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  #1  
Old 08-27-2012, 09:37 PM
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Exclamation No Spark to plug

Please read following things in have done.
Changed spark plugs, Cam and Crank sensors, Checked and reChecked Relays, Cleaned Maf, Changed Throttle Body, Rotated Coils 1 Cylinder at time a total of 4 times, Checked Volts and Ground @ Connection. Checked Ground on Frame and Trans. Checked Fuses.


Now to problem.
2002 Nissan Altima 2.5L 4 cyl
No spark @ Cyl # 2 all coil are good, rotated to every cyl all work but at 2
No power to accelerate from stop, loss of power in higher gears.
Had problems both and after changing parts.

Cant think of anything else at the moment. Any help will be greatly appreciated. Speed in getting this fixed is in high demand, my wife has missed 2 day of work.
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  #2  
Old 08-28-2012, 01:23 AM
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car in fail-safe mode, replace ignition coil on #2 cyl.
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  #3  
Old 08-28-2012, 02:05 AM
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Oops! you said all coils are working except no spark on cyl. #2. you need to test the power circuit for short or broken wire. refer to engine control manual.
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  #4  
Old 08-28-2012, 08:59 AM
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Connection did have a broken wire before i posted but i solder the connection still no spark
I will follow wire to ecm looking for break.
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Old 08-28-2012, 04:34 PM
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Followed wires found no break
Resetting ecm by disconnecting battery touching +-
also im reseating Cam and Crank Sensor
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  #6  
Old 08-28-2012, 04:53 PM
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I thought disconnecting the positive terminal from the battery was to reset the ECM, but you are disconnecting both the positive and negative and then touching them together? Wouldn't that short circuit the electrical system or something?
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Old 08-28-2012, 07:24 PM
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verify you soldering job again. just disconnect negative batt. cable for 30 minutes, its long enough to erase the trouble code. when disconnecting batt. cables, always disconnect the negative cable first.
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Old 08-30-2012, 08:40 PM
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I reseated Crank and Cam sensor
Replaced Coil and Crank Sensor Connecter
Cleared Ecm
Still no spark @ #2 Cylinder
Multimeter Reads 12 volt @ Red (+) Black(ground) and 5-7 Volt @ Green/Red (ECM)
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  #9  
Old 08-31-2012, 01:28 AM
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Quote:
Originally Posted by Trueblu View Post
Still no spark @ #2 Cylinder
Multimeter Reads 12 volt @ Red (+) Black(ground) and 5-7 Volt @ Green/Red (ECM)
short in signal wire (G/R), ECM terminal 22. refer to EC-556.
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  #10  
Old 09-01-2012, 01:45 PM
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i think i found it no continuity on ground for CKPS where does this wire run
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  #11  
Old 09-01-2012, 02:08 PM
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refer to from EC-97, circuit diagram and from EC-282 regarding crankshaft sensor. manuals are in Knowledgebase section.
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  #12  
Old 09-01-2012, 05:21 PM
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ok Check and ReCheck all wire and connector they are good
im going to put the car on the machine tomorrow check for ecm problems
will get back to you guys then
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  #13  
Old 09-19-2015, 04:20 PM
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03 altima 2.5, replaced head. Now no spark. Checked all wiring that I unplugged. Looks good. They got engine really hot. Cracked head, exhaust was full of water. Any ideas?
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  #14  
Old 09-20-2015, 09:33 AM
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Quote:
Originally Posted by Todd Mousel View Post
03 altima 2.5, replaced head. Now no spark. Checked all wiring that I unplugged. Looks good. They got engine really hot. Cracked head, exhaust was full of water. Any ideas?
Todd Mousel - was this a running engine before you replaced the head? I assume this was a DIY project. I also assume that you followed the procedures setforth in the service manual.

Now you have no spark in one ignition coil or on all 4 ignition coils. If no spark on all coils, Check Timing.
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