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The number 1 cylider not firering ,there is power coming to it but no spark ,ECU was tested they see no problem ,Compresion test tested and fine ,Coil packs ,enjectoers ,tested and all fine. There is still no spark on No1 cylinder.c

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  • Cars & Trucks Master
  • 42,016 Answers

Change the spark plug as it may be shorting out internally and not sparking across the electrodes. If there is a block of carbon across the gap the same thing

Posted on Nov 28, 2013

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  • Cars & Trucks Master
  • 5,276 Answers

Swap the coils around. See if the no spark follows that coil, or stays at number 1. Could be a bad plug wire, too. Or the wiring to the coil for number 1.

Posted on Nov 28, 2013

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6ya6ya
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ftw1952
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SOURCE: need location of ecm/ecu on 88-93 buick regal

Its under the hood on the right side of the inner fender well covered up with a black plastic shield

Posted on May 23, 2009

  • 11 Answers

SOURCE: not getting spark

Testing the coil packs.

1. Get an INSULATED wire and hook it to a ground on the car.
2. Get some one to help you
3. pull a spark plug wire off the coil
4. hold grounded wire close to, but not touching, the part where the spark plug wire connects
5. keep hands away from coil and have your helper turn the engine over ( start car and turn off)
6. if there was a spark between the wire and the coil pack it is good. if not, the coil pack needs replaced
7. replace the spark plug wire
8. test the rest

Posted on Jul 03, 2009

dnewcombe1
  • 1564 Answers

SOURCE: 1-4 misfire

I'd say you need to replace the 1-4 coil pack. Any changes to the working of the pack have to be tested after the primary source with much more elaborate equipment. The coil pack is easy to replace and will save time and money for testing. Thanks, Dana

Posted on Oct 04, 2009

  • 110 Answers

SOURCE: i have a 99 grand am SE 2.4 4 cylinder and my

A misfire doesn't always have to be ignition... it's just the most common cause. Faulty or plugged injector, low compression. You need to check fuel pressure and test the fuel injector flow. Then check compression. If you don't have tools for these tests, take it to someone who does. Testing is much cheaper than throwing parts at the problem.

Posted on Feb 25, 2010

  • 819 Answers

SOURCE: I have a 2002 TrailBlazer with the straight

did you replace only one spark plug? that can cause issues because of differences in resistances between cylinders. also, did the map code stay off after replacing
?

Posted on Feb 28, 2010

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1 Answer

1992 isuzu rodeo has no spark I have changed the coil , the rotor , the spark control modual , the ecm , the pick up coil , still no spark could it be the ecm relay ??


double posted, why?
I guess you are h3ll bent on gue$$ and not testing.
so keep going replace everything, we love to watch.
why not use the diagnostic jumper as posted in your other posting.
why>?
no spark out of coil right.
recap of last answers.
fuses, good, all 7 for ecu +spark good????????
we test them not guess, but ones that look blown are.
CEL Glow key on,?
flash codes ok 5 seconds cranked.
CKP good , the ECU will tell you its bad with flash codes.
why skip this key test??????????????????????????

The ECU must have power ! this is first. not changing out tons of stuff, 12vdc power,, and there are 7 fuses.
i bet you never tested them
or measure all ecu power pins to see if its has power first.
and is FIRST, no brain,(ecu)no spark and then no fueling.
if the CKP is dead, there can be nos spark.
ever.
I can only presume you connected a good new spark plug
to the actual coil tower point, then ground the spark shell.
and cranked and spark really is dead, 100 years, same way.
if dead, check 7 fuses.... seen in the book on car.
log in to mitchells diy. (google that)
and read how it works, its all there, read it.
a schematic to.

Nov 26, 2016 | Isuzu Cars & Trucks

1 Answer

No spark but power to coil no spark out


at all 4 spark wire tips?, but what about the coil does it have spark ( there are 5 places to check for spark,not 4)
does the cam spin?, & run the belt over 60k miles.?
open oil cap filler, see cam, see it spin ,cranked?

Ill assume the cam spins and the COIL really is dead. below.....?
if the cam belt slips the coil makes spark perfectly but is now timed ALL WRONG.

