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LT1 stumble below 2000rpm
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ronbunch1
New User
| Posts: 26
| Joined: 06/10
Posted: 06/25/10
05:58 PM
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My z28 has a stumble below 2000rpm after it warms up what can i do
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Posted: 06/25/10
09:32 PM
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scan for codes...
check the live data stream with a scan tool....
here is the chart of what most of the sensors should actually display...
http://repairguide.autozone.com/znetrgs/repair_guide_content/en_us/images/0900c152/80/06/7e/6a/large/0900c15280067e6a.gif
got any vacuum leaks???
got any air leaks...?????? holes in the air intake ducting between the air flow meter and the throttle body..
be sure to actually examine the flexible ducts.. they can crack in the grooves letting unmeasured air in...
how is the exhaust system... got any leaks??? can you check the diverter valve.. make sure it works properly.. that it is not dumping uncommanded air into the tubes in the exhaust manifolds..
how is your cylinder head mounted ignition coil.?????? look closely.. . are there any dust circles ??? white dots near the frame of the coil on the outside of the round windings????
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ronbunch1
New User
| Posts: 26
| Joined: 06/10
Posted: 06/26/10
07:04 PM
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i will check all those and update ya later
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