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Buick Stalls

nobody05

By nobody05
in Automotive Information Sharing

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nobody05 Community Regular

nobody05

Posted
Posted

1990 Buick that starts no problem and runs for a few seconds then falls on face and stalls. A restart will sometimes work and sometimes stall again. 3rd time is always the charm and will run and start fine until the engine is dead cold again. new crank sensor plugs & wires recently put on. Any Ideas out there?

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JOHNBIGDOG Proficient

JOHNBIGDOG

Posted
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If you don't get a fuel pressure gauge, try cycling the key three times, them crank. give it a 15 seconds between cycles and listen for the fuel pump?

you can disconnect the Mass Air flow sensor and see if i starts up on the first crank attempt. It may turn on the Check Engine Light, but because its O.B.D.1, it will go out as soon as the sensor is reconnected, as obd1 is a dumb system.

maybe try and hold the throttle open a little while cranking. if the Idle Air Controll valve is sticking it may free itself after 3 cycles???

I'm just throwing some stuff at the wall.

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luckycrank Experienced

luckycrank

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just cleaned the honeycombing on the MAF. Still does it. Noticed that the throttle body had a thing layer of soot on the inside before the butterfly. Any other Ideas?

Did you clean the small resistor like elemment on the MAF SENSOR ?

ALSO have you cycled the key a few times and then cranked giving time for fuel pump to run beetween cycles ? ..

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