*HELP - 2000 7.3 DIES CONSTANTLY*
#16
I'll continue to follow this thread. A couple notes...
1)I know you said you're replacing the filter soon. Make it a priority. Those specter filters are pretty awful. I've seen one get sucked in by a 7.3.
2) your truck is a 2000, and is not OBD II compliant. A cheap Auto zone reader may not pull all codes being stored, even if the SES light isn't on there may be codes. It wasn't until 2002 that they started working with cheap scanners.
3) your truck SHOULD run wwithoutan ICP sensor but fixing anything g helps eliminate possible problems.
1)I know you said you're replacing the filter soon. Make it a priority. Those specter filters are pretty awful. I've seen one get sucked in by a 7.3.
2) your truck is a 2000, and is not OBD II compliant. A cheap Auto zone reader may not pull all codes being stored, even if the SES light isn't on there may be codes. It wasn't until 2002 that they started working with cheap scanners.
3) your truck SHOULD run wwithoutan ICP sensor but fixing anything g helps eliminate possible problems.
#17
Pull your cps and look at the part that goes into the timing cover... anything that looks like heat discoloration or abrasion? Check the magnet inside the cps by runnung it across some ferrous metal. It should have a fair amount of pull....
...The tach freaking out leads me to point at electrical system.
...The tach freaking out leads me to point at electrical system.
One other thing - those are AC injectors. Your truck won't run right (once it stays running) unless you have that chip replaced... with tunes for Stage 1 injectors. I hope those don't have modified nozzles.
#18
I'll continue to follow this thread. A couple notes...
1)I know you said you're replacing the filter soon. Make it a priority. Those specter filters are pretty awful. I've seen one get sucked in by a 7.3.
2) your truck is a 2000, and is not OBD II compliant. A cheap Auto zone reader may not pull all codes being stored, even if the SES light isn't on there may be codes. It wasn't until 2002 that they started working with cheap scanners.
3) your truck SHOULD run wwithoutan ICP sensor but fixing anything g helps eliminate possible problems.
1)I know you said you're replacing the filter soon. Make it a priority. Those specter filters are pretty awful. I've seen one get sucked in by a 7.3.
2) your truck is a 2000, and is not OBD II compliant. A cheap Auto zone reader may not pull all codes being stored, even if the SES light isn't on there may be codes. It wasn't until 2002 that they started working with cheap scanners.
3) your truck SHOULD run wwithoutan ICP sensor but fixing anything g helps eliminate possible problems.
#19
The tach works with the signal from the CPS... I noticed the "die" or stumble immediately follows the tach-fall. This might be a classic case of bad CPS. An intermittent CPS can cause the engine to get confused - leading to all sorts of false codes.
One other thing - those are AC injectors. Your truck won't run right (once it stays running) unless you have that chip replaced... with tunes for Stage 1 injectors. I hope those don't have modified nozzles.
One other thing - those are AC injectors. Your truck won't run right (once it stays running) unless you have that chip replaced... with tunes for Stage 1 injectors. I hope those don't have modified nozzles.
#20
2 quick things I've had happen that had similar symptoms. Not trying to be a jerk here, but how's the oil level? Low oil level will have symptoms of poor fuel pressure. Don't ask me how I know. Also, it's not uncommon for the main wiring bundle to rub against the valve cover and chafe. A bump here or there will cause an intermittent poor running problem that's hard to find. Good luck!
#21
#22
With six codes for low/high input for other sensors, I'd expect whatever is causing those codes to also affect the cam position sensor and every other sensor on the truck for that matter. Don't change the cam position sensor because of the way the tach is acting; change it because it's an aftermarket sensor. Get one from a Ford or IH dealer and put it in there. Keep the NAPA sensor for a spare and maybe put it back in after the rest of the problems are ironed out to see if it's good. And yes, the PCM is questionable. That's the other thing that's a common thread in every one of your codes. Did you figure out if you have a CA emissions truck or not yet? You really need a scan tool that can run tests like KOEO for this one.
#23
OK... sliding the CPS aside for a sec: That PCM. I wonder why the seller got rid of it. Did he part out a truck, was he shotgunning a problem and this was a spare, or did he dump a dud?
I really don't like that tach falling so rapidly - it's like its a bad connection, PCM, or CPS.
I really don't like that tach falling so rapidly - it's like its a bad connection, PCM, or CPS.
#24
With six codes for low/high input for other sensors, I'd expect whatever is causing those codes to also affect the cam position sensor and every other sensor on the truck for that matter. Don't change the cam position sensor because of the way the tach is acting; change it because it's an aftermarket sensor. Get one from a Ford or IH dealer and put it in there. Keep the NAPA sensor for a spare and maybe put it back in after the rest of the problems are ironed out to see if it's good. And yes, the PCM is questionable. That's the other thing that's a common thread in every one of your codes. Did you figure out if you have a CA emissions truck or not yet?
#25
With six codes for low/high input for other sensors, I'd expect whatever is causing those codes to also affect the cam position sensor and every other sensor on the truck for that matter. Don't change the cam position sensor because of the way the tach is acting; change it because it's an aftermarket sensor. Get one from a Ford or IH dealer and put it in there. Keep the NAPA sensor for a spare and maybe put it back in after the rest of the problems are ironed out to see if it's good. And yes, the PCM is questionable. That's the other thing that's a common thread in every one of your codes. Did you figure out if you have a CA emissions truck or not yet? You really need a scan tool that can run tests like KOEO for this one.
#26
Just to clear up what I meant by the last sentence, I was trying to say you need to be able to run tests to help diagnose the problem. When I read what I typed, it looks like I was saying you need to be able to run tests because of the PCM itself. In any case, if you have an Android device with Bluetooth, putting out $25 or so for a Bluetooth adapter, Torque Pro and Car Gauge Pro would be a good idea. Or you if you have a WinD'ohs laptop, you could order AE with the Ford enhanced bundle for about $360.
#27
With six codes for low/high input for other sensors, I'd expect whatever is causing those codes to also affect the cam position sensor and every other sensor on the truck for that matter. Don't change the cam position sensor because of the way the tach is acting; change it because it's an aftermarket sensor. Get one from a Ford or IH dealer and put it in there. Keep the NAPA sensor for a spare and maybe put it back in after the rest of the problems are ironed out to see if it's good. And yes, the PCM is questionable. That's the other thing that's a common thread in every one of your codes. Did you figure out if you have a CA emissions truck or not yet? You really need a scan tool that can run tests like KOEO for this one.
#28
Just to clear up what I meant by the last sentence, I was trying to say you need to be able to run tests to help diagnose the problem. When I read what I typed, it looks like I was saying you need to be able to run tests because of the PCM itself. In any case, if you have an Android device with Bluetooth, putting out $25 or so for a Bluetooth adapter, Torque Pro and Car Gauge Pro would be a good idea. Or you if you have a WinD'ohs laptop, you could order AE with the Ford enhanced bundle for about $360.
#29
#30