FullSizeBronco.com - 78 - 96 Ford Bronco offroad club, forums, tech, installs

HHH69 · 11-05-2009, 07:09 AM

Ok, I did search for this but couldn't find any relevant info. I took my truck to the smog shop yesterday and the guy said it would run fine at 14 mph but when he got it to 15, it would keep surging and kicking him out of the smog system. And apparently it can only kick him out 3 times and then he cant do it anymore.

He said it passes evap though.

So, does anyone know what might cause it to surge like that? I never notice it when driving. It does surge a little after I start it when it is cold.

HHH69 · 11-07-2009, 08:32 AM

Help?

11-05-2009, 07:09 AM	#1
HHH69 Registered User Join Date: Sep 2007 Location: Roseville, CA Posts: 349 iTrader: (0) Bronco Info: 1989 F150 XL, 302 c.i. V8 with AOD, 2wd Shortbed HHH69s Garage	89 F150 surges at 15 mph Ok, I did search for this but couldn't find any relevant info. I took my truck to the smog shop yesterday and the guy said it would run fine at 14 mph but when he got it to 15, it would keep surging and kicking him out of the smog system. And apparently it can only kick him out 3 times and then he cant do it anymore. He said it passes evap though. So, does anyone know what might cause it to surge like that? I never notice it when driving. It does surge a little after I start it when it is cold. __________________

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

		FSB Forums > Bronco Discussions > 1980-'96 Bronco Tech
89 F150 surges at 15 mph

Remove Advertisements Sponsored Links
FSB Forums Advertisement

11-07-2009, 08:32 AM	#2
HHH69 Registered User Join Date: Sep 2007 Location: Roseville, CA Posts: 349 iTrader: (0) Bronco Info: 1989 F150 XL, 302 c.i. V8 with AOD, 2wd Shortbed HHH69s Garage	Help?