Question about 1989 Buick Park Avenue

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Multiple misfire at low rpm (below 1000) runs very rough in this range

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  • honeymokey
    honeymokey May 11, 2010

    Is the check engine light on?

  • honeymokey
    honeymokey May 11, 2010

    Check for vacuum leaks. Check engine light on? Codes?

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Try replaceing the ignition module sometimes these short out. I have a 89 BPA and two of my cylinders weren't running because of this..

Posted on Aug 16, 2009

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1 Answer

Codes PO300-PO305 TCS and emission lights on, runs OK except sl rough at lower speeds


you have multiple misfire po300 and cylinder 5 po305 misfire.the misfire is causing the rough running.The computer has disabled your traction control.You either have carbon in the EGR which simulates a vacuum leak,bad spark plugs,a leaking intake manifold,or low fuel pressure from a bad pump or clogged filter.
i would start with the spark plugs and fuel filter

Apr 21, 2015 | 2001 Honda Odyssey

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Multiple misfire code on 2003 dodge 2500


Please describe symptoms when possible. Won't start, running rough etc. Keep in mind, multiple misfires can very well be a result of low fuel pressure.

Mar 08, 2015 | Dodge Cars & Trucks

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What is code p0300?


P0300 - Random, Multiple Cylinder Misfire Detected Fault Code Definition
  • Random, Multiple Misfire Detected
Symptoms
  • Check Engine Light flashing
  • Rough running, hesitation, and/or jerking when accelerating
  • In some cases, there may be performance problems, such as dying at stop signs or rough idling, hesitation, misfires or lack of power (especially during acceleration), and a decrease in fuel economy
Common Problems That Trigger theP0300
  • Worn out spark plugs, ignition wires, coil(s), distributor cap and rotor (when applicable)
  • Incorrect ignition timing
  • Vacuum leak(s)
  • Low or weak fuel pressure
  • Improperly functioning EGR system
  • Defective Mass Air Flow Sensor
  • Defective Crankshaft and/or Camshaft Sensor
  • Defective Throttle Position Sensor
  • Mechanical engine problems (i.e.-low compression, leaking head gasket(s), or valve problems

Jul 25, 2014 | 2000 Dodge Durango

1 Answer

RUNS ROUGH AT MID RPM


Need to be more specific here. Runs rough...like misfiring? or vibrating excessively at about 1500, and again about 3000 rpm? If it's the latter, chances are your engine's balance shaft is not timed correctly. This causes a heavy high-frequency vibration/buzz throughout the car, at the aforementioned rpm ranges. If it's more like a misfire/stumble, look into your ignition system, or possibly a sticking EGR valve. (This will cause a mild surge/bucking under light accel, peaking between 45-50mph. Good luck!

Apr 07, 2014 | 1997 Honda Accord

2 Answers

Rough idle problem


hot or cold. or both
what is RPM at rough idle, too low,, below 800 rpm?
its misfire, do a tune up.

Jan 06, 2014 | Toyota Cars & Trucks

1 Answer

I have a 2008 mercury Milan with nearly 60k miles on it. When I come to a stop the rpm drops by 1000 then recovers quickly. What should I do to fix the problem? Any suggestions will be greatly appreciated.


Check out related help links to troubleshoot these problem:----Click the link below:---Idles Fine but RPM jumps in drive mode? http://technoanswers.blogspot.in/2012/07/idles-fine-but-rpm-jumps-in-drive-mode.html
---------Mitsubishi Lancer rpm needle bounces? http://technoanswers.blogspot.in/2012/02/mitsubishi-lancer-rpm-needle-bounces.html
--------How to adjust rpm on 2009 dodge charger SRT8?


http://schematicsdiagram.blogspot.com/2011/12/how-to-adjust-rpm-on-2009-dodge-charger.html
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Engine cuts out at 3000 RPM? http://schematicsdiagram.blogspot.com/2011/12/engine-cuts-out-at-3000-rpm.html

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Cold start problem and vehicle shudder around 2500 to 3500 rpms
http://repairhelpcenter.blogspot.com/2012/10/cold-start-problem-and-vehicle-shudder.html

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High rpm in neutral? Inconsistant high RPM in neutral? http://technoanswers.blogspot.in/2012/02/high-rpm-in-neutral-inconsistant-high.html

