the EGR ports and if the misfire goes away the EGR valve is partially stuck open and is defective.
Check for low fuel pressure. Check for low compression. Check cam timing. Check for a weak ignition coil. Also don't over look the possibility of worn or broken engine mounts which cause excessive engine movement and engine vibration. -hope this helps

Posted on Mar 05, 2010

  • 280 Answers

SOURCE: My 1989 Honda CRX SI surges.

idle control or thottle position sensor

Posted on Mar 24, 2010

HondaCRX
  • 252 Answers

SOURCE: My 1989 Honda CRX SI surges.

It's called hunting. You need to clean out the EAVC unit in the intake manifold. Take off the air filter and housing, run carb cleaner through the intake for 20 minutes or so.

Next bleed the radiator by taking the rad cap off and start the car, let the fan kick in twice (about 20 mins again) and the air bubbles will have been forced out.

Take the car for a spin and the vote for me when it's fixed :)

Posted on Jun 24, 2010

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Rough idle in drive, correct rpm


Car idle is rough Inspection Service & Cost A rough idling engine can be caused by a number of issues, some of them are serious while others tend to be minor, but the symptoms remain pretty much the same. The car will feel rough and bouncy when the engine is running. The car will also idle below its regular speed, display inconsistent RPMs and may produce a shaking, skipping or slipping sound when the vehicle is running.
While a rough idling engine may seem to be a simple inconvenience it often indicates a deeper problem within the engine. The vehicle should be inspected and repaired as soon as possible because small problems have a way of turning into expensive repairs. How this system works: The idle speed of an engine is basically the rotational speed the engine runs on when it is un-coupled from the drivetrain and the throttle pedal is not being depressed. The idle speed is measured in the revolutions per minute of the crankshaft.
When an engine is running at idle speed it generates enough power to smoothly operate equipment such as the water pump, alternator, and power steering but not enough power to move the vehicle itself. A passenger car will usually idle between 600 RPMs and 1000 RPMs. A properly functioning idle should run smoothly without skipping or slipping. Common reasons for this to happen:
  • Dirty Fuel Injectors: The fuel injection system injects fuel into the cylinders, which creates a mix of air, and fuel to ignite and burn. Fuel injectors have tiny nozzles to spray the fuel into the cylinder and they can become clogged over time. clogged or failing fuel injector creates a lack of fuel in the vehicle's engine. This can cause a rough idle, it can also cause symptoms such as slow acceleration or the car not feeling as if it has enough power. If the problem is addressed early, it is possible to clean the injectors, which will restore them to full function. If this condition is not addressed in a timely manner the injectors will need to be replaced. Incorrect Idle Speed: While the average idle speed falls between 600 to 1,000 RPMs, if your vehicle is experiencing a rough idle it could be due to an incorrect idle speed setting. A trained mechanic can easily adjust the idle speed, and it should stay at the proper speed. If an adjusted idle speed becomes inconsistent or changes at random intervals there may be a bigger problem that needs to be explored. Vacuum Leak: If the vacuum system has a leak, it can seriously affect the ability of the vehicle's computer to regulate the air to fuel ratio. This can lead to a rough idle and if the problem is not addressed the car may experience slow acceleration and a lack of power. Vacuum leaks should be inspected and repaired immediately. Incorrectly Installed or Damaged Plugs: Spark plugs are responsible for creating the spark that allows the vehicle to burn fuel. If spark plugs are improperly installed or malfunctioning, the idle speed can be affected. The vehicle's engine may vibrate or there may be slipping or straining sounds coming from the engine. Defective or Clogged Fuel Pump: A rough idle can be related to fuel delivery issues. The fuel pump, which is responsible for pulling fuel from the gas tank to the fuel injectors, can become clogged or defective. If this happens the engine will not get enough fuel, which can cause a rough idle, sputtering, stalling and even slow acceleration. Clogged Fuel Filter: A clogged fuel filter can cause similar problems. The job of the fuel filter is to screen out contaminants in the fuel, over time it will become clogged and need to be replaced. A rough idle is one symptom of a clogged fuel filter. Failing Electrical Components: A problem or failure in the ignition system or various electronic components can cause a rough idle. If this is the case, the problem will usually get worse as RPMs increase. Common culprits include the ignition control module, plug wires, coils, and spark plugs. Defective Airflow Sensor: A defective airflow sensor can be responsible for a rough idle. A mass airflow sensor detects the amount of air coming into the fuel injection system and sends that information to the vehicle's computer. The computer uses that data to deliver the proper amount of fuel to the air in the vehicle. Over time these sensors can malfunction or become dirty. One of the first symptoms of a malfunctioning airflow sensor is a rough idle. The car may also accelerate slowly and even stutter or stall as the problem progresses. Dirty Oxygen Sensor: Oxygen sensors measure how rich or lean the gases are as they exit the combustion chamber. Depending on the results, the amount of fuel entering the engine is adjusted by the vehicle computer. The ultimate goal is to maintain an ideal mixture that produces the lowest emissions. A dirty or failing oxygen sensor will usually trigger the check engine light and can lead to a rough idle, lower fuel efficiency and failed emission test.

