voodoochylde
Member
- Joined
- Mar 31, 2010
- Messages
- 133
- Reaction score
- 1
- Points
- 18
- Location
- Rainelle, WV
- Vehicle Year
- 1986
- Make / Model
- Ford
- Engine Size
- 2.9l
- Transmission
- Automatic
Hello all. It's been a long time since I've posted. I sold my old 86 BII several years ago to a forum member here but I've, in the past year, bought another 86 AND an 89.
My issue is with the 86. Base model, manual everything. TK5 transmission with 3.73 limited slip rear. Running 235/75R15 Treadwright ATGs.
What's it doing? Tremendously bad performance. I can't maintain speed or accelerate on any incline. The guts fall right out of it. It feels like a very, very bad misfire. The more you actuate the throttle, the worse the condition becomes. It will do it on flat roads, too, but I can feather the throttle and very slowly accelerate then. It will also exhibit this problem if I'm trying to delay shifting on flat ground as the vehicle eventually requires more throttle input to accelerate further in the current gear.
The vehicle has exhibited this for a couple of months but it's been very mild. All I had to do was drop a gear and I could climb hills with no issue. Since about two weeks ago, it's almost impossible to justify driving anywhere with it.
I bought her in June and, since then, here's what I've done.
-Dropped the tank, replaced in-tank pump/sender assembly.
-Cleaned the tank with tap water, let it sit overnight with a couple of gallons of vinegar inside, then rinsed thoroughly the next morning.
-Replaced the frame-mounted pump.
-Replaced the fuel filter after the frame pump
-New plugs (Autolite, yes I know, horrible stuff. Will be replacing ASAP)
-New plug wires
-New distributor cap and rotor button
-Set timing to 10 degrees BTDC with SPOUT jumper removed
-New fuel pump relay
-New EEC relay
-New oxygen sensor
-Cleaned IAC
-New TPS
-Swapped ignition coils between the 89 and the 86.
The power steering pump pukes EVERYWHERE. I'm not kidding: if full, it will somehow throw fluid all the way onto the driver's side fender. This, of course, soaked the ignition coil but I did swap them to see if the condition improved. It did not.
I got into it last night with the timing light to double-check base timing. It's at 10 degrees still but I did notice that there is a random loss of spark at idle on cylinder (1). It was cold and I'm a pansy so I didn't take the time to see if this occurred on other cylinders.
Also, of note - a previous owner had completely disconnected the MAP sensor by cutting the harness. I repaired this. The truck ran OK after that, several months ago.
I'm not at the end of my rope but I sure am frustrated. I'm wondering if the TFI could be causing this. I tried swapping it from the 89 to the 86 but that was several months ago while I was chasing the less serious malfunction.
Sorry for the novel. Thanks in advance for the help.
My issue is with the 86. Base model, manual everything. TK5 transmission with 3.73 limited slip rear. Running 235/75R15 Treadwright ATGs.
What's it doing? Tremendously bad performance. I can't maintain speed or accelerate on any incline. The guts fall right out of it. It feels like a very, very bad misfire. The more you actuate the throttle, the worse the condition becomes. It will do it on flat roads, too, but I can feather the throttle and very slowly accelerate then. It will also exhibit this problem if I'm trying to delay shifting on flat ground as the vehicle eventually requires more throttle input to accelerate further in the current gear.
The vehicle has exhibited this for a couple of months but it's been very mild. All I had to do was drop a gear and I could climb hills with no issue. Since about two weeks ago, it's almost impossible to justify driving anywhere with it.
I bought her in June and, since then, here's what I've done.
-Dropped the tank, replaced in-tank pump/sender assembly.
-Cleaned the tank with tap water, let it sit overnight with a couple of gallons of vinegar inside, then rinsed thoroughly the next morning.
-Replaced the frame-mounted pump.
-Replaced the fuel filter after the frame pump
-New plugs (Autolite, yes I know, horrible stuff. Will be replacing ASAP)
-New plug wires
-New distributor cap and rotor button
-Set timing to 10 degrees BTDC with SPOUT jumper removed
-New fuel pump relay
-New EEC relay
-New oxygen sensor
-Cleaned IAC
-New TPS
-Swapped ignition coils between the 89 and the 86.
The power steering pump pukes EVERYWHERE. I'm not kidding: if full, it will somehow throw fluid all the way onto the driver's side fender. This, of course, soaked the ignition coil but I did swap them to see if the condition improved. It did not.
I got into it last night with the timing light to double-check base timing. It's at 10 degrees still but I did notice that there is a random loss of spark at idle on cylinder (1). It was cold and I'm a pansy so I didn't take the time to see if this occurred on other cylinders.
Also, of note - a previous owner had completely disconnected the MAP sensor by cutting the harness. I repaired this. The truck ran OK after that, several months ago.
I'm not at the end of my rope but I sure am frustrated. I'm wondering if the TFI could be causing this. I tried swapping it from the 89 to the 86 but that was several months ago while I was chasing the less serious malfunction.
Sorry for the novel. Thanks in advance for the help.