trans_am_2000

iTrader: (6)

So 3 seperate times since the build my car has died and quit like it ran out of fuel, will sometimes start and idle low and quit again, won't take fuel pedal just quits, sometimes drive 5km and does it, other times drive 20 and it doesn't, let the car sit a couple hours and fires up like nothing happens? Starting to think heat under good related? It's a 5.3 turbo, SD tuned and no 02 sensors, maf code and tps is only codes but tps voltage checked fine, can't figure it out any one see this happen before .

pcguy

Fuel pressure or dirty filter???

trans_am_2000

iTrader: (6)

Still has 58psi at the rail when it happens.

Tramminc

MAF sensor dirty

trans_am_2000

iTrader: (6)

don't have one, it's speed density tuned.

wannafbody

iTrader: (2)

Fuel pump relay?

pcguy

Depending on what was happening when you checked the gauge, it could be the filter. If the filter is clogged, the pressure would be good until the demand goes up. Causes no power, coughing and sputtering.

EDS01SS

iTrader: (30)

Had something similar to this happen years ago. Turned out to be a bad ignition relay

trans_am_2000

iTrader: (6)

pump runs and full pressure at rails

trans_am_2000

iTrader: (6)

won't run at idle with 58psi at the rails so don't thinkmits filter, computer or sensor related I think, couple hours sitting and works fine again.

Old Buzzard

How about something like a data log?
Might be some clues there.

mk3cn4

iTrader: (3)

Watch tach as you crank, I'm guessing intermittent crank sensor happening when hot. Otherwise I agree you'd need a logger. everything is just a guess otherwise

trans_am_2000

iTrader: (6)

As much as I'd love to put my hp tuners on and go break down on the highway for a couple hours I figure I'd get some ideas first.