Fuel issue
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Fuel issue
I have an 88 250 with the efi 460. Lately it has been running quite rough. I checked the codes on it and it mentioned a faulty map sensor and faulty pip sensor. I then cleared the codes and started the truck up. It ran like total **** as if multiple cylinders were misfiring, then the fan kicked on and it started running almost perfectly smooth. I took it out for a drive, got about 5 miles down the road and it acted like the fuel was instantly cut off. It came to a complete stop and it would not turn over. After turning it over 5-6 time it started to try and fire. It would fire a couple time right after i turned the key then go back to cranking like its not getting fuel. I'm kinda thinking fuel pump.
Fleet Mechanic
Joined: Jan 2013
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tossing a fuel pump at it right now would not be a good idea.
list the exact codes that you are getting and the troubleshooting gurus should be able to help you.
might also be a good idea to check for spark when you have a cranking no-start condition.
list the exact codes that you are getting and the troubleshooting gurus should be able to help you.
might also be a good idea to check for spark when you have a cranking no-start condition.
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Well I'm obviously not going to just start throwing parts at problems I was just more or less asking in case the was a common problem among this year 460efi. I know it has spark otherwise it wouldn't intermittently fire which is why I pointed to the fuel pump. I also think that would point to the previously rough idle. And, i know it doesn't necessarily indicate performance of the fuel pump, the gauge doesn't work one the front tank does not work, that just more or less says the fuel pump assembly is old.
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Fleet Owner
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From: Easton,Ks
The PIP sensor is inside the Distributor and mounted on the Stator Assembly.
Any time you get an error code for the PIP sensor you need to replace the PIP sensor.
You may get by with just blowing out the PIP sensor if there garbage around the PIP sensor.
To replace the PIP sensor you need to take the Distributor all apart down to the last part.
Or replace the Distributor with a NEW Distributor. Four out of five rebuilt or re-manufactured Distributor will have a bad PIP sensor in them as they use the old PIP sensor and that is why they were changed out in the first place.
The Stator Assembly with the PIP sensor mounted on it.
Note most auto parts stores will call this part by the wrong name. They will call it a pick-up coil but that is wrong as there is no coil in the PIP sensor.
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Any time you get an error code for the PIP sensor you need to replace the PIP sensor.
You may get by with just blowing out the PIP sensor if there garbage around the PIP sensor.
To replace the PIP sensor you need to take the Distributor all apart down to the last part.
Or replace the Distributor with a NEW Distributor. Four out of five rebuilt or re-manufactured Distributor will have a bad PIP sensor in them as they use the old PIP sensor and that is why they were changed out in the first place.
The Stator Assembly with the PIP sensor mounted on it.
Note most auto parts stores will call this part by the wrong name. They will call it a pick-up coil but that is wrong as there is no coil in the PIP sensor.
/
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From: Kentucky
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mowman98
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