I'm about ready to give up on my favorite excursion. It died several months ago and due to my lack of time to work on it, the diagnosis has been slow but here is the situation.....
2000 Ford Excursion 7.3 119,000 miles
It died on us as we were heading on a trip. So I towed it home. 1st thing I did was change the Cam Pos Sensor because it had the code calling it "intermittent". I believe that code was thrown due to my excessive cranking. That didn't solve the problem. So I used my scanner and found that under cranking my ICP pressure would start at zero and after about 8 seconds only build to 30-35psi. I pulled out the pressure sensor and put my mechanical guage on it to verify that my pressure was literally almost zero. It told me the same thing. So I thought IPR, or HPOP. I swapped IPRs with my 2002 f350 (that runs) and still no start. I then swapped pumps. The Excursion had a stealth srp1.1 and my f350 had an adrenaline pump. I swapped them and the f350 started right up with the stealth pump, but my ex is still dead now with the adrenaline. I replaced my ipr pigtail on the ex. Still no start. I tested the voltage to the wires on the IPR pigtail and I get the same readings on them as I do on my F350 (that runs). (The red wire shows just under 12 volts with the key on and yellow wire showed .3 volts with key on). Then I tested my low pressure oil pump. After cranking a few seconds I get up to 60 psi. So I believe that my low pressure pump is good aswell.
I AM RUNNING OUT OF IDEAS? SUGGESTIONS? I AM ABOUT READY TO TAKE IT TO A SHOP AND THAT REALLY HURTS MY PRIDE
The only thing that keeps coming into my mind is that when I unplug the IPR on my f350 it wont start or build icp pressure like my ex. So essentially my ex acts like the ipr is unplugged..... but I tested the voltage and it shows good? If there is more accurate testing measures than what I have done or more test please share! Thanks sooo much in advance
2000 Ford Excursion 7.3 119,000 miles
It died on us as we were heading on a trip. So I towed it home. 1st thing I did was change the Cam Pos Sensor because it had the code calling it "intermittent". I believe that code was thrown due to my excessive cranking. That didn't solve the problem. So I used my scanner and found that under cranking my ICP pressure would start at zero and after about 8 seconds only build to 30-35psi. I pulled out the pressure sensor and put my mechanical guage on it to verify that my pressure was literally almost zero. It told me the same thing. So I thought IPR, or HPOP. I swapped IPRs with my 2002 f350 (that runs) and still no start. I then swapped pumps. The Excursion had a stealth srp1.1 and my f350 had an adrenaline pump. I swapped them and the f350 started right up with the stealth pump, but my ex is still dead now with the adrenaline. I replaced my ipr pigtail on the ex. Still no start. I tested the voltage to the wires on the IPR pigtail and I get the same readings on them as I do on my F350 (that runs). (The red wire shows just under 12 volts with the key on and yellow wire showed .3 volts with key on). Then I tested my low pressure oil pump. After cranking a few seconds I get up to 60 psi. So I believe that my low pressure pump is good aswell.
I AM RUNNING OUT OF IDEAS? SUGGESTIONS? I AM ABOUT READY TO TAKE IT TO A SHOP AND THAT REALLY HURTS MY PRIDE
The only thing that keeps coming into my mind is that when I unplug the IPR on my f350 it wont start or build icp pressure like my ex. So essentially my ex acts like the ipr is unplugged..... but I tested the voltage and it shows good? If there is more accurate testing measures than what I have done or more test please share! Thanks sooo much in advance
