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Re: check engine light on
Take your car to your local Auto Zone or Advanced Auto and they will pull your codes that are causing the check engine light to come on. They will do this for free. Let me know what the codes are and we will figure out what is wrong.
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Hello, Were the coils changed? Perhaps the wrong wire was put on the wrong plug. You need to somehow scan the engine to find the defect and to clear the computer. It sounds like the engine is trying to fire when the piston is in the wrong place.
If you did not have any work done yet, then the spark from the bad coil is going somewhere else and firing a cylinder out of time. This can happen when the sparks jump. You can temporarily use cardboard as an insulator around a plug to keep the spark from jumping. The cardboard will burn from the heat, but in testing it will identify an open wire.
I have a 1998 Sunfire/ son warp the Head by not finding a leak that was the water pump. had head grounded down and reconnected. now i get a PO300 and it a misfire random. took the Ignition coil/ignition control madule to a shop and was test 3 times, first time it showed it failed , they did two more test on it and it passed. At night i turn off all the lights in Garage and sprayed a fine mist of water over the spark plugs and saw some flashing , not much very light on a couple of plug wires. Any one have an idea of what it may be . thanks for reading and i hope someone can give me a good idea thanks again
Water in spark plug holes in heads!!!!! Spark is jumping through coil plug boots. Remove coil pak and dry boots, blow compressed air to dry out spark plug holes. they go straight down from fue rail. Good luck with the passenger side by fire wall. its a tuffy
Aloha We have just replaced all of what you have replaced, plus water pump, fuel pump, pcv valve and 02 sensor. Took it to mechanic today we had misfire on 1,2,6,7. Mechanic said that the 99 dodge is known for bad computers, he checked ours and works great turns out that it was the coil. Ours was jumping 1/4 inch and had a orange/yellow spark. it is supposed to have a 1 inch spark and be blue. This has solved our problems after 527 dollars later.
Check the coil!
this maybe caused by no fuel or faulty fuel pump, ignition coil, wire and plug crank position sensor. first check for spark by removing on spark plug wire and put a spark plug in the spark plug wire boot, donot touch the plug only the boot have someone crank the car over. if you see spark, that part of the ignition is good. if not, check the coil resistance if should 40 to 80 ohm with a volt meter pf not replace. if ok, but no spark check the igniton control madule make sure the coil and module are receiving current. if not check the fuse that feels them. if it is ok, check distributor cap and rotor. if rotor and cap are fine, check for fuel at either the fuel filter, the fuel return line or removing some spark plug and see if they are wet. if there is no fuel check the fuel pump and the fuse and relay that control the pump. if there is fuel with high pressure but there is no spark, check the crank sensor for signal with a volt meter while cranking the vehicle