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JD 345 Having problem with ignition coil or ignition pulse. How do I check each? When it warms up the left side cuts out and may eventually stall. I pull the plug wire off it doesn't make any difference but there still is some spark that I can see.

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I have a Gx 345. Had a very similar diagnostic issue. Make sure you have a fresh set of plugs and have checked wires for abrasion. The best way to see, if you have a grounding out issue is to start tractor in the night and look for sparking on each side of engine.

Anyhow, after replacing ignition circuit board, the problem was corrected. Coils fail very rarly, if failed they simply don't work. Typically, an intermittant problem would point to circuitry or grounding issues.

Posted on Jul 09, 2010

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2004 chevy impala start car runs about10 minutes then stalls new fuel pump when stalls cut out like running out of gas then don't start till cools off if electical to me would cut out instantly help


Not if ignition module . Electronic componets when heated up will act just like that . When it dies check spark, fuel pressure right away an find out what quit . Test don't guess . Videos on youtube on testing GM ignition system. Which engine does yours have ? Had option of two different ones . 3.4 an 3.8L . Ignition module or cranhshaft position sensor could be the cause .
Three dual tower ignition coils are mounted to the ICM, and are serviced individually. The ICM performs the following functions:
• The ICM supplies a power and low reference circuit to the CMP and CKP sensors.
• The ICM determines the correct direction of the crankshaft rotation, and cuts spark and fuel delivery to prevent damage from backfiring if reverse rotation is detected.
• The ICM determines the correct coil triggering sequence, based on how many 18 X ON-OFF pulses occur during a sync pulse. This coil sequencing occurs at start-up, and is remembered by the ICM. After the engine is running, the ICM will continue to trigger the coils without the CKP sync pulse.
• The ICM inputs 18 X and 3 X reference signals to the PCM.
• The 3 X reference signal is also known as the low resolution engine speed signal. This signal is generated by the ICM using an internal divide-by-six circuit. This circuit divides the 18 X signal pulses by 6. This divider circuit will not begin operation without a sync pulse present at start-up, and without 18 X and 3 X reference signals no fuel injection will occur.

Pull plug wires off same coil when it dies , crank the engine , is there spark ? Ignition Control Modules ICM by Wells featuring Sgt Tech

Nov 12, 2016 | 2004 Chevrolet Impala

2 Answers

I got a 2001 olds silhouette, 3.4, with p1374. Checked ecm and replaced cps on the side of the block. ran great for about 4 miles, then it started stumbling and then stalling.


DTC P1374
The 3X reference signal is produced by the ignition control (IC) module. The IC module calculates the 3X reference signal by dividing the crankshaft position (CKP) sensor 7X pulses by 2 when the engine is running and when the CKP synchronizing pulses are being received. The powertrain control module (PCM) uses the 3X reference signal to calculate the engine RPM and the crankshaft position at engine speeds above 1600±150 RPM. The PCM also uses these pulses to initiate injector pulses. The PCM compares the 3X reference pulses to the 24X CKP pulses and the camshaft position (CMP) sensor pulses. If the PCM receives an incorrect number of pulses on the 3X circuit, a DTC P1374 will set and the PCM will use the 24X CKP reference circuit for fuel and ignition control. The engine will continue to start and run using only the 24X CKP and the camshaft position sensor signals.

Diagnostic Aids
• DTC P1374 can be caused by secondary components leaking high voltage into the IC module.
• Inspect for the following conditions:
- Incorrect harness routing near secondary ignition components
- Ignition coil arcing to wiring harness or IC module--Inspect the ignition coils for the following conditions:
• Cracks
• Carbon tracking
• Other signs of damage
- Ignition coil arcing to wiring harness or IC module--Inspect the ignition coils for the following conditions:
- Secondary ignition wires arcing to wiring harness
I would sugest you take your vehicle to a qualified repair shop an have it diagnosed , but i can tell that's not your way , is it . We diagnose not replace part's .
Replace the IC module. Refer to Ignition Control Module Replacement .
Did you complete the replacement?
Go to Step 11
--
10
Replace the PCM. Refer to Powertrain Control Module Replacement .
Did you complete the replacement?
Go to Step 11
If it starts an runs it's not the crank sensor behind the crankshaft pulley .

May 31, 2016 | 2001 Oldsmobile Silhouette

2 Answers

My JD 324 runs but will not pick up the load when the throttle is increase or the mower is engaged


Sounds like a fuel delivery problem. Filter? fuel tank outlet clogged? fuel shutoff valve not completely open? Other issues.

Apr 04, 2015 | John Deere 325 345 Tractor Service Pricing...

1 Answer

My gmc 4.3 stalls when warm and wont start without ether. then it runs fine


I had the exact problem with my 1993 chevy c1500. I found that the IAC was sticking so the engine would die at idle after warming up and the ignition module was pulsing the ECM intermittently after the engine warmed up so the fuel pump wasn't being turned on after the engine died....I replaced the ignition module and the IAC valve and all is good. I don't know if testing the ignition module reveals that it isn't sending pulses to the ECM.

Mar 28, 2013 | 1991 GMC Sierra

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

2.8 engine Would start when cool, but stall after


89 cierra? It should be DIS ignition so you can't have the timing too high. You said it has fuel and spark. Fuel pressure and injection pulse. Does it try to start if you spray carb cleaner into it?

Jun 03, 2010 | 1989 Oldsmobile Cutlass Ciera

1 Answer

I have a 94 chevy chyenne 6 cylinder that starts and runs until it gets hot and then it dies. after it sets it will start again. I was told by a friend it might be the coil in the distributor.


the way i would check this is too use timing light or a spark tester on the coil wire run motor until it stalls check for spark @ ignition coil if the pickup coil is failing you wont have any spark bare in mind the ignition module can do the same thing so can the ignition coil. the part in the distubutor is called the pickup coil there is couple ways to test this. there are wires going to the coil that come from distubutor one wire pulse fires the coil there is a wire by the coil its a tach test lead you hook up a 12 volt test light to battery positive and check for pulses after the stall ocurrs. also test before stalls so you know what to exspect.if the pulse trigger stop its either the pickup coil or the ignition module.hope this helps Thunderboltz

Jan 15, 2010 | 1994 Chevrolet C1500

1 Answer

John deere mod 345 no spark


first find the wire that is grounded to mower to ignition
and check that it is isolated if mounted on some plastic and disconnect it
if it runs to start switch check wire for cuts also
most common problem is the coil located under the top plate held on by 4 /5 screws on sides.
remove top and follow plug wire back to coil

you can clean the curved edges of coil that are against motor {magneto} with sand paper and clean mag
remove plug and lay threads securely agains frame and check for spark {hold by wedging not by hand as you can get a jolt!}

Aug 20, 2009 | John Deere Garden

6 Answers

1997 vw jetta stalling when raining


The problem in the Jetta could very well be with the ignition coil. I had the same problem for a long time and tried the usual replacing plugs, wires, etc, but nothing seemed to work.

It ended up being the ignition coil which over time, managed to sustain very small cracks. Even a small amount of moisture would cause all sorts of problems.

I replaced the ignition coil and had no problems after that.

Sep 09, 2008 | 1997 Volkswagen Jetta

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