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Jetski Sputters and Low RPM? http://whatisbyme.blogspot.in/2012/07/jetski-sputters-and-low-rpm.html

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Fuel Injection Problem And RPM suddenly increases http://whatisbyme.blogspot.in/2012/07/fuel-injection-problem-and-rpm-suddenly.html

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2005 Toyota Highlander: Engine runs hard RPM below 3000? http://whatisbyme.blogspot.in/2012/05/2005-toyota-highlander-engine-runs-hard.html

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1987 Toyota Camry: RPM Drops going Up hills? http://whatisbyme.blogspot.in/2012/05/1987-toyota-camry-rpm-drops-going-up.html

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Cruise Control stops working, Excessive cranks to start the engine and RPM goes max 2500 http://whoisbyme.blogspot.in/2012/07/cruise-control-stops-workingexcessive.html

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1990 Toyota 4Runner: Engine cuts off when reaches 2000 RPM?


http://whatisbyme.blogspot.in/2012/05/1990-toyota-4runner-engine-cuts-off.html

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1999 Toyota Camry: Erratic stalling and high engine RPM at idle?


http://whatisbyme.blogspot.in/2012/05/1999-toyota-camry-erratic-stalling-and.html

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1995 Toyota LS: Misfire at idle or low RPM http://whatisbyme.blogspot.in/2012/04/1995-toyota-ls-misfire-at-idle-or-low.html

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Lexus RX: Tapping noise under Valve Cover At Low RPM? http://technoanswers.blogspot.in/2012/04/lexus-rx-tapping-noise-under-valve.html

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These will help.
Thanks.

Nov 22, 2012 | Cars & Trucks

2 Answers

Got a p0300 and a p0316 code on my 03 navigator it is running rough and losing power


CODE PO300 - RANDOM MISFIRE DETECTED. POSSIBLE CAUSES ENGINE HAS A MECHANICAL FAULT.CLOGGED OR FAULTY FUEL INJECTORS.FUEL PRESSURE TOO LOW OR HIGH FUEL SUPPLY CONTAMINATED.EVAP CANISTER FUEL SOAKED.EGR VALVE IS STUCK OPEN OR THE PCV VALVE SYSTEM HAS A VACUUM LEAK.COULD HAVE FAULTY IGNITION COIL OR BAD SPARK PLUG. MAF SENSOR CONTAMINATED IT CAN CAUSE VERY LEAN FUEL CONDITIONS. CODE PO316 - MISFIRE IN THE FIRST 1000 REVOLUTIONS

Aug 29, 2011 | 2003 Lincoln Aviator

1 Answer

Engine misfire first 1000 rpm, engine flooding out, check engine light is on but flashes when in motion, scanner shows system too lean bank 1 and 2. shows multiple cylinder fault codes.. (FORD F-150...


my 2002 ford f150 4.2 would not hold idle so we changed the fuel pump and fuel filter and relay now the truck starts holds idle runs good at low rpm but when i stomp it it runs then stalls and picks up again.

Dec 05, 2010 | 2002 Ford F150 Regular Cab

1 Answer

Random multiple misfirings


Here is a list of possible causes. You should not drive the vehicle if the check engine light is flashing all the time, you can cause even more damage. It could pay to have a professional find the real cause.

Spark plugs that are incorrect for the application, cracked, improperly gaped or worn can cause the engine to misfire or run rough at all times.
An IC module that failed to correctly control the ignition coil(s) will cause the engine to misfire or run rough at all times.
Poor connections, broken wiring or wiring that has shorts to ground can cause the engine to misfire or run rough at all times. NOTE: Check connectors that might be pulled apart as the engine flexes or wires that short to ground as they pass near brackets or shorts to ground on the exhaust manifold.
Fuel injector(s) that are shorted, plugged or partially restricted can cause the engine to misfire or run rough at all times.
An ignition coil(s) that has low output, corrosion on the coil tower(s), is carbon tracked or arcs to ground will cause the engine to misfire or run rough at all times.
A PCM that failed to properly control the injector or ignition timing will cause the engine to misfire or run rough at all times.

Feb 02, 2009 | Saturn SL1 Cars & Trucks

1 Answer

2002 cadillac escalade ext misfire, shifting problems,


change spark plugs,check for valcum leaks. multiple misfire is spark plugs,coil or wires

Jan 04, 2009 | 2002 Cadillac Escalade Ext

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