87Chief Posted January 5, 2014 Share Posted January 5, 2014 I got a donor 88 4.0 today and looked under the hood and saw that I was missing quite a bit.. Not stating the obvious air cleaner box, brake master cylinder, etc. But there are some loose wires/connectors under the hood that I have no idea where they go.. Thanks everyone. Link to comment Share on other sites More sharing options...
ftpiercecracker1 Posted January 6, 2014 Share Posted January 6, 2014 From what i can see, the only mystery plug is the first picture or am i missing something? Unfortunately i can't ID that plug, my first thought was the manifold pressure sensor, but it looks like that is already accounted for. Link to comment Share on other sites More sharing options...
87Chief Posted January 6, 2014 Author Share Posted January 6, 2014 Yeah it's right next to the valve cover.. The other question I have is there isn't anything plugged into the connector below the coil plug (closest to firewall) not sure what that does. Next are the plugs/wires in the last picture (mess) they are on the driver's side closest to the headlight (underhood). Thanks for the help Link to comment Share on other sites More sharing options...
Jeep Driver Posted January 6, 2014 Share Posted January 6, 2014 That does not exactly look like an optimal donor for a 2.5 to 4.0 swap. How do you know it even runs? Link to comment Share on other sites More sharing options...
87Chief Posted January 6, 2014 Author Share Posted January 6, 2014 Put a battery in it and some fuel and it started up and idled just fine.. Link to comment Share on other sites More sharing options...
kq.echo.413 Posted January 6, 2014 Share Posted January 6, 2014 Well I must say if it started and idled fine...You my friend are a step ahead in the renix idle issue world..Good luck bro Link to comment Share on other sites More sharing options...
Strokermjcomanche Posted January 6, 2014 Share Posted January 6, 2014 There are only 2 plugs that are supposed to go into the coil(technically the module) . As far as the first pic it looks like someone changed the crank sensor and left the old one bolted to the intake manifold . Link to comment Share on other sites More sharing options...
87Chief Posted January 6, 2014 Author Share Posted January 6, 2014 Thanks, I'm gonna need it Link to comment Share on other sites More sharing options...
87Chief Posted January 7, 2014 Author Share Posted January 7, 2014 Well some good news I think... Pulled the c101 connector and no black tar. Looks like someone has already cleaned it and put do electric grease on there. Also new battery cables and such.. Previous owner did some work... Link to comment Share on other sites More sharing options...
87Chief Posted January 25, 2014 Author Share Posted January 25, 2014 Got some pictures.. I need help identifying some connectors... Right behind driver's headlight area Also behind driver's headlight Driver's fender... These three connectors infront of the brake booster Link to comment Share on other sites More sharing options...
Eagle Posted January 25, 2014 Share Posted January 25, 2014 Top photo I think is the connector to the aux fan sensor in the radiator tank. The relay in the third photo is the relay for the aux fan. I think one of the connectors in the last photo is for the windshield washer pump. Not sure on the other two. Link to comment Share on other sites More sharing options...
johnr Posted January 25, 2014 Share Posted January 25, 2014 bottom photo. I'm pretty sure the brown plug it the washer pump. the single plug in the center, this is one that I have no home for either Link to comment Share on other sites More sharing options...
ftpiercecracker1 Posted January 26, 2014 Share Posted January 26, 2014 Connector for Auxilary fan Big thing on the left is acutally a relay (just now noticed) for fog lights. I do not know what the other one is. Driver's fender... From Left to Right: Auxilary fan relay, EGR stuff, Fuel pump ballast resistor Two little black plugs are indeed for the washer fluid bottle pumps, Cherokees have two pumps, Comanches only one. Big Brown is for washer fluid bottle level sensor. Little plug in the background, on the brake distribution block, brake fluid level/pressure sensor.Thats what its called right? Link to comment Share on other sites More sharing options...
carnuck Posted January 26, 2014 Share Posted January 26, 2014 It doesn't check the fluid level, but it "senses" difference between front and back line pressure by sliding a plunger that gets pressure from both lines. When one is lower pressure, the plunger slides sideways and trips the switch the plug is attached to. Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now