Join Date: Dec 2012
Location: Chesterland, OH
2002 Intrepid 2.7 (crank, no start, no spark)
Looking for a bit of help. Have a 2000 Intrepid (2.7L) where the timing chain bracket went so I rebuilt the engine. The car itself was not in good shape, so I picked up a 2002 Intrepid w/ the same 2.7 engine.
Issue: Cranks, no start, no spark
2002 Dodge Intrepid Body (including PCM)
2000 2.7 Engine
2002 2.7 Engine Wiring Harness (to match up with the PCM)
2000 Transmission Wiring Harness
Engine Temperature Sensor (top of V) is from the 2000, spliced into 2002 harness.
Crank Sensor is 2002 installed in the 2000 transmission, due to engine harness swap.
The first DTCs that were set involved the 1/2 and 2/2 Heater Circuits. There appeared to be a broken wire on the transmission harness. I ran a new wire and those DTCs cleared. Original car never had an O2 wiring issue. It then complained about a fuel relay issue (forget the DTC) but I heard the pump, tested power to the pump, tested the relay, etc -- that DTC is now gone (issue resolved itself?). However the O2 sensor issue came back - still involving both post-cat O2 sensors. From what I gather, the post-cat sensors should not prevent the car from running. I ordered new non-OEM O2 sensors (qty 4) and have them plugged in but not installed in exhaust.
Current DTCs are P0036/P0056 which involve O2 Sensor Heater Circuits (1/1, and 2/2).
There is no spark (tried two different coil packs, two different cylinders). 12v is provided to the coilpack for KeyOn, so its not the ASR.
Tried starting with Camshaft Sensor disconnected - still no start/no spark. Tested the Camshaft Pos Sensor -- seeing it switch between 5v and 0v when manually turning engine over by hand.
Also tested the Crank sensor - and it to cycles between 5v and 0v. Interesting though - there is always 5v applied to the crank sensor, even with KeyOff.
Any suggestions on where to look next?