This is a G16 engine, and the ECU makes the spark.
here are the steps.
1: fuses good, "FI" and IGcoil. both !!!
2: key on, CEL lamp must glow or ECU is dead, (see #1)
3: Insert diagnostic jumper and crank engine for 5 full seconds
bingo it tells you why there is no spark about 90% of time.
code 41 or 42 , that means the ECU knows why, it fails.
DTC flash codes (CEL lamp falshes)

paper clip test is here, 100% documented .
http://www.fixkick.com/CEL/CEL.html

CMP dead, due to cam belt snapped?
there is no CKP sensor until 1996 (usa EPA laws)
The ECU sees the CMP pulses and generates spark.
via the IGNITOR.

all 27 ways to not start.
but if the Ignition coil high voltage tower is dead, you need to use make sure cam spins and then the DLC jumper clip test.

http://www.fixkick.com/nostart.html

Apr 19, 2015 | 1995 Suzuki Sidekick

2 Answers

No spark


PLEASE, up date your posts and not post 5 posts.
update it and tell the full story 1 time. THEN ADD TO IT, and please not start a new post. for 1 problem.

first off , i answered in details how to test the nostarts for just that.
but in another post its a blown fuse. then you fail to say which it is
or if it RE BLOWS> that is a big problem , posting

first off here are the no start rules. (you lost spark , got that)
1: check fuses, if the fuse blows again, this is JOB 1. spark is later. much later, the ECU can no process data, if there is no 12vdc POWER , it cant,
nor can it glow the CEL /SES lamp in the dash, IT cant.
The ECU in this car makes spark and fuel happen.
there are 3 fuses to blow that can kill the ECU dead.
so the first JOB on all modern EFI cars, is to get the CEL TO GLOW.
CHECK ENGINE LIGHT. = CEL.

your problem on car is not NOSTART
its NO power
no 12vdc power to the EFI system parts.
is the battery charged?
12.6vdc rested, or at 11v. ?
this is first.
then does that fuse keep blowing. i bet does, my gut feeling.
and which fuse?
if the fuse blows, we must to short testing
we have great videos to cover that, very detailed,....

btw2
the honda, has free operators guides
and full FSM , for free... ask.

Jul 09, 2014 | 1991 Honda Accord

1 Answer

1994 Geo Metro will not start


all spark plugs dead. and at the main coil?
in this case after fuse (test them , ones that look good can be bad)
these steps work or all EFI cars made.
first is the rotor spinning cranking, if not the cam belt snapped!
a 1 second check, do you try to run 60k mile belts 200k ?


  1. CEL lamp on? key on? no crank? y/n,, if no the ECU is dead. or lamp burned out, we fix this FIRST. for next tests.
  2. I insert the diagnostic jumper clip (paper clip)
  3. the CEL now flashes codes, write them all down.
  4. I then crank for 5 seconds. and release the key.
  5. The ECU then reports live codes. beyond above stored codes.
  6. The ECU is very good at finding bad crank or cam sensors dead or even missing pulses, 1 in 10 lost. trust it, on all cars ......
  7. if no sensor code errors or spark bad errors then do the next things.
  8. The ecu also reads back the Tacho signal and will report dead tacho, sig, the ECU creates this and is the COIL drive signal to the ignition coil via the IGNITOR device.
  9. If the ignitor dies, or the coil primary opens, (dead Ign.coil) then the ECU see this and gives you Spark fail codes, cranking only!
  10. if you get far with a dead ignition coil, the ignitor is bad or the coil assuming coil even has power 12vcd key on.
this is all in the FSM, if you read it.
as is the Ignitior tests, and the coil tests.
The FSM is an amazing thing if your read it.
buy one.

ECU = engine brain, or EFI brain
EFI = eletronic fuel injection
CEL is the check engine light also called SES or MIL.
your ECU is OBD1 and no scan tool works .
only the winky blinky light.

Mar 04, 2014 | 1994 Geo Metro

1 Answer

My 2005 jeep 4.0l has dtc 2302 , hesitates, replaced pcm still has code


replacing PCM is the last, why do that. which jeep,? wrangler? GC?
ECU is not bad and is almost always (GIGO) garbage in ,nets garbage out, now and for ever....
all most all errors are
1: input errors.
2: or bad output actuators or gee the engine it self.


