Question about 1992 Chevrolet Cavalier

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Engine has a miss, can't be fixed with new plugs, wires or coil packs, any ideas, it has 242,000 miles on it,

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I would check for plugged fuel injector. also put a vacuum guage on a vac. hose if guage pulsates then a burnt valve or head gasket is the problem

Posted on Apr 30, 2010

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My 1998 Saturn,155,000 miles,began missing. OBD code #3 cylinder misfire. I verified spark to all 4 cylinders. Fuel pump runs. I did compression test. Ok After compression test,engine will not start.


Make sure the battery has a full charge. Sometimes with a lot of testing/cranking, it will run the battery down.
If you still have spark at all the plugs, use a gage and check proper fuel pressure, engine cranking. I've seen fuel pumps that would run, but, wouldn't make good fuel pressure. Also, check fuel injector pulse, engine cranking. Any applicable trouble codes?

Dec 08, 2016 | Saturn Cars & Trucks

2 Answers

Check engine light on engine acts as if missing new plugs wires and #5 spark pack missing again 6cyl 4x4 3.4 185000 miles


was it running this way before you changed the plugs? just a shot in the dark here possibly a defective spark plug, rare but not impossible. if it was running fine before changing them. Other wise I would take it to autozone and pull codes if it is P0350 #5 misfire we would use the process fuel, fire and compression. is there any engine coolant around any cylinders? Have you checked the coil packs? could be a bad coil pack. if no evidence of fluid around them proceeded to check for spark, fuel then compression. post back results or new post with more deductions. iis it no spark no fuel or bad compression.

Dec 25, 2014 | 1996 Toyota T100

1 Answer

My suzuki vitara 20v6 number one plug is not


its a 2.0L V6 called the h20 engine
in some countries, this engine uses a coil pack with 1 coil per
2 cylinders, this magic is called Wasted spark.
some have 3 coil packs for 6 cylinders
others have 1 huge pack with 3 coils inside.
what you have , im totally clueless, (no country stated, dig?)

but no matter, the pack is bad, or the wire that is FINE, is not FINE
no human on earth can test a HV wire, no body.! ( 1 out of 4 sure)
that is fact, (sure if opened) but what about the other modal failiures.
1: insulation breakdown.
2: resistance wrong, (say too high)
3: intermittent.
4: dead open, anyone can test this, its a no brainer. if ever.

this fact is why the 60k mile tune up, will fix it. new wires.
new HV wire set, I run NGK MAG wires, they last 2x longer.
easy.

no only that. with wasted spark , the other plug in the loop can cause your dead plug to be dead. and its wires too.
that is because it is a LOOP

if both plugs are new and both wires are new
then the coil is bad.
coil packs are usually way more expensive that $2.49 spark plugs
or $20 wires.

Aug 27, 2014 | Suzuki Vitara Cars & Trucks

1 Answer

I have a miss on my 2005 taurus is it my coil pack I have changed plugs and wires


If it is really missing, the check engine light should come back on.
The problem could be a coil, plug, injector, or mechanical problem such as a sticking valve or vac leak.

Jan 11, 2013 | Ford Taurus Cars & Trucks

1 Answer

Missing after replaced plugs. 131K miles - no coil replacement yuet


more thgan lightly the coil pack, or possably compression!

Sep 18, 2012 | 2000 Ford Crown Victoria

2 Answers

My truck is missing on the forth and fifth


things that can cause it to miss.
fouled plug (checked)
bad wires(checked)
coil pack(checked)
ignition signal to coil pack( switch old coil pack to a working cylinder to make sure its good and you may find a possible short in the wiring to the coil pack) alternately check the voltage to the wires going to the coils make sure like colors have like voltages. im not too big into ford trucks but thats a good start for most vehicles
possibly injector stuck open and flooding cylinders
timing could be off

Jul 20, 2010 | 1998 Ford Ranger SuperCab

1 Answer

Knocking sounds coming from either the camshaft or timing belt area the the check engine light is on and throwing a code for a miss fire on cylinder 6 does anyone have any ideas?


a miss fire would mean a bad coil for #6
if you have a coil pack all with all 6 plug wires need to replace it.
if your coil pack has 3 or 4 coils need to replace just the one with # 6 plug
wire in it. most have 2 plugs per coil.

Jun 23, 2010 | 2005 Hyundai Tucson

1 Answer

Check engine light flashes sometimes and runs rough


A flashing check engine light is a critical indicator. That usually means that something went wrong that will damage the emission control system... and that is usually an ignition issue. First off, the OEM plug your car calls for is an NGK irridium... NOT BOSCH and not anything with more than 1 prong. Those NGKs are like 2 bucks and they are the proper plug. Make sure you have these plugs and make sure they are gapped to .028. Next, my suggestion is put all the new stuff on again. Drive it to autozone and have them delete all the codes. Drive it around until the check engine light comes on again, then immediately go back and read the codes. The ECU is smart enough to know which cylinder is misfiring. On these cars, I think they have three banks of two... meaning one "coil" inside the coil pack operates two of the cylinders. So if you get multiple misfires, it's the coil. If you get one misfire it's probably an individual plug wire or plug. Good luck.

Jul 15, 2009 | 2001 Volkswagen Passat

10 Answers

2004 lincoln aviator engine miss and rough idle


I HAVET HE SAME PROBLEM WITH HEAD # 7, THEY SAY I NEED A NEW ENGINE? $ 5000, DON'T KNOW WHAT TO DO?

Feb 18, 2009 | 2003 Lincoln Aviator

1 Answer

1994 mercury grand marquis v8-281--4.6l


Ok odds are you just need a routine tune up. Plugs, fuel filter, air filter. Now this engine uses coil packs i think, so you wont have normal plug wires. The coil packs are individual and sit directly on the plugs. So it is possible you have a bad coil pack. These engines were known to have this problem in excess. So try the cheap fixes first. plugs, fuel filter...these two is the best two to try first.. The air filter wont cause a bad miss unless it is completely dobbed up. so just for your own good to change the air filter.Now if neither the plugs or fuel filter fixes this car try this. Each coil pack will have an individual plug on top of them. So listen closely to your engine. Unplug each coil pack one at a time, Now evry time you unhook a plug the engine should miss, so unplug one at a time, and if the engine does miss they are working properly. Now if you unhook one of these and there is no change in the idle of your engine, my friend you have found the problem. All you have to do if you find one that does not change the engine idle, you just go buy a coil pack and replace it. This should fix you right up

Sep 04, 2008 | Mercury Marquis Cars & Trucks

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