Sep 28, 2016 | AC Cars & Trucks

1 Answer

02 chevy trailblazer Vibration


oh,, we'll need some more information to be able to help, The thing is you didnt specify what vibrates for example when you start and you have vibrations while idiling, while in drive and the engine kicks back rough when changing gears more than likely its and engine mount thats bad. if its vibrating while idling its the fuel rpm ration (idling screw that needs adjusted or the MAP or air sensor if its fuel injected).. If its vibrating while the ac is turned on, check the ac step-up solenoid (the switch that increases the idling speed to match the ac's needed power.) we'll love to help or point you in the right direction but we'll need some more information. Describe whats happening for us , because we cant be there in person to actually experience it our selves. If you have a vid of the engine while vibrating etc all of that will be beneficial.

Dec 27, 2012 | Cars & Trucks

1 Answer

Car wont idle


There re few possibilities that can cause no idle issues.To troubleshoot the issue help links are provided below.Click the link below:---
Idle Problem? http://whatisbyme.blogspot.in/2012/05/2001toyota-corolla-idle-problem.html
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Idles rough and quits when gas pedal is pressed less? http://technoanswers.blogspot.in/2012/01/1999-ford-f-150-idles-rough-and-quits.html-----------
Stumbling and stalling at idle after engine rebuild? http://schematicsdiagram.blogspot.in/2012/03/stumbling-and-stalling-at-idle-after.html

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Cooling fan Shuts OFF and Idle Drops? http://howtobyme.blogspot.in/2012/05/toyota-celica-cooling-fan-shuts-off-and.html

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Rough Idle and Vibration? http://whatisbyme.blogspot.in/2012/05/2006-ford-f150-rough-idle-and-vibration.html

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Steering Wheel Vibrates at Idle? http://whatisbyme.blogspot.in/2012/05/1993-toyota-corolla-steering-wheel.html

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Runs Fine But Idle Is Low? http://whatisbyme.blogspot.in/2012/05/2004-toyota-highlander-runs-fine-but.html

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Vehicle Will not hold Idle? http://whatisbyme.blogspot.in/2012/05/2003-lexus-es300-vehicle-will-not-hold.html

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Engine Idles Rough and Dies? http://whatisbyme.blogspot.in/2012/05/1994-lexus-es300-engine-idles-rough-and.html

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This will help.
Thanks.

Jul 17, 2012 | Cars & Trucks

1 Answer

1987 ford tempo 2.3 Litre fuel injected will idle


this sometimes occurs with age due to egr and intake becoming carbon filled , inturn requireing more vacuum inturn raising rpm to keep up , check all vac lines for poss leaks this will cause prob , to check for leaks crank engine let idle use can of wd40 or starting fluid and spray lightly around suspected area , if rpms raise when u spray then u have found ur leak

Apr 28, 2010 | 1986 Ford Tempo

1 Answer

I have a 90 crx si with a b16a vetec engine in it. I was wondering what kind of engine is in it because it is a swap. the motor number is 1207276? and i have an idleing problem and im pretty sure that its...


A B16A with no number fallowing it is a JDM engine. If it was a B16A1 for example it is a USDM engine. As for the idle problem its probably a tps sensor and if it idles really low rpms you should up the idle at the trottle body to idle at 800 rpms to be safe, To low of a idle will cause bearings to go out and throw a rod.
Lookj at the valve cover if it is a jdm you will know if it is a SIR or a SIR2, SIR has larger font for the DOHC and smaller font for the VTech The sir2 has larger font Vtech and smaller font DOHC. The SIR2 also has oil jets underside of pistons and rods to help lubricate piston rod conections.

Apr 07, 2010 | 1990 Honda CRX

1 Answer

Rough idle. rpms drop. misfire.


try your coil packs they go over your sparks or do plugs first and see what happens do affordable first

Feb 01, 2010 | 2002 Cadillac Deville

1 Answer

1991 Honda Civic - Rough Warm Idle


the idle solenoid

check ignition module on distibutor

Jul 18, 2009 | 1999 Dodge Durango

1 Answer

1997 Civic Lx idles rough and low especially with AC on


It's the extra load on your engine when AC compressor kicks on, and it draws engine rpm down. Your fuel injection system has what is called an "idle air control valve", that is supposed to overcome that and adjust idle up & down automatically as needed according to engine load conditions. I'd say it needs replacement, unfortunately it's a little more expensive than most & will run you about $165. Before you do, if you do, make sure all connections & any hoses running to it are in good shape no cracks, on tight & clean, as that can also cause part to malfunction.

Jul 08, 2009 | 1997 Honda Civic

1 Answer

Idle Speed


You cannot adjust the idle speed, it is a fuel-injected model.

Jul 10, 2008 | 1991 Honda Accord

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