Why did you break the oil-pressure sending unit? That's at the back
of the engine, behind the intake manifold - did you take the tranny
mount off and drop the tranny's tail end down? That's usually the
only way to break the oil-pressue sending unit (OPSU), because as
the engine tilts to the back, the OPSU bumps against the firewall and
gets borked.

 

Maybe he is thinking of the coolant temp sensor for the cluster gauge.

 

Well, they did say, "take out the oil pressure sensor. i broke mine when
i did headers, as well as coolant temp sensor. "

So, I'm thinking the coolant temp sensor they're talking about is the
one on the driver's side of the engine. (The other one is at the front/
base of the water pump and supplies info to the PCM).

 

I don't know. I ended up breaking the coolant temp one as well, I tried to cut a corner and lost. Didn't have any run-ins with the oil pressure sensor.

 

You can get a set of header bolts from autozone for about $10 that come with wires with springs over them that you slide through little holes in the head of the bolts and it keeps the bolt from rattling out.

I highly recommend this because if your header comes loose and you blow out the gasket then you have to buy new gaskets and do more work.

 

if your tight on cash I would wait to install them, it took me a week to install my headers plus hundreds more beyond my original budget, due to eveything that could go wrong going wrong, bolts breaking, stuff not fitting, parts breaking etc.