Question about 1997 Ford F150 Regular Cab

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Check engine light I changed egr valve new gas cap new spark plugs and wires last year the check engine light still says on

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Do you have a code or a mis fire cause the coil packs have a tendacy to go but the code will tell which cyl or which sensor to start with most parts stores lately will have a scanner to tell a code

Posted on Jul 31, 2010

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How to fix 1988 chevy 305 that won't idle or take fuel?


Are the spark plug wires in the correct locations. .. you verified spark and that it has enough gas pressure correct?

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P0303 Flashing Service Engine Light when driving


P0303 ignition misfire on cylinder #3.
Possible Causes:

1.Fuel injectors, related wiring, sensors, computer issues
2. Running out of gas, or poor fuel quality
3. Evaporative emissions system (EVAP) concerns: fuel vapors leaking into engine
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You will have diagnose each element until you find root cause.
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Replaced engine coil, drove for 50 miles and check engine light starts flashing along with the motor running very rough unless my foot was on the gas petal, replaced EGR valve and still doesn't want to...


cap ,rotor ,spark plug wire , spark plug could misfire....
the check engine light flash because it's a severe misfire and fuel go to converter catalyst.

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My 01 4.3 vortec blazer starts stumbling when at red lights and stop signs any suggestions


Could be the EGR valve or the idle adjust valve. Check Engine light on? Any codes?

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I have a 1994 gmc 1500 sierra 5.7 liter v8 truck. Ive change the egr valve spark plugs wires distributor cap. It runs good on the highway no studdering in the engine at all. But at times it may miss a...


Hello: You might check the dist cap and rotor for white powder corrosion. Check the spark plug wires. Make sure wires are not against metal. If you load up the truck does it miss?

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1996 Honda Accord Rough Idle Even After tune up performed Changed spark plugs, distributor cap and rotor wheel along with all spark plug wires, changed fuel filter, air filter, spent $150 on fuel injector...


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

Mar 02, 2010 | 1996 Honda Accord

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96 grand prix is surging and stalling. I have replaced the fuel pump within the last year, the EGR, the IAC, had the throttle body cleaned, and new plugs and wires. The check engine light comes and goes...


Get a free code at AutoZone or some other place. It could be one of the many sensor problems. Especially the idler sensor or Map, Maf, and on from there.

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99 Daewoo Leganza DTC P0301


When the misfire monitor detects a misfire, it will trigger the check engine light with the specific cylinder number as the last digit in the P030X code. For instance cylinder 1 misfire is P0301, cylinder 2 is P0302 etc.

The misfire detection monitor, a software strategy built into the computer, is designed to detect an engine misfire. The computer can also normally identify the specific cylinder in which the misfire has occurred. A misfire is nothing more than a lack of combustion, which can be caused by poor fuel quality or metering, low compression, lack of spark or unmetered air entering the engine. There are other possible, less obvious causes as well, such as uncommanded Exhaust Gas Recirculatin (EGR), flow.



P0301:

Possible Causes:
Fuel injectors, related wiring, sensors and computer issues
Running out of gas, or poor fuel quality
Evaporative emissions system (EVAP) concerns: fuel vapors leaking into engine
Incorrect Fuel Pressure
EGR system concerns: leaking EGR valve or restricted ports
Base engine concerns: low compression, valve train problems and timing issues
Ignition system concerns including, but not limited to:
Faulty spark plugs
Faulty coil or related wiring
Ignition module or related wiring issues
Ignition related sensor faults or wiring issues

P0302:

Possible Causes:
Fuel injectors, related wiring, sensors and computer issues
Running out of gas, or poor fuel quality
Evaporative emissions system (EVAP) concerns: fuel vapors leaking into engine
Incorrect Fuel Pressure
EGR system concerns: leaking EGR valve or restricted ports
Base engine concerns: low compression, valve train problems and timing issues
Ignition system concerns including, but not limited to:
Faulty spark plugs
Faulty coil or related wiring
Ignition module or related wiring issues
Ignition related sensor faults or wiring issues

Apr 02, 2009 | 1999 Daewoo Leganza

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