Question about 1985 Chevrolet Caprice

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Im getting no spark to the spark plugs and it has electronic ignition and has power to the coil but i dont know how to test the coil or the componets to see why im not getting power to the plugs

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Take the coils off and take them down to a local AutoZone or Advance auto...they will do it for free.

Posted on Oct 05, 2009

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I have a 2001 roadking police bike. it has no spark. the bike cranks fine the fuel pump works, I checked all fuesess relays. checked the ckp sensre for metal ,checked the pickup senser metal. checked




Are the plugs installed because without compression you will not get ignition/spark.

Are there any codes set???

Is the ignition fuse okay??? Is ECM fuse okay?

Of course first you need power to the coil which should be there whenever the ignition and run switches are on if so see below:


Are the plugs installed

Remove the coil. THEN set your ohmmeter scale to RX1 and place ohmmeter leads on the primary coil windings A (front of coil) to B (middle of coil), B to C (front of coil) and check for primary coil winding resistance which normal resistance range is 0.5-0.7 ohms. If primary resistance is not within this range check out test results below.


Ignition Coil Secondary Circuit Test

With the ignition coil removed from the motorcycle and the ohmmeter set to the RX1K scale place the ohmmeter leads on the secondary coil windings B (middle terminal) to

R (rear secondary terminal/socket), B to F (front secondary terminal/socket) and check for secondary coil winding resistance which normal resistance range will be 5.5-7.5K ohms. If secondary resistance is not within this range check out test results below.


Test Results

A low resistance value indicates a short in the coil winding which requires coil replacement.


A high resistance value might indicate that there is some corrosion/oxidation of the coil terminals requiring the coil terminals to be cleaned and the resistance test then repeated and if after the test is repeated the resistance is still high after the terminals were cleaned the coil must be replaced.

If there is an infinite ohms or no continuity) resistance value the coil is open and must be replaced.


If you have spark, it sounds like either the sensor in the timing cavity of the engine is bad or the electronic ignition unit is bad.


Oct 18, 2014 | Cars & Trucks

1 Answer

How to properly test ignition coil?


there is only one way to do it but you wont have the electronic equipment .the easy way is you have to be two people one for the ignition key the other one whit a insulate pliers you take a spark plug wire and you put the end near the engine if your coil works you will see a bleu spark . But it could be your wire that are getting hold and they leak power or your spark plugs it is better to get a book they will show you all the steps.

May 29, 2014 | 1984 Jeep CJ7

3 Answers

Replaced motor and im getting power to the distributor and to the coil packs but it wont fire we have changed the cam and crank sensors and nothing does anyone know how to help please


Without a look under the bonnet sorry hood i couldnt tell you ,yes your getting power to the coils but it may not be sparking due to the immobilisor system as this breaks the earth return circuit ,i think the best bet is to ask a local mechanic to have a look for you ,also you havent stated the year of the vehicle as this can help to decide a answer for a question as vehicles do differ with different years of manufacture although the smae model

Dec 19, 2013 | GMC C3500 Cars & Trucks

1 Answer

2006 Suzuki forenza no fire from coil pack


what country? this is the WWW, post country for better answers.......!
Only a scope can see the fast 5mS signals to the coil.
so its either the coil pack or the ECU blown. (wires are always suspect)
you never said , all 4 are dead, or 1 or 2, and how many packs.
some non usa cars have wasted (2pak) spark , not 4 COPS.
state what cylinders have spark and which don't.
there are only 2 ways to fix cars.
1: guess and swap parts
2: use tools. my guess is you dont have them.
some coil packs are active (ignitor inside) others just a coil.
you can test the restance of the coils, with a DMM , ohm meter.
if active you cant.
the fsm covers this on all cars.
https://suzukipitstopplus.com/category/3-suzuki-service-manuals.aspx
the 2006 Forenza as delivered to USA has.....
has a large single, dual wasted spark coil pack. (brick)
it does in fact have , internal ignitor drivers. inside. so can not be tested
with and ohm meter on the primary side. but can be on the secondary
you do know how to test wasted spark , right, All spark plugs must be
attached and grounded for the coil to work,
1and 4 are shared.
2 and 3 are shared.
so to test , you must keep the spark plugs (both or all 4 is best)
attached and the shells of spark plugs grounded.
there is a fuse that powers the coil pack. (usa)
the fuel pump relay sends power to the coil pack.
so of that is dead,so will be the pack. (im reading FSM as it type)
get an FSM.
pin 2 on coil pack is power. 12v.
pin 1,is spark 1&4 drive (fast ECU pulse)
pin 3 is 2&3 coil drive. (scope can see it)

recap, are you using the correct wasted spark testing method.
and are all 4 spark plugs dead.?

