Need a little help. Car is '85 Thunderbird with 5.0 CFI and auto, stock. I've had it since it was new, been a great car. Has 143,000 miles on her now.
Several years ago put new oxygen sensor on it, also replaced TPS some 10 years ago for some reason. About three years ago the EGR kept getting stopped open with carbon deposits I think related to faulty oxygen sensor, I eventually blocked the EGR altogether as going to have to remove intake and clean it good to alleviate carbon deposits blocking EGR open.
No oil use problems, trans is in great shape, TV cable is OK.
Anyway, been running OK, mileage in mid 20s on the road.
Lately however, mileage has dropped to 19-20 mpg and at light part throttle she seems to shift and the engine surges. Idle is not always steady either. At heavy throttle or wide open she seems OK.
I suspect the TPS.
Was wondering however if any need or point in overhauling throttle body, having injectors cleaned, new oxygen sensor along with it????
Our Regatta Blue '85 T-bird. We purchased it Feb. 1986, it now has 141,000+ miles. 5.0 with AOD and 2.73 rear, I added the TC front bumper cover, A&A Fibreglass brand rear spoiler, 15x7s and P225/60R15s, and Konis early on. It's been a great car, minimal repairs needed but I have gone through some maintenance supplies in that time. Paint is original.
This is our '92 Dark Plum Met. T-bird Sport. 5.0 HO with AOD and 3.08 rear, etc. Just purchased it from original owner a few miles up the road, lady about 52 (or about our age), she babied it. Have a set of 16x7 7 spoke wheels to go on it in spring. Paint is new, but original color. We like it so far.
