how do you check this type of fuse? I thought it was a plastic cover over a glass cylinder type fuse but I don't see how it opens.

 

It doesn't open. You either have continuity from one end to the other or you don't. If not it's no good

 

Hi guys!
There is a problem with my 91 Trans AM, about several months can't resolve it.
So I have TPI on my 305ci LB9 engine with two fans, but 2nd doesn't starts.
When temperature rize up to 240F/115C, only 1-st fan (black/red wire) starting.
Also it's starts when I connect with paper clip A+B ports at diagnostic can.
2nd fan I can start only when I connect pigtail connector to ground or shortcut relay (black/pink wire).
all parts are new, caps, sender, sensor, switch, thermostat, rediator, waterpump and hoses.

what did I miss?

gauge STANDARD MOTOR PRODUCTS TS76
switch ACDELCO D1852B
sensor STANDARD MOTOR PRODUCTS TX3
thermo STANT 13356

 

I have a 1985 camaro z28 and I cannot find my cooling fan switch on the passengers side I don't even see the wire I did find one sensor on the drivers side maybe the one on the passenger side broke and the wire broke off where does the wire connect to

 

when you are under the car find the dip stick on the passenger side. the temp sensor os up and to the rear of where the dip stick mounts. should have a plug with a single wire on it.

 

I've heard 85-86 was weird and didn't have one. Is there a plug between #6 and #8 cylinders?

 

There's no plug between #6 and #8 just one between #1 and #3

 

There's no wire there I look just one on the drivers side between 1 and 3

 

No. Same as any other SBC.

No. There's a plug there. Your 2 heads are IDENTICAL IN EVERY WAY. Imagine taking them and setting then side by side, off the engine. Line em up so that you're looking at the exh port side of each. There will be a hole between the left-most spark plug hole and the next one. On the head you then put on the driver's side, it will be between the #1 & #3 spark plugs. The same hole in the other head will be between the #6 & #8 spark plug holes. One side has had the temp gauge (or idiot light) sending unit in it, since 1955; the other has always had a pipe plug, until around 83, when electric fans were introduced.

No. Don't argue, LOOK, and believe. Because it's TRUE.

That however IS potentially true. Not all cars had electric fans; from 1955 until 83 or so, NONE did. Even after that, it was MANY years before ALL did. A car without electric fan won't have the wire, and won't have the switch it would plug into (although the place in the head that the switch would go, has been in EVERY head since 1955). Specifically, LG4 (base model V8) F-body cars didn't have electric fan provisions, because their fans weren't electric to begin with.

Why are you arguing this thing? What are you trying to do? If you'll stop arguing stuff that isn't true, and ASK NICELY what goes where or what to do or whatever, maybe we can help.

 

Maybe its covered in crud and can;t be seen? I think its an inverted hex plug or something..... Some engines are ridiculously dirty and caked in crud....spray the area with brake cleaner or take a towel and wipe the area. Youd see a fan switch if you had one though.... if it fell lout, your coolant would pour out and your motor would be toast!

I recall hearing 85 - 86 used a ecm fan control and no fan switch for electric fans...so youd have no fan switch....but like Sofa said there are holes / plugs there regardless.