[93D150LongBox]

Here's the deal...I have a '93 d150 with a 5.2, I drive it to and from work which is about 3.5 miles each way and it drives perfect. I took it on a trek today and it drove for about 20min or about 20 miles and it started shaking/vibrating badly and lost power then died. I towed it home and it started fine. My question is what could be causing this besides the O2 sensor which was replaced. Any input is appreciated.

 

[ramfam]

Vacuum leaks, ASI motor. Ignition coil or pickup in distributor. Did you get check engine light? If so or even not check codes. Turn ignition on and off 3 times do not start just turn it on and off. After 3rd leave it in run the light will flash 2 digit code. Example 12 will be 1 flash, pause then 2 flash pause. The end code or no codes will be 55 five flashes pause then 5 flashes

 

[ramfam]

Then you should if you find code other then 12 or 55 be able to look it up now if your truck didn't come with a/c it will give you a false code about a/c clutch I can't remember what it is but you can ignore that one.

 

[Warlock III]

Hmmm, clutch fan/fan clutch?

 

[93D150LongBox]

The cooling system seems to be fine, I'm gonna replace the ign. pickup and coil to see if that helps.

 

[Warlock III]

I'd check the hall effect/ignition stator in the dist. They are notorious for shutting the truck down once it's warmed up.

The only reason I suggested the fan clutch was because of the shaking.

 

[93D150LongBox]

It only starts to shake and have some detonation when it loses power about 15-20min into the drive, before then it idles/runs like a champ.

 

[Gen1dak]

Detonation, eh? Oh I can't imagine what could cause that. Guess I'll just have to take a stab in the dark. Oh, I dunno....... Could it beeeeeee..... SATAN???!!!!!!
:FIREdevil:
Or maybe just that plenum gasket. Isn't that special.

 

[KevenP]

Detonation, eh? Oh I can't imagine what could cause that. Guess I'll just have to take a stab in the dark. Oh, I dunno....... Could it beeeeeee..... SATAN???!!!!!!
:FIREdevil:
Or maybe just that plenum gasket. Isn't that special.

LOL. I don't care who ya are, that's funny right there!! :gy:

 

[Gen1dak]

Could be an EGR issue as well.

 

[BP1962]

How was this problem resolved.

 

[BP1962]

How was this problem resolved?