'96LS400 misfire and p0115
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'96LS400 misfire and p0115
Need some guidance please. Neighbour lady has a 96 LS400. Issue started with a P0115 code. Turned to a P3006 and list the coolant code. I replaced #6 injector and it sat and idled for 20 mins as smooth as can be. Revved it a few times. She took it to get gas and put some injector cleaner in it. Ran fine going there but on the way back, started missing and smoking. Put the code reader on and got a P3002 and 3008, no 3006. New plugs and leads got installed this past weekend. Throwing the P0115 now and can't get any other codes. I didn't drive it far due to the volumes of smoke. Any suggestions boys and girls?
Thanks in advance.
Thanks in advance.
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Thanks
I am just trying to understand the misfire and smoke. The smoke is definitely excess gas but trying to understand that coming from the coolant sensor.
#4
Courtesy of http://www.obd-codes.com/p0115
symptoms of a P0115 DTC code may include: MIL (Malfunction Indicator Lamp) illumination will always occur Vehicle may be hard to start May blow a lot of black smoke and run extremely rich Engine may want to die or backfire in tailpipe Engine may run lean and increased Nox emissions may be apparent (Requires gas analyzer) Cooling fans may run all the time when they shouldn't be, or not at all when they should be Causes Usually the cause can be traced to a bad ECT sensor, however that doesn't preclude the following: Wiring or connector damaged at sensor Open or short in reference or signal circuit Open or short in signal circuit Bad PCM
symptoms of a P0115 DTC code may include: MIL (Malfunction Indicator Lamp) illumination will always occur Vehicle may be hard to start May blow a lot of black smoke and run extremely rich Engine may want to die or backfire in tailpipe Engine may run lean and increased Nox emissions may be apparent (Requires gas analyzer) Cooling fans may run all the time when they shouldn't be, or not at all when they should be Causes Usually the cause can be traced to a bad ECT sensor, however that doesn't preclude the following: Wiring or connector damaged at sensor Open or short in reference or signal circuit Open or short in signal circuit Bad PCM
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I appreciate your help. I will go ahead and buy a sensor, the car has 200k miles on it so not going to hurt. I can check for a short once I get it all apart.
#6
Coolant temp sensor is a key sensor. When cold it will tell the ecu to enrich the fuel just like the old choke days. If its not working correctly and after the engine warms up it will then over richen the mixture and cause black smoke and misfiring.
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#8
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Need some guidance please. Neighbour lady has a 96 LS400. Issue started with a P0115 code. Turned to a P3006 and list the coolant code. I replaced #6 injector and it sat and idled for 20 mins as smooth as can be. Revved it a few times. She took it to get gas and put some injector cleaner in it. Ran fine going there but on the way back, started missing and smoking. Put the code reader on and got a P3002 and 3008, no 3006. New plugs and leads got installed this past weekend. Throwing the P0115 now and can't get any other codes. I didn't drive it far due to the volumes of smoke. Any suggestions boys and girls?
Thanks in advance.
Thanks in advance.
Don't you have any AT shifting problem?
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I am not aware of any shifting issues, mind you, I drove the car for the first time yesterday. Only showing the P0115 now. Tried to kick some more codes by taking it for a drive around the block but had to turn back before I got arrested for polluting the air with all the smoke.
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