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View Full Version : 1995 240sx Cranks, Starts, and dies and continues to crank


cjmo
06-17-2020, 09:31 PM
Hi all

I have a 1995 Nissan 240sx (S14) with a KA24DE running in it with a J7 ECU, or a 1997 Automatic ECU. When I first got the car it was running but since, the head gasket blew and so I've replaced it. I've rebuilt the head of the motor and seem to have compression in each of my cylinders as well as spark with brand new spark plugs and coils. I don't think I'd hear the engine turn over a few strokes if it wasn't igniting properly. I've tried realigning my distributor twice and nothing seems to work. The error codes I have go as follows






13 (Engine Coolant Temperature Sensor) (I've replaced it and don't know why that's still not working, maybe wiring)

41 (Intake Air Temperature Sensor) (I haven't had one working previously)

42 (Fuel Temp Sensor) (Not sure about this one)

81 (EVAP Bypass vacuum) (The EGR has been deleted previously, don't know)

83 (Manifold Absolute Pressure Sensor) (This one I don't know how to fix, assumed it meant there is a vacuum leak somewhere)

84 (TCM Diagnosis communication malfunction) (Was told you get this error because it is an ecu for an automatic on a manual)

87 (EVAP Canister Purge) (don't know)

93 (EVAP)

13-2 (MAP/BARO switching valve)

Link for pics -> https://www.nissanforums.com/threads/1995-240sx-cranks-starts-and-dies-and-continues-to-crank.273854/

Let me know which sensors you think I should replace/how to bypass any codes

I've tried a new mass air flow sensor, it hasn't worked.

jedi03
06-19-2020, 08:50 AM
if you had the head off i would recommend check your physical timing is 100%, make sure you get spark an fuel as well...ground plug against head for spark *carefully* and pull fuel rail off intake and crank should spray a little

S14rebuild
06-19-2020, 11:18 AM
Heck timing and grounds

cjmo
06-22-2020, 10:39 AM
So little update:

Got the car running, it turns over. Bad news is it bounces between 1000 and 2000 rpms and doesnt go over 2000 rpms. I'll be trying out that other MAF sensor later to see if it does the trick and makes it all work.

NukeKS14
06-22-2020, 09:23 PM
So little update:

Got the car running, it turns over. Bad news is it bounces between 1000 and 2000 rpms and doesnt go over 2000 rpms. I'll be trying out that other MAF sensor later to see if it does the trick and makes it all work.

Sounds more like timing to me too, possibly mechanical. What did you do to get it running? Have you put a timing light on it?