RE: Poppin noise WTF
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RE: Poppin noise WTF - 1/16/2008 3:40:36 PM
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Chappie99
Posts: 768
Joined: 3/14/2007
From: Methuen Ma
Status: offline
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poping? Is it the throttle body injection? Is it possible to have a bad cam? A bad cam will cause a misfire and poping sound. I am unsure of the poping sound on an injected car, but on a carbed car it will backfire through the carb if you have a bad cam.
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"Boston, the greatest sports city in America"
99 Camaro V6 3.8 liter 231 C.I.D
2002 Ram Quad Cab 4X4 4.7 Liter 287 C.I
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RE: Poppin noise WTF - 1/16/2008 3:44:04 PM
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3.4CamaroCDOG
Posts: 192
Joined: 1/5/2008
Status: offline
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wow it just got worst now it has a bad hesitation when i step on it it takes a while to get to 40
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RE: Poppin noise WTF - 1/16/2008 7:17:32 PM
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3.4CamaroCDOG
Posts: 192
Joined: 1/5/2008
Status: offline
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ok i changed the plugs again and put AC delco in and it doesnt pop that much but it still idles high and when it does pop the SEL comes on
wat could it be? a bad wire?
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RE: Poppin noise WTF - 1/17/2008 5:31:40 PM
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3.4CamaroCDOG
Posts: 192
Joined: 1/5/2008
Status: offline
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ok i changed the wires cause they had never been changed and it is idling normal at 1000 RPM's ima take it out for a test drive tommorrow and tell u if it fixed my poppin noise. Couldnt take it out tonight cause its snowing and icy :D
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RE: Poppin noise WTF - 2/26/2008 1:57:16 PM
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mstephens20
Posts: 92
Joined: 2/26/2008
Status: offline
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did u ever find the poping sound...i have the same problem with my 2000 3.8 auto...the poping is happening when under load...
i've changed the coil the moduel and the wires and i also have a light ticking noise on a cold start and it then goes away like 1 or 2 min....i get a blinkin ses light but it's a low fuel leak and thts all i get....please any help...thanx
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RE: Poppin noise WTF - 2/26/2008 2:44:23 PM
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z28pete
Posts: 5575
Joined: 8/7/2005
Status: online
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Is the check engine lite lit? To scan this car you need an OBDI scanner, and an adapter cable because GM put OBDII diagnostic connectors but kept the PCM OBDI.
If you are getting a popping noise from the intake, the engine is back firing in the true sense. Could be an ignition problem, a fuel mixture problem, a bad intake valve, or a combination. Have the coils and the ignition module tested, try a few cans of injector cleaner, do a compression test to spot any bad valves. Check the plug wires as they may be arching under load and causing misfires. Check the EGR valve as it may be hanging open.
High idle speed may be caused by a an air leak anywhere on the engine side of the throttle valve, bad IAC valve, messed up throttle valve adjustment, etc..
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Pete
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