The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - 89 S10 4.3 Need help troubleshooting TBI/IAC Idle issue

speedygonzales · 08-04-2014, 11:06 AM

Not being familiar with non-vortec 4.3's I have to ask if the FPR may be leaking? The vortec ones are notorious for that. Gives you poor performance and bad idle quality and it can effect the oil.

Does the oil smell like fuel or did it ever before?

Fuel contaminated oil would also give you the intermittent "oil can" light you spoke of earlier.

But again back to what someone said earlier to check the fuel pressure is the key to several questions.

08-04-2014, 11:06 AM	#6
speedygonzales Registered User Join Date: Jan 2006 Location: Smithfield, VA Posts: 1,501	Re: 89 S10 4.3 Need help troubleshooting TBI/IAC Idle issue Not being familiar with non-vortec 4.3's I have to ask if the FPR may be leaking? The vortec ones are notorious for that. Gives you poor performance and bad idle quality and it can effect the oil. Does the oil smell like fuel or did it ever before? Fuel contaminated oil would also give you the intermittent "oil can" light you spoke of earlier. But again back to what someone said earlier to check the fuel pressure is the key to several questions. __________________ 99 Z71 (98 body style) Pride and joy