Abrie
New Member
Hi All
Thanks for accepting me. I recently bought myself a 2003 Jeep Cherokee 2.8 CRD for a great bargain. It had one problem, it doesn't start. Initially i thought how difficult can it be to diagnose the problem. Well the last two weeks since I've bought it I've been losing my hair, doing research till the sun comes up. I've tried everything. On of our local 4x4 communities here in South Africa recommended you guys, i really hope you can help me, so here it goes.
The Jeep is turning over but will not start. I've bought a elm327 obdii reader and found no errors on the ecu. I've measure for voltage on the injectors and found that they are not firing. Tested the asd relay and tested that there is power when switched on. When switched the fuel quantity valve actuates. I've read that if the rev counter lifts while cranking the camshaft sensor is working. I've replaced the crankshaft sensor with an OEM one. Before i plugged in the new crankshaft sensor I've measure the connector coming from the ecu and found on the 3 pins while switched on 0v, 2.5v, 2.5v. The injector pump was replaced by the previous owners by n refurbished one. I've bleaded the system till there is no more air in the system and measured the fuel pressure sensor on the rail it goes up to about 3.7v while cranking. Is there any other sensor or condition that can cause the injectors not to get power. Temp sensor, oil pressure sensor, battery temp sensor, sensors on gearbox?
Thanks in advance
Thanks for accepting me. I recently bought myself a 2003 Jeep Cherokee 2.8 CRD for a great bargain. It had one problem, it doesn't start. Initially i thought how difficult can it be to diagnose the problem. Well the last two weeks since I've bought it I've been losing my hair, doing research till the sun comes up. I've tried everything. On of our local 4x4 communities here in South Africa recommended you guys, i really hope you can help me, so here it goes.
The Jeep is turning over but will not start. I've bought a elm327 obdii reader and found no errors on the ecu. I've measure for voltage on the injectors and found that they are not firing. Tested the asd relay and tested that there is power when switched on. When switched the fuel quantity valve actuates. I've read that if the rev counter lifts while cranking the camshaft sensor is working. I've replaced the crankshaft sensor with an OEM one. Before i plugged in the new crankshaft sensor I've measure the connector coming from the ecu and found on the 3 pins while switched on 0v, 2.5v, 2.5v. The injector pump was replaced by the previous owners by n refurbished one. I've bleaded the system till there is no more air in the system and measured the fuel pressure sensor on the rail it goes up to about 3.7v while cranking. Is there any other sensor or condition that can cause the injectors not to get power. Temp sensor, oil pressure sensor, battery temp sensor, sensors on gearbox?
Thanks in advance