Truck dies but no codes found
Thread Starter
Joined: Jul 2006
Posts: 3
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Truck dies but no codes found
My 97 Ram 1500 5.9 keeps dying. I hooked up a snap-on scanner but it shows "no codes present ok to drive" It is an intermittant problem and am usually able to nurse it home. Someone told me a fuel pump could do that but I want to be sure before I am out 300 bucks. Any thoughts?
Record Breaker
Joined: May 2005
Posts: 2,415
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From: Wisconsin
RE: Truck dies but no codes found
According to the service manual it's 49 [&:]
(5) Start engine and bring to normal operating
temperature.
(6) Observe test gauge. Normal operating pressure
should be 339 kPa +/–34 kPa (49.2 psi +/–5 psi).
(7) Shut engine off.
(8) Pressure should not fall below 30 psi for five
minutes.
(9) If pressure falls below 30 psi, it must be determined
if a fuel injector, the check valve within the
fuel pump module, or a fuel tube/line is leaking.
(10) Again, start engine and bring to normal operating
temperature.
(11) Shut engine off.
temperature.
(6) Observe test gauge. Normal operating pressure
should be 339 kPa +/–34 kPa (49.2 psi +/–5 psi).
(7) Shut engine off.
(8) Pressure should not fall below 30 psi for five
minutes.
(9) If pressure falls below 30 psi, it must be determined
if a fuel injector, the check valve within the
fuel pump module, or a fuel tube/line is leaking.
(10) Again, start engine and bring to normal operating
temperature.
(11) Shut engine off.
SPECIFICATIONS - FUEL SYSTEM PRESSURE -
GAS ENGINES
All Gasoline Powered Engines: 339 kPa +/- 34
kPa (49.2 psi +/- 5 psi)
GAS ENGINES
All Gasoline Powered Engines: 339 kPa +/- 34
kPa (49.2 psi +/- 5 psi)
Grand Champion
Joined: Nov 2004
Posts: 6,099
Likes: 6
From: Colorado
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Thread Starter
Joined: Jul 2006
Posts: 3
Likes: 0
RE: Truck dies but no codes found
Fixed it, done. The fuel pressure was 50psi...most of the time. I hooked the guage up and drove it around until it died again. Right before it died the pressure bled off to about 10psi. Turns out the pressure regulator was being eratic. Put in a fuel pump module which includes the filter and regulator and now she's fine. Bought a Carter brand pump from NAPA for $294.00. Looks like a much better pump than stock. Instead of having a small pick-up screen it has a very large pre-filter.