No spark

GCARTERLV

MEMBER
2005 NISSAN SENTRA
4 CYL
FWD
AUTOMATIC
44,000 MILES

Had to remove head to repair broken off spark plug. After reinstalling the head, I had no spark. I have compression, and gas. There are no engine codes, and there is voltage to all four coils (coil over plug ignition). The computer will fire cylinder 4, one time only at the start of cranking, occasionally. I am using AlldataDIY as my repair manual, but it gives no way to diagnose this problem. Email to them for help has gone unanswered. HELP

6 Replies

RASMATAZ

MECHANIC
75,992 POSTS

Hello,

It sounds like the crankshaft sensor has stopped working here are diagrams and instructions on how to replace it. Check out the diagrams (Below). Please let us know what happens.

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Tuesday, June 23rd, 2009 AT 7:30 PM

CRAZYSENTRA

MEMBER
1 POST

I have the exact same problem. I had to replace the sensor cost me $89.00 all set!

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Tuesday, May 20th, 2014 AT 11:36 AM

CAPTKCP

MEMBER
38 POSTS
2004 NISSAN SENTRA
1.8L
4 CYL
FWD
AUTOMATIC
50,000 MILES

Me and my mechanic is at wits end going for a final stretch before we junk this car.
Awhile back my Nissan quit running a git a trouble code for the camshaft sensor I replaced it and still got nothing I then replaced the computer still no start at this point I gave up and took it to my mechanic and he found that the timing chain need replaced he replaced it and still didn't get any spark he re-replaced the cam and crank sensors checked fuel pump and still nothing we even check wires for breaks non found.
While searching the internet we have found that this is a common issue for this vehicle but noone ever posted any solutions the found so you guys are my last hope thanks

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Thursday, July 11th, 2019 AT 12:07 PM (Merged)

HOMER1967

MECHANIC
875 POSTS

Tell your mechanic that we can help but we need more info. Such as. So you have no spark?Do you have injector pulse?What is the fuel pressure. Do you have communication with the vehicle? Do you have a cranking rpm reading? If so what is it?Will it start on alternative fuel?Exactly what code/codes did you have?These are just very basic tests that we perform on a no start/spark vehicle. With the information I have asked for I should be able to provide you with an answer.

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Thursday, July 11th, 2019 AT 12:07 PM (Merged)

DALEHOBBS

MEMBER
1 POST
2001 NISSAN SENTRA
4 CYL
FWD
AUTOMATIC
65,000 MILES

I cannot detect a spark at the plug. Also when a scan tool is hooked up the data link connector I get a no link cannot connect message. Does this indicate a bad ECM or are there other explanations. How can you test to see if the ECM is faulty?
Tanks,
Dale