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Discussion Starter · #1 · (Edited)
Hey guys

The basic issue: when I turn on the car, it acts as if it cannot stay on. It’s constantly like shocking almost like it wants to turn off. It does that all the way till it warms up after like 15-20 mins and then it seems to go to a normal car idle rhythm. But even at a normal car rhythm, the idling goes up and then.

Here is background of the truck and what I’ve done to it already to try to figure this out:


I purchased a 1987 f150 5.0 automatic about 5 months ago. The guy I bought it from said that the truck had an issue with the transmission and that he had sent it to get rebuilt but just stopped using the truck and so it sat there for about 2-3 yrs till I bought it.
When I tested the truck with that guy, it ran really good and nothing was wrong with it so that’s why I bought it. Then after arriving home things started to pop out. I know it’s an old truck so I was okay with fixing it, but I have not been able to figure out the issue neither have 2 mechanics I been working with.

this is what I’ve done to the truck so far
9/9/20 - oil change
9/9/20 - cooler anti freeze fully replaced
9/9/20 - 4 wheels replaced for used tires and balanced
9/13/20 - starter
9/13/20 - selonoid starter
9/13/20 - gas filter
9/14/20 - oxygen filter
Alternador - bought by previous owner,
9/14/20 - 8 genuine bosch fuel injector
9/28/20 - front dash light bulb 4 pcs
10/13/20 - steering wheel signal component replaced
10/13/20 - oxygen sensor
10/20/20 - map sensor


21/7/20 - Took the truck to a mechanic and he did
  1. Spark plugs
  2. Spark plus cables
Mobile mechanic
The following:
12/10/20 - egr valve
12/11/20 - cool temp sen
12/11/20 - antifreeze
12/11/20 - valve cover gasket 2 of them
12/11/20 - temperature sensor
12/15/20 - ignition lock w keys $7

12/30/20 - by-pass valve


Any ideas you guys have would be really appreciated thank you

Video on YOUTUBE do you can see
 

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Have you attempted pulling codes?


Sent from my iPhone using Tapatalk
 

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Discussion Starter · #4 ·
Have you attempted pulling codes?


Sent from my iPhone using Tapatalk
I tried but the mechanics machine didn’t work
And autozone does not have the type of this truck

I’m going to see if I can talk to another mechanic who can possibly let me borrow theirs
 
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