Question about 1990 Buick LeSabre
Engine all of a sudden started sounding like it was going to die when stopped at light. When excellerated it actually ran better but was still missing and sounding like it was going to cut out. replaced all spark plugs and checked wires, still missing or something. want to check the fuel injectors but need pictures or instructions on how to complete this
It is more than likly going to be a bad coil pack or the ignition coil
Posted on Nov 29, 2012
You will need a fuel injector testor, about a $100, and a fuel pressure guage, about a $100, to flow test the injectors.
You can ohm check them with an ohm meter to see if one or more has shorted windings. Remove the electrical connector and test between the two pins. They should all be about the same ohms. If one is significantly lower than it is probably bad. Its best to check them when they are hot (after the engine has warmed up).
Posted on Nov 29, 2012
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Posted on Jan 02, 2017
even if you have preasure in the line that does not mean you have fuel going into the engine. you should check the injectors to see if they are spraying and if not you need to check the injector pulse to find out if the PCM is sending the signal to them to spray. to check injector pulse you will need a noide light to test the pulse it the light lights up you have pulse, but easy way to check is pull an injector and turn the engine over see if it sprays.
Posted on Aug 24, 2009
do you get fuel pump pressure, should be about 40 psi what about compression and spark on a saturn would be stronger due to many reasons one of which being different voltage of coils
Posted on Sep 30, 2009
If it's a1990 check the ECM (computer) for the number 1228253. Those ecm's are junk and get another one get the replacement that gives no trouble 16198264. Clean the ends of all three battery cables and replace bolts too.
Posted on Dec 13, 2010
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