'86 TC Running Lean July 05, 2008, 04:10:24 PM The TC has been running lean at WOT. It seems normal at any other throttle position. I have an Air/Fuel guage and at WOT it shows nothing. The car bogs way down. I have a Kirban AFPR but no matter which way or to what extent I adjust it I can't feel, see, or hear a difference. Do I need to go to a 255 lph?I have a K&N, '88 VAM, FMIC, 65mm TB, stock T3, 3" DP, and single 3" exhaust. Quote Selected
'86 TC Running Lean Reply #1 – July 05, 2008, 04:43:08 PM Are you running a wideband air/fuel gauge? What boost are you running? and what is your FP? Quote Selected
'86 TC Running Lean Reply #3 – July 06, 2008, 01:15:08 AM It's the A/F gauge with the red, yellow, and green lights. Red for lean, yellow when above "STOICH" and green for rich. Boost is about 18psi. I don't know what my fuel pressure is. I *think* I'm still on the stock pump. I haven't messed with it and I can't find a receipt for one from the previous owner who kept EVERY receipt. Quote Selected
'86 TC Running Lean Reply #4 – July 06, 2008, 08:17:33 AM Regardless, you will need a 255lph high pressure pump. I don't know if that's your problem, but that's something that's just waiting to fail. Quote Selected
'86 TC Running Lean Reply #5 – July 06, 2008, 10:22:01 AM Yes I would agree you need a 255lph pump, also that is a narrow band A/F gauge...they are useless. It isnt reliable and doesnt tell you anything. I wouldnt run anymore than 16 psi on a stock pump. Plus you will need to make sure you have at least 39psi stock fuel pressure vac off. Quote Selected
'86 TC Running Lean Reply #6 – July 07, 2008, 12:09:34 AM Ok guys, thanks. I'll turn the PSI down and put that 255 on the shopping list. Quote Selected
Topic: '86 TC Running Lean (Read 849 times)
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