Question about 1990 Buick LeSabre
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Posted on Jan 02, 2017
SOURCE: 1997 buick le sabre
its the electrical connection at he fuel pump,if this is ok ask if they replaced the strainer on your fuel pump,your fuel pump is inside your gas tank ,you have to drop the tank to service,most fuel pumps are not warrantied if you dont change the strainer,when your car shuts off the sediment on the strainer falls back into the tank,but when you run your car and it sucks up the gas thru the strainer to the pump it clogs the strainer and the fuel pump cant pump,you shoiuld find out if they changed this because your forcing your fuel pump to work harder,was it a new fuel tank or used one that they put in
Posted on Jul 09, 2008
Need to pull the codes to see if the throttle position sensor is the problem,or maybe low fuel pressure,have the fuel pressure checked to make sure.
Posted on May 23, 2010
Hi, you may have a bad wire from the ECM to the back injectors. Please run the checks again with your meter set to AC and check voltage on all injectors while cranking the engine. If the back injectors are not showing AC voltage, check the continuity of the dark green wire that goes to pin C12 of the ECM. The ECM is above the passenger's feet, but you will have to remove the sound insulating panel to see it. You can check continuity of the wire without removing the ECM connector if you can make contact with the wire from the back of the connector (you can gently slice the insulation on the wire along its length--the connector involved in shown in the top right of the diagram below). Remove all of the back injector connectors from their injectors, and test the continuity of each injector connector (on the terminal with the drak green wire to the back of that pin C12 on the ECM) to the same dark green wire at the ECM. With your meter set to ohms, the resistance should be zero ohms. If not, check for a break or other issue with the wire. You can cut the wire and solder in a new one, if necessary to restore continuity. Please let me know if you have any questions, and thanks for using FixYa.
Posted on Apr 04, 2011
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