ok so i got an interesting problem.... first of all i have a 1999 ford ranger 4.0l v6... i have a custom exhaust its after the cats into a flo pro muffler and has a side exit before the rear wheel with a 4 inch tip... i have replaced all 3 of the o2 sensors.


the problem....
well my cel came on and the codes indicate that my right header o2 sensors heating element is fried. and its running lean on both sides... and when im sitting at idle it jumps around it goes from normal idle and jumps too 1200-1500 for a second then drops down to normal and then jumps again. it doesn't stop doing that... then when i have both dash and floor vents on it seems to idle high when its on heat. anyone have this problem????

any solutions would be very helpful so let me know

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1999 ford ranger 4.0l v6 4wd
-3 inch body lift
-custom ultra type 50 15x8 rims -31x10.5r15 bighorn maxxis MT tires -stock stereo with line output converter and 500 watt jensen amp with a 12" Mtx thunder 4500 sub-custom white neon blue guage overlays-pro-comp explorer stainless fog lights

if you look at this post keep bumping it please i need help on this

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1999 ford ranger 4.0l v6 4wd
-3 inch body lift
-custom ultra type 50 15x8 rims -31x10.5r15 bighorn maxxis MT tires -stock stereo with line output converter and 500 watt jensen amp with a 12" Mtx thunder 4500 sub-custom white neon blue guage overlays-pro-comp explorer stainless fog lights

anyone with sugestions?? anything??

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1999 ford ranger 4.0l v6 4wd
-3 inch body lift
-custom ultra type 50 15x8 rims -31x10.5r15 bighorn maxxis MT tires -stock stereo with line output converter and 500 watt jensen amp with a 12" Mtx thunder 4500 sub-custom white neon blue guage overlays-pro-comp explorer stainless fog lights

You still got the codes? Light still on? You check all the wiring to the O2 sensors? Maybe you pinched one of 'em

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'88 STX Super Cab 4x4
2.9 5spd 180,000 miles
Crappy Paint, Worn Parts,
Fix'em as they Break
when Nowhere is Now Here

all lines are fine none are burnt or pinched. i think the codes were p0171 and 173 im not possitive ill check later...

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1999 ford ranger 4.0l v6 4wd
-3 inch body lift
-custom ultra type 50 15x8 rims -31x10.5r15 bighorn maxxis MT tires -stock stereo with line output converter and 500 watt jensen amp with a 12" Mtx thunder 4500 sub-custom white neon blue guage overlays-pro-comp explorer stainless fog lights