1991 Chevrolet Suburban TRUCK WILL NOT STAY RUNNING

1991 CHEVROLET SUBURBAN
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ALCANTARA143
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TRUCK WILL START.
WILL NOT STAY RUNNING.
ONLY IF YOU KEEP FOOT ON ACCERLERATOR, RELEASE AND TRUCK DIES.
DRIVING, VEHICLE WILL NOT EXCEED 20 MPH.
REPLACED AIR MASS SENSOR,
REPLACED TPS SENSOR,
REPLACED PLUGS,
REPLACED ROTOR CAP AND DITRIBUTOR.
WAAS UP???????????
Jul 18, 2013 at 10:35 AM
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JDL
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Does the vehicle have TBI fuel injection? If so, have a helper crank it while you visually check for injector spray pattern. Check fuel pressure, With TBI around 10 psi.

Can you check for applicable mil codes? You should be able to check those codes, yourself. Use a jumper wire at the A & B terminals for the data link connector. Turn key just till the dash lites come on, no further. The mil on the dash starts flashing, you count the flashes to get the codes. Your looking for two digit codes.

Jul 18, 2013 at 1:00 PM
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ALCANTARA143
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WOW!!!!!!!!!!!!!
REALLY?????????????????

OF COURSE IT HAS TBI!!!!!!!!!!!!

D.A.
THAT'S THE FIRST THING A REAL MECHANIC CHECK'S!!!!!
1. FUEL
2. SPARK
3. IGNITION
Jul 18, 2013 at 2:07 PM
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JDL
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Yes, I always start with the basics. Have a good day.
Jul 19, 2013 at 7:31 AM