I went to start the car and ended up with no spark?

AIRAMER

MEMBER
2008 NISSAN ALTIMA
2.5L
4 CYL
2WD
AUTOMATIC
150,000 MILES

After letting us sit for the weekend I went to start the car and ended up with no spark. It’s been four months since then. I’ve replaced both crank and cam sensors, I’ve put in a new battery and spark plugs. I even sent it to Nissan. From the look of it a crash had happened to the vehicle previously and the side that was damaged was with the fuse box. They told me I needed to replace my ECM and IPDM. As well as some minor damage to my ignition coil connections to my wiring harness that was all they told me. I’ve replaced the ECM and IPDM, but I still have no spark. You’d think I would have spark now at least?

Tuesday, May 2nd, 2023 AT 3:08 PM

3 Replies

JACOBANDNICKOLAS

MECHANIC
110,101 POSTS

Hi,

Not knowing the extent of the prior damage, which is difficult to answer. However, my first suspect is the crank sensor.

Do you have a live data scan tool? If you do, check for an RPM signal when cranking. If you don't have a scan tool as mentioned, see if the tachometer moves a little when cranking the engine.

Take a look at this link and let me know your thoughts:

https://www.2carpros.com/articles/symptoms-of-a-bad-crankshaft-sensor

Take care and let me know.

Joe

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Tuesday, May 2nd, 2023 AT 8:02 PM

AIRAMER

MEMBER
2 POSTS

I changed the crank sensor and Nissan tested it with a known good sensor. And there’s nothing on my tachometer when it cranks.

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Thursday, May 4th, 2023 AT 8:40 AM

JACOBANDNICKOLAS

MECHANIC
110,101 POSTS

Hi,

If there is no RPM signal, then we likely have an issue with the wiring at the sensor or the PCM.

Do me a favor. I attached the diagnostics below for you. Take a look through them and let me know if you are comfortable performing them.

I realize you are not finding codes, so I selected a P0335 because it checks both the electrical and mechanical portions of the system.

Let me know.

Joe

See pics below.

Images (Click to make bigger)