now lets work
2302
ever see this>? or the FSM, the FSM book is way cheaper than any knee jerk ECU swap.. ouch.
http://engine-codes.com/p2302.html
out of FSM. actual
(F342) ASD OUTPUT CIRCUIT
(K19) COIL CONTROL 1 CIRCUIT OPEN
(K19) COIL CONTROL 1 CIRCUIT SHORTED TO GROUND
COIL
PCM (last ) never 1st ever....
so the coil pack is 4 pins and 3 coils, one one is hot key on.
the other 3 are 3 coils, coil 1 is bad,,
from a pure tech stand point its.
1: bad coil (open or shorted) bad wires, open or shorted or bad ECU.
we never condemn any ECU unless we do the simple lamp tests.
etc. case in point below.
here are the FSM steps, so easy to do.... (truncated, read your FSM)
1: coil 1 removed, connector.
key on is pin 2, 12v, if no fix that first. ( bad power distra. or fuse)
yes, 12v. so.
then, use a test lamp to pin 3 and ground
Pin 3 is COIL 1, !
crank car , does light flash? (any small 12v lamp works) 0.1 amps are less.
1: yes, flash PCM good, coil bad.
no?
test lamp tests continue....
2: stuck on lamp , wire is grounded out or bad PCM (pull PCM C2 conn, ? still tuck on?, yes, bad harness !
3: stuck lamp off? . this is harness wire cut or PCM bad.-
check continuity end to end on this wire. if good , bad ECU.
on a car with nice clean harnesses, no damage to conn?
its a bad coil.
the coil can in fact can be bench tested...
that to, is in the books.
(ohms tests, and make real spark) do so but do not exceed max dwell on the coil "smoke tested boom."( you need a pulse generator , or coil tester)
easy to make them .
there you go.... ECU last. for ever and ever.....

Sep 27, 2013 | Jeep Cars & Trucks

2 Answers

No spark from ignition coil to start the engine of suzuki vitara16v EFI engine. what is the cause of it


what year? what country? sounds like suzuki G16b engine. is it? or 2.0L?
The reasons are the same basically for G16 or the 2.0L
Both engines have ECU.
Both need good fuses to power ECU and coils.
Both engines need working CMP.
my guess is this is a distributor engien G16b (YOU SAND COIL NOT COILS.)
1: fuses, test the fuses relate to ECM/PCM (3 fuses)
CEL LAMP MUST BE ON KEY ON OR ECU HAS NO POWER.
2: g16B( CRANK FOR 5 seconds), with scan tool connected.
A $50 tool that is indispensable.
P0355 or P340 DTC , bingo, no spark.
or while cranking RPM is dead at 0 RPM.
if all that passes, then check the coil signals. (@ minus term)
The coil has an ignitor in the dizzy and both can go bad.
recap.
power 12v to ECU
CMP working
ECu sees CMP and sends spark to dizzy ignitor.
Ignitor , drives coil, coil makes spark ,engine runs.
nut shell

Mar 09, 2013 | Suzuki Vitara 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

I have replaced the coil pack on my 2002 ford taurus with the 3.0 24 valve engine. I have no spark to cyliders 3 and 4. I have also replaced the electical connector to the coil pack as well. All 4 wires...


All 4 wires have power and the yellow and white and the yellow and black pulse with the test light, the yellow and red and the solid red wire have a steady light with no pulse. The PCM - engine computer is no good , driver (transistor's) in side turn the coil on an off . Burnt transistors .

Mar 30, 2017 | 2002 Ford Taurus

3 Answers

1989 astro van turns over will not start seems not getting fuil gas tank full


#1 NEED TO VERIFY SPARK AT SPARK PLUGS # 2 CK FUEL PRESSURE AT SCHRADER VALVE ON FUEL RAIL ,,PRESSURE DEPENDS ON TYPE ENGINE ....IF NO SPARK AT SPARK PLUGS CHECK SPARK FROM COIL WIRE , IF NO SPARK AT COIL ,CHECK VOLTAGE TO IGNITION COIL SHOULD BE 12 VOLTS, IF NO VOLTAGE AT COIL ( KEY ON ) CHECK FUSES THEN IGHITION SWITCH. IF NO FUEL PRESSURE AND FUEL PUMP RUNS REPLACE PUMP .. CK VOLTAGE TO FUEL PUMP WHILE CRANKING . CK USING PUMP GROUND WIRE AT THE PUMP CONNECTOR THIS WILL PROVE GROUND ALSO. USE TEST LIGHT TO VERIFY

Aug 07, 2010 | 1989 Chevrolet Astro Cargo

3 Answers

1999 jeep cherokee 6 cylinder engine light


1.Plugs
2. Vacuum leak
3. Injector fault
4. High or low fuel pressure.
Thats the list of things to check.
This is a #3 cylinder misfire.
There is also TSB about #3 injector needing added heat protection. This could definitely be the cause. I start at plugs and go from there.
Hope this helps.
Thank you,
Lee

Dec 12, 2009 | 1999 Jeep Grand Cherokee

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