Following a spark plug and wire change and subsequent ignition fail sensor (part 27370 38000) change the car is not running well. It turns over but need to keep foot on accelerator to keep running (still rough). The code reader is not consistent and the mis fire likely causing other issues: ignition coil issue, o2 open circuit, throttle valve circuit high, throttle valve circuit low - these codes come and go.
While car was running I pulled back the spark plug wire (connecting spark plug 1 and the coil on top of spark plug 4) and there was no sparking. I tried same with other wires and coils and there was sparking. I rotated the coils just to see if coil was bad and once again when pulled back the wire connecting to 1 there was no sparking. I changed spark plug 4 and tried again. Once again no sparking. I did not do any testing etc with spark plugs or wiring at 1 3 or 5 as they are covered with the exhaust manifold
With the key 'on':
I checked all the fuses and no bad fuses. I checked the wire harness to coil 4 and it responded the same as coil 6 - left most terminal was hot with 12v light tester. I do not have diagram of the electrical connector at the coil but have attached diagram of the wire harness leading into all the coils.
I checked the throttle valve sensor and it did not feel bound up - I did not hook it up to any diagnostic equipment as thought the ignition failure probably caused the the throttle code. I hope I put it back correctly- if you have tips on how to judge let me know.
Any idea what is is causing the 1/4 mis fire? Could the new sensor be faulty?
have the same problem?
Tuesday, July 14th, 2015 AT 9:53 AM