More engine compartment and "what is this"?
 

Ok guys,
here are some more pics. I have been reading my manuals, chiltons and haynes, have not picked up a factory service manual YET...
Anyway, any help in identifying these would be a big help. On the carb pic, that white/off white looking connector (circled in red)...I barely touched that thing and the clip broke, so I zip tied it for now. Have no clue what it is/does...
The others...I have looked on the wiring diagrams, but they did not help me much, one diagram said oil pressure sensor...
One way or the other, I will know what these are and what they do. Hope this post helps others as well. Thx

Drivers side:
http://i114.photobucket.com/albums/n...F0014Small.jpg

Behind carb:
http://i114.photobucket.com/albums/n...012Small-3.jpg

Passenger side:
http://i114.photobucket.com/albums/n...010Small-1.jpg

Carb:
http://i114.photobucket.com/albums/n...007Small-2.jpg

Re: More engine compartment and "what is this"?
 

first pic on is temp sensor , 3rd pic is for oil probly tell u if ur low no clue i just hook it up

Re: More engine compartment and "what is this"?
 

The one in red is the map sensor, Yellow one is the AC idle solenoid to up the idle when the AC is turned on.....

Re: More engine compartment and "what is this"?
 

thx guys, keep it coming! :)

Re: More engine compartment and "what is this"?
 

One of the ones by the exhaust manifold (gray or orange) is going to be your ignition knock sensor.


Purple in the last pic is a temp sensor.

Re: More engine compartment and "what is this"?
 

The third one is the Knock sensor on the right hand side of the motor.

Re: More engine compartment and "what is this"?
 

Been looking online for a "replacement" connector plug for this. I must be searching wrong, but map sensor on all the big auto parts sites come up with one of those black rectangular maps with 2 mounting screws, nothing like the one pictured. Any ideas where I can get a new connector for it, or if I have to buy a new map, that's fine too.

Re: More engine compartment and "what is this"?
 

The red one isn't a MAP sensor. The truck does not have one in '86 (not sure about CA emissions) It controls a two stage accelerator pump or something like that. The temp switch in purple controls it.

Slonaker

Re: More engine compartment and "what is this"?
 

Sorry....That is not the map, That's the pump solenoid. I've only been out of the auto biz for 16 yrs. Try your local junk yards for a plug or try the dealer.

Re: More engine compartment and "what is this"?
 

I don't want to step on anybody's toes here, but... the "thing" circled in red is the mixture control solenoid for the carb... Try researching for a conector using this info.

Hope this helps.

Al

Re: More engine compartment and "what is this"?
 

yes 86 california models have a map sensor. From the looks of your carb you have an e4me (computer controlled carb). Which proboably means your car has ca emissons set up. the pump solenoid controls regulates your trucks engine at idle. Looks like you have a dual air smog tube set up as well.

Re: More engine compartment and "what is this"?
 

THIS is the red one;

http://www.partsamerica.com/ProductD...pe=904&ptset=A

Re: More engine compartment and "what is this"?
 

Maybe that is what the blue one is in the second pic.....

Re: More engine compartment and "what is this"?
 

thx, googling now...

Re: More engine compartment and "what is this"?
 

if it has a small vaccum hole leading into it then it proboably is the map sensor.

Re: More engine compartment and "what is this"?
 

it's not a CA equipped truck it was bought new in georgia...
but thx, you guys are "learnin'" me tonight. :)

Re: More engine compartment and "what is this"?
 

you do have a computer controlled carb though. A few states have same set up as california cars as far as smog goes. Just the tests are not as harsh as cali. I dont know if georgia is one of them. you just have one smog air tube on each side? It looks like it.

Re: More engine compartment and "what is this"?
 

hmmm. I need to look into this.
Where would the carb ecm be mounted?

Re: More engine compartment and "what is this"?
 

its usually mounted on the firewall...Look under your steering will in the cab...see if you have a aldl hook up. looks like a plug ..lots of lil prong holes

Re: More engine compartment and "what is this"?
 

Sorry, I got lost in the confussion.:crazy: :lol: Your right.

Al

Re: More engine compartment and "what is this"?
 

any of you running thorley headers?

Re: More engine compartment and "what is this"?
 

As for the red circle in the last photo:
I know that connecter looks just like the connector for the mixture control solenoid, on the computer controlled carburetors but, on a 1986 full size pickup they had a solenoid control dual capacity accelerator pump and that is what that connector is for. Notice there is no connector on the front of the carb for the TPS for a computer controlled carb. Also notice no idle air bleed screw or place for it.


I agree with Slonaker no sensor Map on 86 full size pickup. Also right about it having a
dual capacity accelerator pump and the temp switch for it.

piecesparts & Mickey_D, Yes - Applause for you both

First picture gray circle, I agree with Srubydo1986 , is the temp sender for the dash.

Re: More engine compartment and "what is this"?
 

[QUOTE=shrtbx;2045428]you do have a computer controlled carb though. QUOTE]

It is not a computer controlled carb. The electrical connector is for a dual capacity accelerator pump. It is just an '85-'86 thing on trucks. The carb model is an M4MED. You can read about it here:

http://www.73-87.com/7387garage/drivetrain/myqjet.htm

Try googling for M4MED and see what folks have to say about it.

Slonaker

EDIT: Thanks ChevyTech. You type faster than I do. :)

Re: More engine compartment and "what is this"?
 

are you saying for all 86 full size trucks there are no map sensors. My 86 silverado has one. Its a ca car. california pollution controlled carbs came with the e4me.

Re: More engine compartment and "what is this"?
 

[QUOTE=Slonaker;2045582] I am surprised you knew about it. I though everyone would be arguing with me about it.