1989 olds ciera 3.3 A/T have had intermittent stalling problem no SEL light and when it stalls it always cranks right back up and will stall again does not matter hot or cold it will just start stalli

Did he clean the throttle body - plate . TPS - throttle position sensor . Check for vacuum leak ?

gas or diesel..

catalytic converter is clogged basically its stopping up your exhaust. Over time the pressure will slowly vent out, allowing your car to start, only to build up the backpressure again, stalling engine.

DTC P1599 Engine Stall or Near Stall Detected

Circuit Description
The diagnostic test checks for an engine stall or near stall and sets DTC P1599 if a stall condition is detected. A partial start where engine RPM exceeds 400 RPM and the engine does not start, will also cause DTC P1599 to set. This DTC is designed to capture snapshot data of the stall condition.

Since many things can cause a stalling condition use the snapshot taken of DTC P1599 to compare the values taken when the DTC set to the Typical Scan Data Value table. Look for conditions that could have caused the stall and how long ago the stall occurred.

3
Are any other DTCs set?
--
YES - Go to DTCs that are set
NO - Go to Step 4
4
Using a scan tool locate the Stall Data. This is the snapshot taken when the vehicle stalled and is not located with the Failure Records.
Check the MAP sensor display taken at the time this DTC was set.
Is the display more than the value specified?
95 kPa
YES - Go to Step 5
NO - Refer to Hesitation, Sag, Stumble diagnosis chart
5
One or more of the following systems may have caused the stalling condition.
• Fuel System.
• Idle Speed Control.
• Emissions System.
• Wiring and connections.
Perform Fuel System Check chart, check Test Descriptions.
Was a fault found and repaired?
--
YES - Go to Powertrain Control Module Diagnosis for Verify Repair
NO - Go to Step 6
6
Check for TCC improperly applied by a grounded TCC solenoid circuit or by transaxle hydraulic problems. Refer to Section 7 to diagnose.
Check ignition switch circuits for intermittent open to the PCM or ignition control module. Manipulate the key switch while driving to check for ignition switch intermittent or out of adjustment.
Check PCM ground and ignition control module ground.
Check for intermittent injector circuit operation.
Check the fuel PUMP ground for a loose or poor connection.
Did any of the checks above require a repair?
--
Go to Powertrain Control Module Diagnosis for Verify Repair
Refer to Diagnostic Aids

FUEL PUMP.
Have you checked the fuel flow and pressure?
If the fuel pump is over 160,000kms/100,000miles it's done.
Put in a complete assembly,if your mileage is close to above numbers you need a new pump anyway and it may (90% chance) will cure your rough running engine.The other 10 % is contaminated fuel and electrical, but as you have no codes I'll say FUEL PUMP.

no its under the car back by the gas tank and runs along the frame rail most of the time right in front of the back drivers side tire

fuel pump

Codes ? When does it stall? When hot? How long will it run after you crank it up cold? More info, Once it stalls does it crank right back up?

Try a crank sensor. It's just above the oil pan center between the engine and transmission. Look and see if the old one is cracked.

A very common for these problems is a leaking fuel pressure regulator. This leaks gas and causes extended crank times, stalling, and check engine light.


TechJK
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