Just googled it and it’s ignition circuit issue
Maybe @hotcobra03 can swoop in with a diagnostic guide
2001 Cobra Crank No Start
- Thread starter 67 cdime
- Start date
Just googled it and it’s ignition circuit issue
Maybe @hotcobra03 can swoop in with a diagnostic guide
Hard to find help a lot of times lol. Finally got my daughter to try starting this thing while I pulled the plug and laid it on the strut bolt. I am definitely not getting any spark. Repeat no spark which changes the game.
What causes no spark?
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What causes no spark?
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Sounds like you need to run down that diagnostic code and find the wiring issue. Try googling that code 2001 cobra pinpoint guide maybe
A wiring diagram would be a big help. I believe there is on here although I have never looked for it
Quick question, when I'm looking at the pinout for the ECM. Particularly 26 shows a light green/white wire as the COP wire for Cylinder 1, but it also shows it as the PCM to ignition coil plug as well. Why are they sharing pin 26. Kinda confusing.
Found ignition..
Looking for 2004 cobra ignition wiring diagrams
im just looking for a diagram for my 04 cobra looking for mostly the ignition wire and for a few others to work out some bugs if anyone has any please let me know thanks!!
www.svtperformance.com
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Thx @01yellercobra I'm going to review the entire thread to see what's been advised when i have a free moment. Look up some documentation and see if i can help with a resolve.
NO SPARK (Check related Ignition wiring diagrams attached in PDF'S)
CHECK PCM DRIVER TO COILS
Does lamp blink consistently and brightly (one blink per engine revolution)?
IF not, it could be either or
CHECK PCM DRIVER TO COILS
- Connect incandescent test lamp between B+ and each coil driver circuit at the harness connector.
- Crank engine.
Does lamp blink consistently and brightly (one blink per engine revolution)?
IF not, it could be either or
- Crankshaft position (CKP) sensor
- Harness Circuits: CKP+ and CKP-
- Powertrain control module (PCM)
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Thanks all for the information. I was busy all day yesterday and was unable to do anything. Hoping to get some time tonight with the information you guys have provided.
One question, so to test the coil, its a test light between the Battery + and the coil?
One question, so to test the coil, its a test light between the Battery + and the coil?
This YT video may help explain testing coil driver. Go to 4:51 in the video. If you feel uncomfortable with it just get a spark plug/coil tester and check all the coils/plugs for spark. Here is a amazon example or something similiar.
Tool Aid 23970 in-Line Spark Checker Kit for Recessed Plug
Your welcome....
Only thing I really accomplished was verifying all grounds at the ECU plug. I also verified that the Light Green/White wire that was mouse chewed is most definitely the cylinder 1 coil wire. Unsure why it comes up on the drivers side of the engine as well. Seems odd.
That’s about as much as I accomplished. I will try to put everything back to normal tomorrow and start testing the coils as mentioned above.
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That’s about as much as I accomplished. I will try to put everything back to normal tomorrow and start testing the coils as mentioned above.
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This is interesting.
LG/white wire
On side had 12v with key on?
And the other no power ..
How about a photo of said wire. ,
Few other things.
All fuses were checked in engine bay and under dash?
With a actual tool. Not just looking.
Than while you have been playing and spraying into motor.
Has the air inlet been off? And open throttle body?
Have you scanned for codes after cranking engine?
Than say you do have spark and have been cranking like crazy and find the plugs wet?
Very common for a set of plugs to cause a no start after flooding on these .
Will wait on your results as to having spark
In here. Service manual on 2003
Close enough to 01.
Has small manual with basic wiring,will work on a cell phone ,,
Same paragraph that's in.
Icon on the left of paragraph is link into the full service manual with everything for a computer/laptop
The wire in question is most certainly the cylinder one COP. I traced it out on both sides. The reason it has voltage is that it is getting powered like the other coil wires by the red wire at the coil when the coil is plugged in. I traced the other side to Pinout 26 in the ECU harness.
I have verified power to the coil plug wire (red) and back probed the signal wire with the coil pack plug in and verified voltage there (without coil plugged in, it reads no voltage and open lead with DOM). I have 12v present at the coil plug as well. I haven’t gotten a spark tester to verify spark yet.
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I have verified power to the coil plug wire (red) and back probed the signal wire with the coil pack plug in and verified voltage there (without coil plugged in, it reads no voltage and open lead with DOM). I have 12v present at the coil plug as well. I haven’t gotten a spark tester to verify spark yet.
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I am not getting spark. Tested on 2 plugs. Used a known good spark plug as well. No spark. Like I said according to all diagrams, I have the proper voltage. ECU just isn’t sending a spark signal.
What do I check next? Verified CKPS and TPS. Only code is DTC9356. I pulled negative wire and cleared all codes. This one is persistent.
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What do I check next? Verified CKPS and TPS. Only code is DTC9356. I pulled negative wire and cleared all codes. This one is persistent.
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The PCM provides a ground for the primary side of the coil. Secondary side of the coil is what provides spark. As I stated before it could be either or below.....
- Crankshaft position (CKP) sensor
- Harness Circuits: CKP+ and CKP-
- Powertrain control module (PCM)
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