1992 Oldsmobile Bravada, won't stay running, starts then dies,new fuel pump,filter, spark

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Sheryl L

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1992 Oldsmobile Bravada, won't stay running, starts then dies,new fuel pump,filter, spark

good,power,help? Great car when it runs. Driving down the road it just dies, now it only starts and dies. Charging system good, fuel system, lines, good, no check engine light, Injectors do not appear to be bad, new pcv valve, ran Slick 50 through to make sure no residue, mechanic is baffled, taken manifold off, cleaned and cleared all lines, what is left or has been missed? Car has low mileage and well taken care of. Started out by just dying while driving, seemed like after car would get warm and then after it sat for 30 minutes or so it would start right back up and go again, sometimes dying, but not all the time. Now can't keep it running for long, fuel is flowing. Need help with how to figure this out without spending a zillion dollars, already have spent almost $1500.00 in fuel system repairs. Mechanic is at a dead still. Please help.
 
its probably a major engine problem.
worn bearings.... cracked water jacket, engine block. The engine probably overheats before it dies out.
Most often an electrical problem is a result of a
major mechanical problem.
Free advice...
 
You didn't say this. Check the computer. A microchip might be faulty or is giving bad information to the engine mechanism.
 
there's a good possibility that you got a bad fuel pump for it ,this happened to me and i spent a lot more than you have on a car similar to that ,the reason i didn't suspect the fuel pump was that it was running and seemed to have good fuel pressure,but it didn't really have ,you could also have a bad pump relay for it,that will cause the exact same thing to happen ,your getting in deep like i did,i finally did figure it out that i had got a bad pump,even though it showed to be good it wasn't,you also need to have an electrical check done in it,those cars had some problems with electrical issues.it may take a good mechanic some time to figure it out,good luck with it.
 
You need to take the car to a different mechanic. There are many things that would cause the problem that you describe but a detailed step by step check using a "starts then stalls" flowchart should uncover the cause. There are a couple of things that are easily checked that you didn't mention as having been checked. First, unplug the MAP sensor and start the car, if it stays running, replace the sensor. Also unplug the distributor bypass connector and if the engine starts and runs, replace the distributor pick-up coil>
 
When you changed the fuel pump, did you also change the inline fuel filter?..if you did, then check the fuel lines coming from the top of the gas tank, you might have a small leak. Have you replaced the module under the coil packs...heat makes them just quit, and after they cool, they work again..then again, it could be in the ignition switch...Is the security light coming on??? email me back.
 
mattrunltd said:
its probably a major engine problem.
worn bearings.... cracked water jacket, engine block. The engine probably overheats before it dies out.
Most often an electrical problem is a result of a
major mechanical problem.
Free advice...
Click to expand...
Have u checked the restictor
 
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