overheating just got a new head gasket and water pump put on and still over heats new therma stat and radiator cap and still over heats i even wired the fan to a switch so its always on and it still over heats getting real sick of this piece of **** so please someone help me out here i just ran the battery to the trunk as well so idk what the problem it could it be a bad temp sensor? and would that throw a code all i have now is some emissions controller which is a dealer code so idk whats up just alittle pissed after all the money i spent to fix it

 

Dude, it is NOT a 420A

Replace the tempature sending unit and post your results.
Something is wrong if it's still overheating...


~Nate

 

thats what everyone has ever told me when they seen the motor 420a ill check the temp sensor and see if thats it its a pain in the ***

 

420a's went into eclipses i believe they are the same block but different head they are reversed

 

Yeah Eclipse's and some avenger had the 420A. The neons have the same engine but the head is different.

 

either way the heads are just reversed which would pretty much still make it a 420a? idk i think i fixed the overheating but i have to fixed my lights for the system the lights dim like mad cuz i ran the battery to the trunk i have like 2 full caps lol

 

i dont think your lighting issue comes from the battery in the trunk cause thats where i have mine..and my lights are fine with a 15 L7 running 2000watts through the car..with only 1 cap

and its not a 420a even though the heads are reversed...its either called an ecc or ecb from what i remember one for a DOHC and a SOHC...

 

Never seen the point of moving weight off the front axle... but anyways what size wires did you use? I think you should add a large (0 or 2) ground from the firewall to the block, since you removed the main engine ground when you relocated your battery... Also, if your car is rusty, you might have some pretty poor grounding from the trunk to the engine compartment...

~Nate

 

ok nvm i fixed it the battery in the trunk idea was dumb with my system it was drawing on the alt way to much and when i turned it up the heat gauge went up lol so i put it back where it belongs

 

A 420A does not fit in a neon. The intake manifold is nearest the fire wall, and sits up too high for the hood to close. One could switch to a box manifold for turbo application, but not worth the work for n/a.

As far as the overheating; did you have the head checking for flatness, all head bolts properly torqued, no air bubbles in the coolant?