1986 F150 question
Thread Starter
|
New User
Joined: Mar 2006
Posts: 3
Likes: 0
1986 F150 question
I am helping a friend of mine look at an 86 f150. It’s a 302, 2 wheel drive, extended cab, automatic. I looks and runs well. The guy selling it is a mechanic and fixes up trucks and resells them on the side.
I have two questions regarding the truck:
<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com
fficeffice" /><o
></o>
Any comments or suggestions?
I have two questions regarding the truck:
- The pulley/device on the front passenger-side of the engine, above the alternator, what is it? Some one said it was a “smoke pump”? The belt was not hooked up, and the truck ran fine. Should it be hooked up? Is there a reason why someone would have disabled it?
- There are two electrical sensors that look identical that fit into the intake manifold, between the inner two injectors. Each one has a white connectors(2 wires each), and the sensor itself is a gray cylinder, similar in size to the injectors. What are these? One of them is broken in half. The half that is connected to the manifold appears to be keeping a seal and the truck appears to run fine with the sensor broken. Do I need this? Is it hard to replace?
<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com
fficeffice" /><o></o>Any comments or suggestions?
Freshman User
Joined: Mar 2006
Posts: 29
Likes: 0
The 'smoke' pump is also reffered to as a smog pump. it is part of your emissions system. Many Many people disable it. Usually they seize and cost way to much to replace, so just remove the belt like u said it runs fine.
Not sure what the sensors are they could be temp sensors. They are fairly easy to replace if they are accessable. The problem comes in getting them loose and finding suitable replacements.
you seem to have looked it over pretty good. One thing I check is the rear brakes and rear axel seals. It's been my experience that the rear axel seals tend to leak after 100k miles. If the brakes r spongy pop the master cylinder and see how high the fluid level is.
Not sure what the sensors are they could be temp sensors. They are fairly easy to replace if they are accessable. The problem comes in getting them loose and finding suitable replacements.
you seem to have looked it over pretty good. One thing I check is the rear brakes and rear axel seals. It's been my experience that the rear axel seals tend to leak after 100k miles. If the brakes r spongy pop the master cylinder and see how high the fluid level is.
Freshman User
Joined: Nov 2005
Posts: 32
Likes: 0
sensors
There are 2 sensors on the side by the air filter. Take the air filter assembly off (2 bolts) to get to them easier. One is the knock sensor and the other is your engine temp sensor for the computer not your temperature gauge.If these are the ones you mean.
griff777
griff777
Thread Starter
|
New User
Joined: Mar 2006
Posts: 3
Likes: 0
Kerrmit, Thanks for the info on the smog pump. Sounds like we will just disable it. I will take a closer look at the rear axle/brakes. What goes wrong with the rear brakes?..do the cylinders leak, thus causing the mushy brakes and lose of fluid? Or do they fail to release and over-heat, causing the axle seals to fail and then the cylinders?
Griff, sounds like those are the sensors. You can just barley get your fingers on them with the air filter/housing still on. Replacement would definitely require removing it. The one closer to the rear is the one that is broken off. They appear to be going into the intake manifold, right in-between the injectors. Would it make sense that the truck would run without it either one of these?
Randy
Griff, sounds like those are the sensors. You can just barley get your fingers on them with the air filter/housing still on. Replacement would definitely require removing it. The one closer to the rear is the one that is broken off. They appear to be going into the intake manifold, right in-between the injectors. Would it make sense that the truck would run without it either one of these?
Randy
Last edited by RR_Ford; Mar 16, 2006 at 12:21 AM.
Freshman User
Joined: Nov 2005
Posts: 32
Likes: 0
Yes it can run with a lot of things not working but not like it should. You could be running in the computers open mode. Have you done a code check to see what you have in memory. The computer usually detects anything electrical not working or at an incorrect voltage.
griff777
griff777
Freshman User
Joined: Mar 2006
Posts: 29
Likes: 0
the brakes never failed me they just weree mushy as the fluid was leaking out. I was to lazy to pull the axels and replace the seals it was eazier to take the drums off when i rotated tires to clean the back plate. the dust usually mixes with the fliuds and keeps them away from the shoes
