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Sedans Chevrolet Lumina Chevrolet Lumina Maintenance and Repair
133 messages, Last post on Sep 04, 2009 at 3:02 PM
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Hey fellas, Wife's got a 99 lumina 3.1 liter with a rebuilt engine that has approx. 25,000 miles. Always seem to perform well with little maintenance and always kept fluids checked. Yesterday she states that all at once it started stalling, missing and making awful noise. This was about a mile from house. After a few stalls she made it home. EXACTLY as described when I fired it up however, along with the bucking, missing and stalling comes an awful noise... a tapping that won't go away. I was hoping perhaps I might get lucky and the noise could be from misfires and fuel restriction. Changed fuel filter today and cleaned throat with B-12. Same thing. Seemed noise was coming from front of engine around idler pulley. Checked it and no problem with idler. Took entire belt off and started again and noise is still prevalent with same miss, buck and stalling present. Disconnected front plug wires (wires closest to bumper) and they are firing strong. I'm in a wheelchair and the other wires below coils are rather tough for me to get to. Got to climb on engine to pull a wire but too much trouble to get out, start engine and get back on top to pull another to check for fire. I don't really think that is causing the noise (misfires) and it is certainly coming from engine. Perhaps I am wrong. Could anyone enlighten me a bit as to the causation of this?
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Replying to: teecraw (Nov 01, 2008 2:58 pm) Any suggestions as to what I should be getting when testing compression if this is the problem?
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Replying to: teecraw (Nov 02, 2008 5:58 am) With symptoms described in first message and numbers above, does anyone have any thoughts?
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Replying to: teecraw (Nov 02, 2008 3:56 pm)
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Replying to: Mr_Shiftright (Nov 02, 2008 6:00 pm)  #!) yet did not see anything unusual. Spun over engine a few times. Minimal side to side movement on rocker arms. No signs of broken springs. Everything appears tight. Not sure how I check for collapsed or sticking lifter. ????
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Replying to: teecraw (Nov 03, 2008 2:59 pm) Also can you see the valve stems go up and down when you crank the engine? Any one hanging up? Unfortunately, you have an UHC (underhead cam--that's kind of a joke I'm making here) so you can't view the cam lobes. I guess you could run some additive that is extremely high detergent--no harm done at this point. Otherwise, with such a variation in compression (did you test WARM, throttle open?), you may have to pull the heads if nothing apparent shows up. My only other idea is that your exhaust system is totally plugged up, creating huge back pressure and keeping the cylinders from proper evacuation of gases.
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Replying to: ajkeen (Apr 03, 2007 8:42 am) |
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| I have a 94 lumina z34 replaced cam sensor after no spark ran for 40 mi before it died again changed injectors, computer, fuel pump, plugs and wires, upper and lower intake gaskets, coil pack, and timing belt i now have dead spot in one or two of the cylinders and still wont start can anyone tell me wats wrong really frustrated with it | |
| my DIL has a 96 lumina car. was driving drunk and somehow managed to ram a tree limb up under the car. has had transmission problems ever since. It does not shift correctly. Son, budding mechanic, tried fixing solenoid. not the problem. any ideas? | |
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Replying to: mcarbone (Aug 14, 2007 1:35 pm) |
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