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27/07/2023 10:57 am
Topic starter
- 1999 gmc savana 1500 5.7L 350 v8 vortec
- 360,000 miles
- automatic
- vans been running fine no issues until one day it stalled when coming to a stop and wouldn’t crank back up
- I’ve checked the fuel pump relay it’s good I’ve checked the pressure at the fuel line by cranking it open and it would flow out not a spray
- i Hooked up fuel pressure guage and wasn’t getting anything
- ive cleaned the fuel injectors.
- I am only getting one trouble code and it’s a p0103 for a maf sensor high circuit frequency
- I figured it’s not the maf causing to not turn over because it’ll start without one just don’t want to go spending money on a bunch of useless stuff I really hope you can get back to me soon Scotty I love your channel and watched you for years
2 Answers
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27/07/2023 1:26 pm
i Hooked up fuel pressure guage and wasn’t getting anything
try putting 12v directly to the fuel pump. If you still don't get 50-60 psi then you need a new pump
