having a issue

[mommyslittlemonster]

hey everyone love the forum. i have been lurking around for quite some time now. so i am having a problem with my 97 f350. when i start it i have to let it idle for about 15-20 when the temp gauge starts to register before i can go anywhere. if i dont wait and decide to take off it will not rev past 1k rpm and have to floor the pedal or else it will just die. i have looked around and cant find any info about this issue. any info will help. thanks

[jesilvas]

May have a weak thermostat. Mine takes about 10 mins of idling to start to register.
The loss of power is your EBPV. There is a sticky about it in the 7.3 section.
Winter Operation, Hard Starting, Hissing Sound Etc...
Nothing much to worry about.

[mommyslittlemonster]

well the thing is it will do this no matter if its hot out or cold out (last couple weeks i have seen high 60s to low teens) i always thought that the ebvp did this in cold weather not when its warm as well

[jesilvas]

It closes depending on parameters that the PCM receives like EOT and other stuff. It may be incorrectly operating cause they can mess up. You can unplug it from the base of the pedestal and if it doesn't do it anymore, that was it.

[mommyslittlemonster]

sounds good. i will try that. when i unplug it will it stay open?

[mommyslittlemonster]

just searched and answered my own question. thanks for the help.

[mommyslittlemonster]

so i unplugged it and i am still having this issue. also when on the highway its starting to bog down and has a slight shake to it

[jesilvas]

Ok well what about maintenance? Fuel filter, oil and filter?
Your fuel pump could be going out or the FPR screen could be clogged. Should check pressure.
Your UVCHs may be worn out, they should be checked too.

[mommyslittlemonster]

Originally Posted by jesilvas

Ok well what about maintenance? Fuel filter, oil and filter?
Your fuel pump could be going out or the FPR screen could be clogged. Should check pressure.
Your UVCHs may be worn out, they should be checked too.

i do oil and oil filter every 7500-8k fuel filter i do with every oil change except for the last one i forgot to get one. i can check fuel pressure. what is the pressure it should run at. also where is the fpr screen and what is a uvch? new to diesels so i am sorry for all the questions i just really like this truck. but like it better when it runs right.

[jesilvas]

You might wanna do oil changes a little more often. 7.5k at the most is what i do. around 5k is better because of how hard the HEUI system is on oil
Pressure should ideally be around 60-65 but you wanna see minimum 50-55 I'd say. Check it idling and under WOT.
Do some searches for those two. There's a ton of threads about them. Someone just made a writeup on the FPR screen.