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I have a theory if the plug intaller didnt change the wires its possible that the wires could have separated internally at the boot contact when they got pulled, it could have been fine for a while, spark jumping the gap , then corrosion/erosion could be causing intermittent spark as it tries to jump , now showing up now as a misfire
Check Engine Light Flashing >> Flashing Check Engine Light Carmd

Check Engine Light Flashing >> Flashing Check Engine Light Carmd

When the engine light is flashing it means you are doing harm to the catalictic convertors which are very expense for those truck and have a chance of plugging up and cause your truck to run like a bag of crap.
Check Engine Light Flashing >> Why Is My Check Engine Light Flashing And Car Shaking

Check Engine Light Flashing >> Why Is My Check Engine Light Flashing And Car Shaking

All new vehicles come with an on-board diagnostics port which hooks up to the vehicle's computer. Whenever the vehicle detects that something may be wrong--whether it's an emissions-related problem, cooling system issue, engine problem or something as simple as a loose gas cap, in some cases--the Check Engine light will appear.
Check Engine Light Flashing >> The Check Engine Light Demystified Yourmechanic Advice

Check Engine Light Flashing >> The Check Engine Light Demystified Yourmechanic Advice

when i get up to around 5000 rpm(downshift passing 4l60e) the check engine light flashes for about 20 sec then goes off.. bugging the hell out of me, other wise ...
Check Engine Light Flashing >> A Blinking Engine Light Means Now

Check Engine Light Flashing >> A Blinking Engine Light Means Now

The check engine light illuminates when your vehicle's computer believes there is a problem that could affect — or is affecting — your car's emissions control system.
Check Engine Light Flashing >> What It Means When A Check Engine Light Flashing Automotive Ward

Check Engine Light Flashing >> What It Means When A Check Engine Light Flashing Automotive Ward

Note that the Check Engine Light (CEL) is also referred to as the Malfunction Indication lamp (MIL) in some documentation. If the CEL) remains on during normal operation then the ECU has detected a possible fault.
Check Engine Light Flashing >> Flashing Check Engine Light Ricks Free Auto Repair Advice Ricks

Check Engine Light Flashing >> Flashing Check Engine Light Ricks Free Auto Repair Advice Ricks

Your “Check Engine” light comes on when your car’s onboard computer (or PCM, Powertrain Control Module) records some kind of problem. This onboard computer runs your car so that it has optimum fuel economy and low emissions.
Check Engine Light Flashing >> What It Means When A Check Engine Light Is On Or Flashing Axleaddict

Check Engine Light Flashing >> What It Means When A Check Engine Light Is On Or Flashing Axleaddict

I’m not at all what you would call a car guy, but that’s exactly why I decided to write an article on this topic. As someone who knows little about cars, and has seen the check engine light come on in his cars more than a few times over the years, I’m starting to become something of an expert on this problem.
Check Engine Light Flashing >> Engine Tune Up Machanic In West Jordan Ace Auto Repair

Check Engine Light Flashing >> Engine Tune Up Machanic In West Jordan Ace Auto Repair

Flashing check engine light. - I had my fuel injectors and spark plugs changed last month due to a check engine light and code saying that I had a cyli...
Check Engine Light Flashing >> Why Is My Check Engine Light Flashing Obd Advisor

Check Engine Light Flashing >> Why Is My Check Engine Light Flashing Obd Advisor

A malfunction indicator lamp (MIL), or check engine light, is a tell-tale that a computerized engine-management system uses to indicate a malfunction. Found on the instrument panel of most automobiles, it usually bears the legend check engine, service engine soon, or a pictogram of an engine - and when illuminated it is typically either an amber or red color.
Check Engine Light Flashing >> Check Engine Light What Does It Mean Motorist

Check Engine Light Flashing >> Check Engine Light What Does It Mean Motorist