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Engine stalling?

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Check the fuel pressure if its within specs and test the fuel pump and oil pressure sending unit-
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Thursday, September 3rd, 2020 AT 12:22 PM (Merged)
Tiny
LOGICZERO21
  • MEMBER
  • 2 POSTS
Fuel pressure is fine. Fuel pump tested okay. Truck threw only one code P0108, MAP. Replaced MAP Sensor, Truck started at first crank (For a change), and died again.
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Thursday, September 3rd, 2020 AT 12:22 PM (Merged)
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Clean out the idle air control valve and also the EGR valve and the MAF sensor with an electronc cleaner CRC and see what happens
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Thursday, September 3rd, 2020 AT 12:22 PM (Merged)
Tiny
BUNDLEFLY
  • MEMBER
  • 1 POST
  • 1999 CHEVROLET SILVERADO
  • V8
  • 2WD
  • AUTOMATIC
  • 160,000 MILES
Will codes P0171 and P0174 keep a 1999 silverado 5.3 engine from starting. Will a defective MAF keep thee truck from starting. It died at red light and would crank but not start.
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Thursday, September 3rd, 2020 AT 12:22 PM (Merged)
Tiny
FIXITMR
  • MECHANIC
  • 9,990 POSTS
Check for fuel pump running and spark at plugs.
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Thursday, September 3rd, 2020 AT 12:22 PM (Merged)
Tiny
WRENCHTECH
  • MECHANIC
  • 20,761 POSTS
No, they won't prevent it from running but they are an indication that the engine was running to lean and likely starving for fuel meaning the fuel pressure was likely low. This engine requires a minimum of 55PSI to run and bad fuel pumps are common.
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Thursday, September 3rd, 2020 AT 12:22 PM (Merged)
Tiny
MABELE87
  • MEMBER
  • 6 POSTS
It could also blew a timing belt possibly but id check the fuel and spark firsr
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Thursday, September 3rd, 2020 AT 12:22 PM (Merged)
Tiny
WRENCHTECH
  • MECHANIC
  • 20,761 POSTS
NO, it can't "blew" a timing belt because it doesn't even have one.
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Thursday, September 3rd, 2020 AT 12:22 PM (Merged)
Tiny
DAKOTA21
  • MEMBER
  • 1 POST
  • 1999 CHEVROLET SILVERADO
  • 4.3L
  • V6
  • 2WD
  • AUTOMATIC
  • 109,000 MILES
One day I was driving down the road in the truck and it sputtered out and died. No security light came on nor has it ever except for when I open the door which is normal. It will turn over but won't start. It will crank for a second when you pour has in the throttle body. I checked the fuel pump and every line connected to it and it's all good. Can you help me figure out what it is? It's urgent it's my only transportation and I need to get it back running asap.
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Thursday, September 3rd, 2020 AT 12:22 PM (Merged)
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Check fuel pressure with a gauge should be 60-66 psi, these had an issue with the harness at tank and had to be replaced with about a foot of harness with new connections as well as pump. Delco supplies it with their pumps and a few others do as well.
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Thursday, September 3rd, 2020 AT 12:22 PM (Merged)
Tiny
NELOWMAN
  • MEMBER
  • 1 POST
  • 1999 CHEVROLET SILVERADO
  • V8
  • 2WD
  • AUTOMATIC
  • 180,000 MILES
In my truck you can be going down th road driving just fine but after 10 or 15 miles it just losses all power. The veicle wont die its just when you hit the gas nothing happens it just slows down untill it stops. You can pull over and let the truck sit for about 5 minutes and it will drive fine for another 10 or 15 miles and it does it again.
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Thursday, September 3rd, 2020 AT 12:22 PM (Merged)
Tiny
DOCFIXIT
  • MECHANIC
  • 18,828 POSTS
Check engine light come on during the problem.
Have you had truck checked for trouble codes?
If no codes you may contamination in fuel tank. When you start out pickup screen is clean but after driving debris clogs it up truck starves for fuel. Let it debris fall away clears pickup you drive off process starts all over.
Good luck let me know
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Thursday, September 3rd, 2020 AT 12:22 PM (Merged)

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