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Truck stalls while driving

Tiny
2CARPRO JACK
  • MECHANIC
  • 11,533 POSTS
When it stalls, you need to test for fuel presssure and spark. It sounds like it may be a weak fuel pump or one that is going out, but you need to verify this with a pressure test using a gauge
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Wednesday, January 8th, 2020 AT 2:15 PM (Merged)
Tiny
BURNS.316
  • MEMBER
  • 3 POSTS
I filled the other half of the tank with premium, so there are now 3 gallons of new premium for every gallon of suspicious gas that was in the tank. The one trip home I made the truck did not hesitate or stall, even with agressive acceleration. Does this mean I had bad gas, or will filling the tank help an ailing fuel pump? I have an appointment on Tuesday to use the garage again and will check the pressure in the fuel rail, but if I don't have any problems between now and then does that mean bad gas or should I still worry about the fuel pump going out?
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Wednesday, January 8th, 2020 AT 2:15 PM (Merged)
Tiny
2CARPRO JACK
  • MECHANIC
  • 11,533 POSTS
Normally more fuel in the tank wont help a bad pump. A pressure test will help rule it out. Have you troed a product in the fuel tank to remove moisture?
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Wednesday, January 8th, 2020 AT 2:15 PM (Merged)
Tiny
BETH HUSTON
  • MEMBER
  • 3 POSTS
  • 2000 CHEVROLET S-10
  • 89,000 MILES
What is the name/names of the sensors that could be part of this problem?
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Wednesday, January 8th, 2020 AT 2:15 PM (Merged)
Tiny
BURNS.316
  • MEMBER
  • 3 POSTS
I put some heet in there last tank of gas. I have another bottle left if I should use that. Today I drove for an extended trip with no stalling, but there was a little hesitation. I also ran diagnostics from the computer and it came back with two error codes:

P0171 = Fuel system for bank one too lean.

P0133 = Response time for oxygen sensor 1 in bank 1 too slow during testing.

So I picked up a new oxygen sensor and plan to install it on tuesday. Could that have been causing the problem as described?
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Wednesday, January 8th, 2020 AT 2:15 PM (Merged)
Tiny
BETH HUSTON
  • MEMBER
  • 3 POSTS
If I let the truck sit for a few minutes then I restart it & take off again. But not for very long. That I should put that in there as well. Thank you
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Wednesday, January 8th, 2020 AT 2:15 PM (Merged)
Tiny
2CARPRO JACK
  • MECHANIC
  • 11,533 POSTS
Its posible, but check for vacuum leaks first. Low fuel pressure can cause a lean code as well
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Wednesday, January 8th, 2020 AT 2:15 PM (Merged)
Tiny
CJ MEDEVAC
  • MECHANIC
  • 11,004 POSTS
Up at the top of this page, beside "SEARCH" is a heading "REPAIR GUIDES", If you scroll thru it there are many articles "how tos/ diagnosing issues/ etc

Under "ENGINE" I picked this one up for you. Link below.

https://www.2carpros.com/articles/engine-stalls

If you kinda need guidance on things discussed in there, many are shown in that same repair guides section (such as the crank sensor, and more)

Return here with good news!

or

Need further help or more questions

If I am unable to assist further, others here very often jump in and help, or I will find someone who can for you!

The Medic
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Wednesday, January 8th, 2020 AT 2:15 PM (Merged)
Tiny
JWSTEE
  • MEMBER
  • 1 POST
  • 2000 CHEVROLET S-10
  • 4 CYL
  • 2WD
  • MANUAL
  • 119,000 MILES
My chevy S10 quite while driving.
Checked fuses, filter, fuel pump is not turning on.
Put new fuel pump on about 10,000 miles ago.
No problems since replacement until now.
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Wednesday, January 8th, 2020 AT 2:15 PM (Merged)
Tiny
BMRFIXIT
  • MECHANIC
  • 19,053 POSTS
Check the fuel module fuel pump
also check the connector at the module very common (wiring side)
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Wednesday, January 8th, 2020 AT 2:15 PM (Merged)
Tiny
ROGER1966
  • MEMBER
  • 5 POSTS
  • 2000 CHEVROLET S-10
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 200,000 MILES
2000 s10 2.2 flex fuel engine. Truck will just die going down road. But will start right back up.
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Wednesday, January 8th, 2020 AT 2:15 PM (Merged)
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Start by checking and monitoring the fuel pressure to rule out a failing fuel pump-check fuel filter
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Wednesday, January 8th, 2020 AT 2:15 PM (Merged)
Tiny
ROGER1966
  • MEMBER
  • 5 POSTS
Filter is just been changed. Pump is new.
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Wednesday, January 8th, 2020 AT 2:15 PM (Merged)
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
If it starts right back up with no problem. I suggest again you check the fuel pressure with a gauge even though its a new pump-
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Wednesday, January 8th, 2020 AT 2:15 PM (Merged)

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