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my [font=verdana, geneva, lucida, 'lucida grande', arial, helvetica, sans-serif][font=verdana, geneva, lucida, 'lucida grande', arial, helvetica, sans-serif]truck[/font][/font] runs great untill it warms up then it spits & sputters when driveing it i replaced the following parts,tfi-1v [font=verdana, geneva, lucida, 'lucida grande', arial, helvetica, sans-serif][font=verdana, geneva, lucida, 'lucida grande', arial, helvetica, sans-serif]ignition [/font][font=verdana, geneva, lucida, 'lucida grande', arial, helvetica, sans-serif]coil[/font][/font],tfi-1v ignition [font=verdana, geneva, lucida, 'lucida grande', arial, helvetica, sans-serif][font=verdana, geneva, lucida, 'lucida grande', arial, helvetica, sans-serif]control [/font][font=verdana, geneva, lucida, 'lucida grande', arial, helvetica, sans-serif]module[/font][/font],water pump,thermostat, temperature sending unit i checked the iat sensor ( air charge [font=verdana, geneva, lucida, 'lucida grande', arial, helvetica, sans-serif][font=verdana, geneva, lucida, 'lucida grande', arial, helvetica, sans-serif]temperature [/font][font=verdana, geneva, lucida, 'lucida grande', arial, helvetica, sans-serif]sensor[/font][/font]) or (intake air temperature sensor) it says it is ok i also replaced the low & high pressure fuel pumps & filters the truck is stronger & faster running then ever untill it gets hot the temp guage is working fine if anybody can help it is very needed i am about to give up & send it to the scrap man i hope it is just something i am overlooking thanks in advance for your time & input it is [font=verdana, geneva, lucida, 'lucida grande', arial, helvetica, sans-serif][font=verdana, geneva, lucida, 'lucida grande', arial, helvetica, sans-serif]fuel [/font][font=verdana, geneva, lucida, 'lucida grande', arial, helvetica, sans-serif]injected[/font][/font]

 

Want to try it again without all the markup? I can't read it... the tags are filling up the message and the message is hidden and interspersed in all the tags.

 

I think I already asked him to NOT use that stuff in his first post.

If people just ignore the question is might stop.

 

Wow!!!!!!!! reading that gave me a headache!

 

I thought it was an honest mistake at first but if he's been told before...

 

i will re do my question i really need the helpi dont have any clue what happened to that sorry it didnt look like that when i typed it

 

my 86 f150 efi auto 4x4 runs great untill it gets hot then it looses power spits & sputters the parts i replaced are fuel pump high & low &fuel filters,water pump,thermostat,temperature sending unit,tfi-1v ignition control module,tfi-1v ignition coil,i checked the (iat) intake air temperature sensor also called (act )air charge temp sensor it read good both test cold then hot it runs great idles fine it has more power then ever when driveing till it gets hot then the sputtering & power loss starts it still idles fine wile acting up hit the gas & blaaahh i hope this is the rite way to do this message i really need the help maybe you can e-mail me if it is not


thanks in advance for the help & your time

goofy69 wayne

 

If the truck cools down, does it start again?

 

yes i can turn it off & on while acting up no problem

 

But it doesn't die completely?

 

no it keeps running until i turn it off after driving it & it acts up i drive it home park it & it still runs great at idle speed it just runs like crap when i give it gas i also have no cats on it to clog up

 

Have you checked the o2 sensor or the T.P.S.? I had a K-car once that would act up like that, and it was the o2 sensor. just a thought.

 

Hey goofy69, I have the same issue too. Truck runs fine cold, but when it reaches operating temp, is starts to bog on accelaration, backfire thur the intake and it dies. Stop and go driving kills the truck. It does not want to start. So I must wait for about an hour, then the truck will start. I replaced plugs, wires, ignition module, cap, rotor, coil, fuel filter. Checked all connectors, tested sensors, all TOK (test OK). A friend of asked me, when I removed the old plugs, some were they "wet". And I do remember a few of those plugs were wet. He suggest that I might have some failing fuel injectors. He saying run some injector cleaner (SeaFoam) and see what happens. If I don't see any improvements, I will replace the injectors. Question to forum members, Can I use the injectors off a mid to late 90's 5.0 motor with EFI? Plug and play?

 

no i didnot i will check it & let you know how it is thanks for the help

 

ill bet you have a timing issue! reset your ignition timing and check your module (spark box)