AMC86Kid

does anybody know what the original connector to the temp sensor on the 2.8 is ? if i can find that connector then maybe i can connect those two wires to my new sensor and get my temp dash gauge to work and Green Mesa XJ you say that on the 86 all the sensors get wired directly to the gauges in the dash ? if that is true then what I'm trying to do is definitely possible

ok so this part looks exactly like the one i have on the engine http://www.rockauto.com/en/moreinfo.php?pk=343860&cc=1251931&jsn=432 is it possible to hook this up to the temp gauge in the dash or do i have to connect it to a ecm because I'm trying to get this whole vehicle to run with no super computer

ok so theres 3 different sensors the one on the bottom (with the two prongs sticking out) according to Carnuck it connects to an electric fan so I'm assuming that it turns the fan on from Medium speed to High speed when the motor gets up to a certain temp because the 94 Firebird setup had an electric fan then theres the one with the rubber hose connected to it not sure what that does and then theres the one to the top right which i believe is the temp sensor because it looks just like this one and has two prongs inside the plastic http://www.autozone.com/engine-management/coolant-temperature-sensor/duralast-coolant-temperature-sensor/558821_0_0?cmpid=PS:3:3:1&s_kwcid=AL!5142!3!193223275652!!!!304985278306!&ef_id=UYMz9AAAADV4frw9:20170912203244:s so how do i connect the coolant temp sensor to the gauge is it as easy as connecting those two prongs to the gauge and thats it or is there more to it ?

ok so i ran it with the thermostat removed and the water cycle threw the radiator no problem now my guess is the radiator fluid is a little dirty and got the thermostat stuck in the closed position i noticed that the top hose is hot and the bottom hose is warm and the fluid was warm so then i put the pressure cap back on now i have to figure out how to hook up the temperature sensor so that i can monitor the temp and install new fans to keep my radiator fluid cool here's a pic of what sensors i see on the motor could anyone please tell me where the temp sensor is and how am i suppose to hook it up on a gauge so i can monitor my engines tempurature

I'm not talking about the price what i can't get past is why spend so much money on fixing up a vehicle but have the paint job look like a 2 year old painted it i mean, all brown everything really ? they could have at least painted the flares black or the front bumper any other color

Not sure where to post this so i put it here, This guy wants fifteen thousand dollars, for that !!!Warning your eyes may not like what they are about to see!!! https://phoenix.craigslist.org/cph/cto/d/jeep-comanche/6294883364.html

ok so the radiator bypass on my motor is built in the water pump some how so i either have a bad thermostat or it could possible be clogged inside will look for these things

ok sounds like we got a plan then i will check on it tomorrow and tell you how it does i sure hope i figure it out cause this motor sounds great when it runs would be a huge bummer to over heat it any ideas on how the built in bypass works is it inside of the pump or is there a hose ?

my pump spins counter clockwise and the one you show in the pic also spins counter clock wise (as long as the crankshaft spins clockwise wich about 90% of vehicles do) there no difference in the way it spins just the way its routed your pic is pretty much proof that mine is turning the right way (even tho its routed a different way) i will check the thermostat then check the water pump to see if the impeller is messed up

there pic might be right but there water pump pully has teth on it and mine is smooth but who knows maybe the guys that rebuilt the engine put on the wrong pulley is there anyway to tell how the water pump should turn if i take it off the motor ? actually it doesn't matter now that i looked at it the way i have it routed or the way its routed in there pic the water pump will still spin in the same direction either way so that pretty much proves that mine is spinning the correct way

the 86 alternator was not a real alternator (its a generator) i had no choice but to use the 94 alternator since its a real one I'm pretty sure the belt is in the right direction because i had the motor running before and it didn't even get close to over heating i remember watching all the radiator fluid disappearing and i had to add more water to see the radiator fluid reach the top also as far as the belt sides go the side with the white font is the smooth side and the side thats just black is the ribbed side the water pump and the tension pully are on the smooth side everything else is on the ribbed side