Feb 18, 2013 | Suzuki Forenza 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

According to the obd code i am getting a misfire in the number one cyln and it kind of sputters what is causing it


1. Bad or fouled Spark Plug at #1 Cylinder.
2. Bad or misfiring Wire going from the #1 on the Distributor/Electronic Ignition Coil to the #1 Cylinder.
3. Misfiring at the #1 on the Distributor/Electronic Iginition Coil.

a. Unplug the #1 Wire at the #1 on the Distributor/Electronic Ignition Coil.
b. Using an Auto electrical testing: Probe, wire and ground clip electrical, stick the Probe into the opening at the #1 Distributor/Electronic Ignition Coil. Use the grounding clip - clipped to a portion on the engine.
c. Start the Vehicle and check for rhythmic spark.
d. If there is NOT rhythmic spark, the Distributor/Electronic Ignition Coil needs to be replaced.
e. Turn off the engine.
f. If there is rhythmic spark: Reconnect the #1 Wire at #1 on the Distrubutor/Electronic Igntion Coil.
g. Disconnect the #1 Wire from the #1 Spark Plug.
h. Again using an Auto electrical testing: Probe, wire and ground clip. Insert the Probe into the end of the #1 Wire and clip the ground clip onto the engine.
i. Start the engine again.
j. Again Check for rhythmic spark.
k. If there is NOT rhythmic spark the #1 Wire needs to be replaced. (Replace all Wires as a Set).
l. If there is rhythmic spark then the #1 Wire is fine.
m. Turn off the engine,
n. Remove and Inspect the #1 Spark Plug. Clean if necessary and Regap.
o. Reinstall the Spark Plug and reconnect the #1 Wire.
p. Restart the engine.
q, If the code reappears:
r. Replace all the Spark Plugs.
Let me know if this helped or if you have additional information or questions. Feel free to contact me at FixYa.Com.

Feb 09, 2010 | 2000 Lincoln Town Car

1 Answer

The engine will rotate but will not fire, and we want to know the proper way to check the ignition module on the 94 3.8 v6 mustang. and we just want to get the problem fixed so I can drive my baby.


Ignition Module is actually a class C amplifier. It amplify signal instead of music. Class C amplifier are very efficient type of ampifier. They are used to drive the flyback transformers in a television to create high voltage for the screen. In a car it drives the ignition coil to produce high voltage for the spark plug.
You can't test them unless you know electronics, but you can do an elimination process. Remove the ignition coil from the car, and bench test it. Note the postive and negative terminals. connect a spark plug to the output. and ground the spark plug at the negative side of the two terminals. Apply 12 volts to the terminal, then take off the positive side, as the voltage collapses a high voltage is induce firing the spark plug. The most likely item to go bad in an ignition system is the coil or the ignition module since they work the hardest. If the coil tested good you are almost sure it is the module.

Nov 14, 2009 | 1994 Ford Mustang

4 Answers

No spark at plugs . Engine won't start, check fuel first, getting plenty. Then check for spark, no spark.


Have you checked your plug wires to see that are tight? The plug wire may need replaced.

Aug 21, 2009 | 1994 Buick LeSabre

2 Answers

Car cuts off when it gets hot


I dont know what year and engine you have but sounds like a typical ford ignition module problem.When it will not start,check the spark at one of the plug wires.If there is spark when it is cold but none once warmed up.Replace the module.Your parts house (autozone or advance) can check it for you.But remember it is going to test good when it is cold.They have no way to check it while its hot.If your not sure,have it checked out by a profesional.Good Luck!!!

Aug 04, 2008 | 1997 Ford Mustang Cobra

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