No ECM codes! Replaced alternator, battery, vehicle speed sensor on trans, crank shaft sensor, and complete tune up, plugs and wires and core pack and plate. Still doing the same thing. It ran perfect for 4 days after replacing the alternator but started doing it again today. Tested the alternator and it reads fine. Out of ideas here.
SOURCE: Instantanious ignition drop out
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SOURCE: Speedo stops, stays in first gear
Sounds like something internal in the trans. It will be an electrical issue, not mechanical. Only way to tell is to hook it to a machine.
SOURCE: 1991 Buick Park Avenue Ultra dies while driving.
It is most likely a sensor. It is common in these. You may check them with an ohmmeter.
You may also test relays the same way.
A vehicle needs gas and spark to run. One of them is not getting to motor. You can check fuel pressure on test port on fuel rail for fuel.
You can pull off a spark plug, plug it back into wire, lay it on top of motor, have someone else crank, while you watch for spark, Put back in, move to next plug wire.
SOURCE: 1995 Buick Lesabre Speedo inop
For
speedometer problem click the link below :--- How to trouble shoot speedometer? http://schematicsdiagram.blogspot.com/2011/06/speedometer-not-working.html ----------- http://technoanswers.blogspot.com/2012/01/1996-fiat-bravo-speedometer-not-working.html --------- http://technoanswers.blogspot.com/2012/01/speedometer-runs-backward.html ---------- http://howtobyme.blogspot.com/2011/08/warning-lights-on-and-speedometer-died.html --------- http://howtobyme.blogspot.com/2011/11/abs-brake-lights-warning-indicator.html -------- http://technoanswers.blogspot.com/2012/01/odometer-works-properly-but-speedometer.html ---------- http://schematicsdiagram.blogspot.com/2012/01/isuzu-rodeo-speedometer-is-jumping.html ----------- This will help. Thanks.
speedometer not working?
Speedometer runs backward?
Warning lights on and
speedometer died?
ABS &
Brake lights warning indicator steady on dash and speedometer not working?
Odometer works properly but
speedometer works intermittently?
speedometer
is jumping?
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