I'm pretty sure the pump is spinning the correct way because the belt does not fit on in any other way maybe the thermostat is bad is there any way that i can bypass it and the fan that i put on there is just to test it in the garage (i will put other fans on later) how do i test the water pump ? in order to get the 94 (pontiac firebird) set up to work i had to swap the alternator and the ac compressor i have not wired the alternator yet (just using a battery charger to charge my battery for now)

i got the carb working by putting in a bypass pressure valve so the fuel constantly cycles and the carb sounds like it just sucks in gas as it needs it i don't think its the radiator the guy who sold it to me said that he took it to a shop and got it pressure tested also when i squeeze the bottom hose wich i think is the inlet hose i see the air bubbles pushing threw the rad and coming up to the cap the radiator or the fluid inside of it is not hot just the engine is, thats why i think something is blocking the flow because if it was flowing then the fluid would warm up as well i would guess that the temp of the engine gets around 150-175

by they way its a 3.4 liter and my engine sounds great when its running and its not blowing any white smoke out the back tail pipe so i think if i figure whats blocking the water flow problem i should still have a healthy motor

Ok so i finally got my carburetor to keep my engine running at idle speed now my problem is i noticed the engine got very hot to hot to touch it would burn your hand so i quickly turned the engine off (just when i fixed one problem another starts) I'm going to let the engine cool off over night I'm not gonna risk running it hot (when it was running i ran it for about 3 minutes) i noticed that the radiator fluid in the radiator is not flowing threw from top to bottom like its suppose to any suggestions on what i should check I'm not sure wether i should look at the water pump or the thermostat because its a rebuilt engine and everything on it looks good from outside but clearly i am not getting the water to cycle threw like i need it to cool my engine off

ok sounds like a plan i will hook it up with a pressure regulator and have a bypass to go to the tank well see how it goes

so did the 2.8 mechanical fuel pump have a return on it ? and is it possible to have a fuel pressure regulator set up to connect to my carb then have a bypass on it connected to my return line so then i will always have gas pumping to the carb and the excess fuel flowing back to the tank

yes the first line to the left is the gas coming from the tank the middle line is the return to the tank and the last line to the right is the gas tank emissions to the smog canister but I'm trying to figure out how to connect the return line does it connect to the carburetor or to something else thats connected the the fuel line

so you say its should be constantly pumping gas threw and the excess gas should flow down the return lines and into the gas tank then i need to find out how to hook up my return line to the carb because currently it is not hooked up to anything and just plugged with a bolt anyone know where the return should be hooked up at so i can get a constant cycle of gas ?

ok so in that forum they run it from the battery to a safety oil pressure switch then to a relay in which he has a switch to turn the terminals on the relay off and on so i get how its wired but i don't get if the fuel pump will be always running as the engine is running or if he just turns in on and then shuts it off after the engine starts ?

i was able to find a service manual http://c777913.r13.cf2.rackcdn.com/varajet_service_manual.pdf it seems like it just explains how to take it all apart tho also i was wondering how the fuel pump is suppose to be working mine is just pumping gas for a few seconds before i start the engine and thats it it doesn't pump anymore gas as the engine is running is that correct or is it suppose to be wired so that its constantly pumping gas and the extra fuel goes back to the tank on the return line ?

ok i took off the rectangular mesh and is that hole with the piece of metal inside the thing that 86FUBAR was saying to adjust

the carb is now cleaned and i made sure to secure it good so there are no leaks also the gaskets look good to but it still pretty much acts the same how strong should the fuel filter in the carb be cause mine is hard to blow air threw but its not dirty i cleaned it out i also get plenty of gas out the fuel line that connects to the carb (when the fuel pump is running) but it seems like the carb has very little suction power to be able to pull gas out the fuel line when the fuel pump is not running that must explain why it runs when you step on it but not when you let it sit I'm assuming when you step on it the suction of gas is much stronger then when it sits

it depends on how your fan blades are designed the easiest way is to simply spin the fan the opposite direction but i can't do that so i will simply put in an electric fan i checked on another working vehicle and the blades on the fan were curved the opposite way of mine most likely this fan was made to be spun clockwise and not counter clock wise like i need it i will get an electric fan in there for now then i will see if i can forge this one to something that can work that way i can have two fans one in front of the radiator and one behind I'm pretty sure that all the new fans that they sell are plastic and not steal and aluminum like the 2.8 one

ok so if my Cubic inches is around 207 and my max RPM is around 4600 then i need a carb around 225 - 250 CFMs and i am currently taking apart the current carb and cleaning it out then i will put it back on and see how it performs if any better