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Bad ignition coil symptoms - Cars & Trucks

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My 2007 Suzuki Freneza Coil box ,One Clinder does not Fire

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Bad ignition coil symptoms


Depending on the make model and year, you may have a trouble code stored in the computer telling you which cylinder.

Sep 04, 2014 | Cars & Trucks

2 Answers

Why do new spark plug coils go bad ?


coils, it has just one coil pack. with 3 coils integrated.
its not COPs.
there are many DTCs related, and not posted.
did you try new spark plugs, then new wires. and then only last the coil pack? check compression.
is it failing the same cylinder? (the will fail in pairs, if the pack is bad)
the pack runs 2 cylinders at once (in series)
injectors leaking or clogged.
since you didnt show the symptoms, i cant help much.


how.?
1 month or 1 year?, or how many miles?
answer 1
time, heat,vibration, oil contamination. (pressure washing them)
not using the dielectric grease on the boots.
getting water in the wells over and over, causing flash over , and carbon tracking.
what make you think they are bad.???
my guess, is you see P03xx codes and assume the means bad coil.?
post symptoms.
post scan data, and DTCs.

May 21, 2014 | Jeep Cars & Trucks

1 Answer

Getting real bad fuel economy and rpm doesnt seem right as it shifts and gains speed


please have your ignition coil pack checked. the coils go bad often on ford cars/trucks. if thats ok, then have your catalytic converter also checked. if its clogged, then it will cause the symptoms you describe.

hope this helps

Feb 12, 2014 | 1999 Ford Explorer

1 Answer

I cannot get spark to coil, on 4.3 2000 v6 replaced ign module,pos sen,cap rotor, coil,fuel pump and timing


it sounds like you may have an ignition switch problem. if no spark to coils this may be it ! There are two major parts of an ignition switch, which may fail, causing starting problems. Either the electrical switch fails or the lock cylinder mechanism fails. Any of these two failures may manifest themselves in the form of the following symptoms. The obvious symptom of a bad ignition switch is the refusal of the car to start. If the car battery and the alternator are ruled out for any problems, the culprit is mostly the ignition switch that may have to be replaced. This may occur because of problems with the lock cylinder or the underlying electrical switch. If you notice the discrepancy whereby the headlights switch on and the car horn is working, but the car won't start, you can be assured that the ignition switch is the source of the problem. So if you notice such a discrepancy, it's time to get the ignition switch checked or replaced.

Apr 01, 2012 | 2000 Chevrolet Silverado 1500

1 Answer

When i turn the key there is no response dash lights are on but they dont dim like car is not getting power to starter


Sounds like the ignition coil has gone bad. the symptoms are very similar, in case of a bad coil you will have radio, dome light and dash lights but nothing involving the engine turning over. you should also try putting the vehicle in neutral and starting it because it could be the neutral safety switch which will cause the same symptoms. good luck

Dec 28, 2010 | Ford Contour Cars & Trucks

2 Answers

Not getting spark


need more info (need to know what type of ignition system your vehicle has: (1) traditional ignition coil /distributor system, or (2) electronic ignition, but lack of spark problems are usually a faulty coil
on traditional vehicles, and on the newer electronic ignition cars, total lack of spark would be
a faulty ECM (electronic control module) - partial lack of spark (diagnosed with a HEI (high energy ignition) spark tester kit), would be caused by a faulty coil pack (in the waste spark system), where
there's 1 coil pack for every 2 spark plugs.
I bought my HEI igntion testere kit for $20, but Harbor Freight sells a similar unit for $10.
Hope this helps.

Dec 27, 2010 | Ford F-250 Cars & Trucks

3 Answers

Symptoms of a bad pick up module on a 1996 GMC K2500 Suburban


What I see the most often is a stalled engine with a loss of spark when driving. Once the engine cools off it will sometimes start and run fine for a short while then do the same thing again. Often, but not always, the pickup up coil or ignition module [both are under the distributor cap] have to heat up quite a bit before they will act up. I replace about 10 ignition modules for every one pickup coil but either one can cause the same identical stalling problem. I keep a few known good modules around as test units so I can just replace a suspected bad module and road test it to see if it works. Another thing that can go wrong in these distributors are the magnets built into the pole piece. A weak or cracked magnet can cause all kinds of odd problems such as stalling when placed in reverse, misfires over 1,000 rpm, etc. Worn bushings in the distributor can also cause problems. As far as a specific test you can do to see which part is failing? I wish there was a relaible one. I've tried using a lab scope and module testers to diganose the culprit but you have to catch the problem as it's happening for those tests to be accurate.

Jun 17, 2010 | 1996 GMC Suburban

2 Answers

The code reads P 306 misfire on cylinder 6. How


A P0306 code means that the car's computer
has detected that one of the engine's cylinders is not firing properly. In this case it's cylinder #6.

Symptoms may include:
the engine may be harder to start
the engine may stumble / stumble, and/or hesitate
other symptoms may also be present

Causes

A code P0306 may mean that one or more of the following has happened:
Faulty spark plug or wire
Faulty coil (pack)
Faulty oxygen sensor(s)
Faulty fuel injector
Burned exhaust valve
Faulty catalytic converter(s)
Running out of fuel
Poor compression
Defective computer

If there are no symptoms, the simplest thing to do is to reset the code and see if it comes back.

If there are symptoms such as the engine is stumbling or hesitating, check all wiring and connectors that lead to the cylinders (i.e. spark plugs). Depending on how long the ignition components have been in the car, it may be a good idea to replace them as part of your regular maintenance schedule. I would suggest spark plugs, spark plug wires, distributor cap, and rotor (if applicable). Otherwise, check the coils (a.k.a. coil packs). In some cases, the catalytic converter has gone bad. If you smell rotten eggs in the exhaust, your cat converter needs to be replaced. I've also heard in other cases the problems were faulty fuel injectors.

Feb 15, 2010 | Dodge Durango Cars & Trucks

3 Answers

Cde po301


A P0301 code means that the car's computer has detected that one of the engine's cylinders is not firing properly. In this case it's cylinder #1.

Symptoms may include:
· the engine may be harder to start
· the engine may stumble / stumble, and/or hesitate
· other symptoms may also be present

A code P0301 may mean that one or more of the following has happened:

· Faulty spark plug or wire
· Faulty coil (pack)
· Faulty oxygen sensor(s)
· Faulty fuel injector
· Burned exhaust valve
· Faulty catalytic converter(s)
· Running out of fuel
· Poor compression
· Defective computer

If there are no symptoms, the simplest thing to do is to reset the code and see if it comes back.

If there are symptoms such as the engine is stumbling or hesitating, check all wiring and connectors that lead to the cylinders (i.e. spark plugs). Depending on how long the ignition components have been in the car, it may be a good idea to replace them as part of your regular maintenance schedule. I would suggest spark plugs, spark plug wires, distributor cap, and rotor (if applicable). Otherwise, check the coils (a.k.a. coil packs). In some cases, the catalytic converter has gone bad. If you smell rotten eggs in the exhaust, your cat converter needs to be replaced. I've also heard in other cases the problems were faulty fuel injectors.

Feb 15, 2010 | 2004 GMC Envoy

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