truck is stalling

boostedjd · Mar 26, 2013

i just replaced my timing belt, tensioner pulley, and spark plugs 2 days ago and then on my way home when i was driving on the highway it kept sounding like it was backfiring and then i would completley lose power but then i could let it sit for a couple min and it would start right up and it would do this about every 5 min but it only seems to do this on the highway as when i got to town it i drove thru the city and it didnt stall at all. Anyone know what could cause this?

Ordak · Mar 26, 2013

Check your Catalytic converter when it stalls out, if it is glowing orange/red your CAT is clogged and you should punch it out or replace it. Also check/change your fuel filter if you have a high mileage vehicle. If you have a throttle body, clean it even if there is seemingly small amount of carbon because my dad had a similar problem with his 2006 f-150. If you clean the throttle body do not spray the throttle body cleaner directly on the throttle body, spray it on a rag and then clean it. If you spray it directly carbon chips will get run through your engine. Let me know if this helps you and could you tell me what year your truck is and if it fuel injected or not.

Tedybear · Mar 26, 2013

boostedjd said:
i just replaced my timing belt, tensioner pulley, and spark plugs 2 days ago and then on my way home when i was driving on the highway it kept sounding like it was backfiring and then i would completley lose power but then i could let it sit for a couple min and it would start right up and it would do this about every 5 min but it only seems to do this on the highway as when i got to town it i drove thru the city and it didnt stall at all. Anyone know what could cause this?

Pick up a Vacuum gauge and port it to your intake. Get one with a long hose. Drive the truck around and see what the reading is when the truck acts up. If it acts up and the engine vacuum nose dives? Pull over and put your hand near the exhaust. (no kidding...don't touch it!) If it feels restricted or not really there? Peek at your converter(s) and see if they are glowing with high heat. This does sound like a plugged up converter---but it could also be a timing related issue.

Good luck and keep us posted.

(do not punch out the converter---some of us do like clean air <G>)

S-

Ordak · Mar 26, 2013

Air? who needs air? I am joking of course, but i would replace the CAT before punching it out because it does produce more emissions.

Andy D · Mar 26, 2013

If the truck ran OK before you worked on it, then check your work over, before you start replacing anything else.

boostedjd · Mar 27, 2013

i checked the cat and it is fine. Today when i was driving it it stalled out and would crank all day but intemittenly started and then would drive for a half mile and stall out again and do the same thing over. Think the fuel pump is bad or fuel filter clogged?

boostedjd · Mar 27, 2013

figured it out

after my truck completley died i had my buddy tow it and then tried to start it up again and noticed the battery was dead and got to looking and figured out that when i took my serpentien belt off to do my timing belt my serpentine belt tensioner seemed hard to move so it turned out taht it was bad so everytime i put on the throttle the tensioner would move and cause the belt to jump because there was no tension on it

Tedybear · Mar 27, 2013

boostedjd said:
after my truck completley died i had my buddy tow it and then tried to start it up again and noticed the battery was dead and got to looking and figured out that when i took my serpentien belt off to do my timing belt my serpentine belt tensioner seemed hard to move so it turned out taht it was bad so everytime i put on the throttle the tensioner would move and cause the belt to jump because there was no tension on it

Sounds like progress!!!

S-

killj0y · Apr 5, 2013

also when was the last time you replaced your fuel filter/pump?

truck is stalling

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