fmw63 Posted May 19, 2015 Report Share Posted May 19, 2015 Went to look at a 92 Deville for sale today. It was a nice car, but made a strange noise.While sitting there in park, after revving the engine up to maybe 2k, after releasing thepedal, in 3 or 4 seconds there was a snap sound. Not a pop, like a backfire, notas big as a clunk. I was thinking maybe the isc motor, but the sound was "larger" than that.Any ideas what that could be? Link to comment Share on other sites More sharing options...
fmw63 Posted May 20, 2015 Author Report Share Posted May 20, 2015 No ideas? Link to comment Share on other sites More sharing options...
Logan Posted May 22, 2015 Report Share Posted May 22, 2015 25 year old car?....dunno.. I guess worse case would be a cracked fly wheel....maybe loose torque converter bolts... Maybe something simple like a bad serpentine belt.. Logan Diagnostic LLC www.airbagcrash.com www.logandieselusa.com www.ledfix.com www.ledfix.com/yukontaillightrepair.html www.ledfix.com/ledreplacements.html www.ledfix.com/j42385toolrental.html Link to comment Share on other sites More sharing options...
barczy01 Posted June 19, 2015 Report Share Posted June 19, 2015 is it in the transmission maybe? I remember these cars having a pop in the trans after letting off the gas and letting it idle in park. Link to comment Share on other sites More sharing options...
fmw63 Posted August 23, 2015 Author Report Share Posted August 23, 2015 That sounds exactly like it. Do you know the cause actually is? Didn't buy the car, but still curious. Link to comment Share on other sites More sharing options...
barczy01 Posted August 24, 2015 Report Share Posted August 24, 2015 These cars were making that noise brand new. So I think your fine. I am not sure what it is but its from the transmission. Link to comment Share on other sites More sharing options...
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