st43

[st43]

my 91 sunbird 3.1 wil not rev above 2000 rpm have replaced fuelpump and filter tps crank sensor plugs wires plugs ecm cleaned throttle body i am stumped need help cleaned egr valve 5spd car does this in neatrul and in gear

[bszopi]

When in park/neutral, or when driving as well?

[st43]

When in park/neutral, or when driving as well?

all the time can't drive down the road

[Superdave]

you can find Jbody specific information here: http://www.v6z24.com/jbodyforum/repa...ooting-f8.html


is it knocking?

If i remember right, a jumped timing chain can cause similar problems. might be worth pulling the front cover and having a look.

[st43]

you can find Jbody specific information here: http://www.v6z24.com/jbodyforum/repa...ooting-f8.html


is it knocking?

If i remember right, a jumped timing chain can cause similar problems. might be worth pulling the front cover and having a look.

no knocking starts right up and idles rather smooth

[st43]

car wont rev

my 91 sunbird 3.1 wil not rev above 2000 rpm have replaced fuelpump and filter tps crank sensor plugs wires plugs ecm cleaned throttle body i am stumped need help cleaned egr valve 5spd car does this in neatrul and in gear

car wont rev

[95SleeperAcheiva]

clogged exhaust. disconnect pipe from manifold, and goose it. If it revs your converter is clogged.

Converters don't just clog and fail.
Something HAD to break it.

99% its do to rich mixture.

Check thermostat, make sure your car is reaching operating temps.

Check ECT sensor, comp may think car is cold and running too rich trying to achieve operating temps.

Check for major vacuum leaks, too much air will show lean on o2 and comp will make run rich to compensate.

If you don't check the above and correct the problem, you'll eat your new converter