Dreaded Idle Surge

Nixon1 · 07-25-2003, 11:18 PM

Yeah, it's started. It took 1100 miles of break-in before it did.. If I take it out of gear, it stalls. If it DOES stall, it's holy hell trying to get it to idle again. First question is, what causes this? Is this because the cam was installed a couple of degrees off? Second, is there a way to lessen the surging or stop it from happening? Earlier today I put it into Neutral coming to a stop light rather than giving it gas and downshifting it into Drive (the cam makes the transmission jerk when I leave it in Overdrive and decelerate)... So the car stalls very quickly..I start it back up, and it stalls again. Start it up a third time and it drops to about 200 rpms where I manage to recover it..but it keeps surging and my turning lane arrow is green. I couldn't get it to stop surging, so I brought the rpms to 1100-1200, and neutral dropped it so I could go.

If I raise my idle speed up, can I at least get rid of the stalling problem? Thanks.

bri32zz · 07-25-2003, 11:25 PM

Set your idle with your set screw to 1000 rpm. This will take care of the stalling. E-cams surge like this all of the time. If you get a custom chip this will help some.

Nixon1 · 07-25-2003, 11:34 PM

I actually lowered my idle a week ago because it had raised itself about 100 rpms somehow (dont ask, I dont know how!) and wasn't sounding quite as lopey anymore..I like it to still lope when it's in gear. If it gets that irritating though, I'll definitely do that. Thanks man.

07-25-2003, 11:18 PM	#1
Nixon1 Registered Member Join Date: Jan 2003 Location: Palm Bay, FL Posts: 432	Dreaded Idle Surge Yeah, it's started. It took 1100 miles of break-in before it did.. If I take it out of gear, it stalls. If it DOES stall, it's holy hell trying to get it to idle again. First question is, what causes this? Is this because the cam was installed a couple of degrees off? Second, is there a way to lessen the surging or stop it from happening? Earlier today I put it into Neutral coming to a stop light rather than giving it gas and downshifting it into Drive (the cam makes the transmission jerk when I leave it in Overdrive and decelerate)... So the car stalls very quickly..I start it back up, and it stalls again. Start it up a third time and it drops to about 200 rpms where I manage to recover it..but it keeps surging and my turning lane arrow is green. I couldn't get it to stop surging, so I brought the rpms to 1100-1200, and neutral dropped it so I could go. If I raise my idle speed up, can I at least get rid of the stalling problem? Thanks. __________________ '91 Mustang GT 5.0 AOD Daily Driver Current stats: NEW 302 short block, E-303 cam (@.050, 220/220, .498/.498, 110 degrees), 1.6 roller rockers, Performer RPM heads (aluminum, 1.9/1.6, 60cc chambers), Cobra intake, Granatelli 75mm MAF, Billet AFPR, Equal-Length Shorty Headers, Off-Road X Pipe, Flowmasters, 4.10 POSI 13.73 at 103.8, ~2.2 60'

07-25-2003, 11:25 PM	#2
bri32zz Registered Member Join Date: Aug 2002 Location: Canton GA Posts: 216	Set your idle with your set screw to 1000 rpm. This will take care of the stalling. E-cams surge like this all of the time. If you get a custom chip this will help some. __________________ My CAR IS GONE R.I.P----I miss YOU 331ci, 69 Windsor heads ported and shaved , Trick Flow-Intake ported,JE blower pistons, Custom cam 542 lift, 1.73 rrs, Equal length headers, BBK Hi-Flow cats, Hurst shifter, 3:73 gears, Tremec 3550 tranny,Lakewood drag suspension-90/10 in front and 50/50 in the back. Lakewood traction bars. Edelbrock 70mm tb, K&N filter, Kirban fuel reguator, Custom sub-Frame connectors,83 lb squirters, powerdyne blower with 12psi pulley, http://www.pumpoperators.com/brian/ Rice Haters Club Member #82 My wife is AWSOME!!!!!!!!

07-25-2003, 11:34 PM	#3
Nixon1 Registered Member Join Date: Jan 2003 Location: Palm Bay, FL Posts: 432	I actually lowered my idle a week ago because it had raised itself about 100 rpms somehow (dont ask, I dont know how!) and wasn't sounding quite as lopey anymore..I like it to still lope when it's in gear. If it gets that irritating though, I'll definitely do that. Thanks man. __________________ '91 Mustang GT 5.0 AOD Daily Driver Current stats: NEW 302 short block, E-303 cam (@.050, 220/220, .498/.498, 110 degrees), 1.6 roller rockers, Performer RPM heads (aluminum, 1.9/1.6, 60cc chambers), Cobra intake, Granatelli 75mm MAF, Billet AFPR, Equal-Length Shorty Headers, Off-Road X Pipe, Flowmasters, 4.10 POSI 13.73 at 103.8, ~2.2 60'

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