Question about 1993 BMW 3 Series

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#1 cylender not firing

I have a 93 320i ,no spark on #1,new coil still no spark,checked power at coil plug i have power on one pin ground on middle pin and solid ground on third pin .third pin should be flashing ground,what could be the issue?

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If it's only one cylinder that's not firing it's more likely that the HT lead (or spark plug wire, depending where you come from) is open circuit. Try replacing the leads before you go any further, hopefully that will solve your problem. You can test the lead resistance with an ohmmeter (allow for max 12000 ohms per 12 inches), but the problem could be that the lead is shorting to earth somewhere, which won't show up with a resistance test.

Hope this helps,
Mark.

Posted on Nov 05, 2008

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2 Answers

No power to ignition coil


2004 Suzuki Forenza , so say title.
what engine?, 2.0L or out side usa with 5 engines used.
power to.,.

  1. check fuses yet, that be first. (all electrics that.)
  2. scan it next to see DTC errors related to IGN COIL.????
  3. RTM , the manual is 4 bucks read that yet?


https://suzukipitstopplus.com/Products/1027-2004-forenza-service-manual.aspx

so are you saying there is no spark on all 4 cylinders.
that be first, 1 &4 dead or 2 &3 dead. (coil pack pairs, not with wires scrambled, they most not be connected WRONG)

if only 1 pair fail we have a cure.
if all 4 die, other ,,, see?
tests matter, doing all tests on wasted spark, tells you whats up.
test with 2 spark plugs. new.
shells gounded.
1 and 4
then 2 and 3. pairs.
all 4 fail, or just 1 pair? a key fact. on all wasted spark systems.


if you scan and get DTC shows, cmp dead, ckp dead or
ignitor 1 dead, well, ???? do you>?
coil pack
if pin 2 is 0v, cranking
the fuse EF10 is blown or the pump relay open.

to fix cars like this, you need the book, the schematic,
as seen here.
the ecu fires the hidden coil pack drivers.
if one plug goes open , you lose 2 cylinders
if one HV wire goes open, same.
see?
if one HV wire shorts to ground only THAT cylinder goes dead.

pin 86 is 12vdc cranking
pin 85 , the ECU grounds this pin to send power to the coil pack.
pin 30 is obvious, 12vdc all the time.

25959996-4zravhdsrnjs1qqbtsjws2h4-4-0.jpg

Nov 14, 2015 | 2004 Suzuki Forenza

1 Answer

Y is my 97 chevy only fires on the number one cylender


if you have fire on the number one cylinder,it means that the ignition coil is working so your problem can come from spark plug wire or cap and rotor . unplug the wire from ignition coil to distributor and check for fire you are suppose to have fire because you saying having fire on cylinder one. from there change cap of distributor and rotor plus a set a spark plug wire.

Oct 07, 2014 | Chevrolet Silverado 1500 Cars & Trucks

1 Answer

#1 coil keeps cracking 2007 dodge ram 1500 5.7 Hemi


Check the coil ground wire. Positive should be Brown with a White Stripe and ground should be Dark Blue with a Dark Green Stripe.If it is frayed and grounding out, it will keep the coil active and make it overheat and crack. If you can get ahold of a noid light set (they are actually for testing injector pulse) or rig up some test wires and a test light in the pins on the connecter, the light should flash rapidly at half the engine speed. (once every other revolution to fire the spark plug) If it is staying on then it probably means a short circuit. You have to ground the test light through the connector, because the computer controls the coil on the ground side. Meaning, you should have constant power on the positive pin with the ignition on

Jan 27, 2014 | 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

1 Answer

Engine light on. went to auto parts store, they diagnosed number 2 or 3 cylinder not firing. prior to this i changed plugs and wires. then i changed the coil. the engine light went off and the gas economy...


Hello mikew564.The first diagnosis was number 2 or 3 cylinder not firing. Once you changed the coil, the check engine light went off. When the light came back on again, did you get it diagnosed again to find out if the problem was the same?... 2 or 3 cylinder not firing????

First of all, there is NO extra wire/ground on the coil/ignition wiring (see images below). The spark plugs and ignition plug wiring can be checked for arcing, corrosion, resistance and can be checked for cracks in the insulators or worn electrodes (and spark gap) by a competent mechanic.
If you are having the same issue (2 - 3 misfire), there are several techniques for eliminating the plug wires or spark plugs. Spray water on the plug wires to see if they are arcing. Swap plugs from cylinders 2 & 3 with cylinders 1 & 4. If you still have a 2-3 misfire, check/inspect/examine the coil connector pins & coil harness to the coil(s) themselves.

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Aug 27, 2011 | 2004 Hyundai Elantra

1 Answer

1998 pontiac firebird coil pack, will coil make it miss on 1 cylinder, 3800 engine, misfiring, have changed plugs and wires


yes, it can happen. check for spark from the number one coil using spark plug wire and hold it near a grounded point. it should be a consistent spark with engine running. compare to different coil wire for verification. those coil packs are partially replace able because each coil fires two plugs. replace the no.1 portion with a new one from parts store. 28.00

Jun 21, 2011 | 1998 Pontiac Firebird

2 Answers

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Have you changed the spark plugs/wires? A scan will pull up any codes that can narrow the issue as well.

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power not reaching cylinder 1 ignition coil. check electrical connections and wiring for any damage. test for power and ground at cylinder 1.
hope this helps.

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Feb 22, 2009 | 1988 Chevrolet Cavalier Z24

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