so I need to replace my fan switch, which is the ground type one.

but, I am looking at these jet fan switches that are the same part # for my car and they both have different pigtails attached, and they have different temp settings.
(in summit) JET-60600 | $38.95 | 200-185
(on jets site) 60600 | $50.95 |195-185

 

Probably a case where Summit has the wrong pic/stats for the that part number.

 

Save yourself some money and replace the stock with AC Delco D1855B (or equivalent) fan switch. 215°F turn on temp. Autozone has their brand (p/n sw505, I think) for $10.

Summit's website says 195°on/185° off, same at JET's site. As far as I can remember, the harness picture on JET's site it not what comes with the switch. Though, that was many moons back when I had my '84 lg4 p.o.s. beater I put an elec. fan into.

 

so are you saying the switch doesn't come with a harness at all?
if so, then why does appear to not take the same connection as my stock one?

 

You could also give Hypertech a look at! Part#4026(176*On/166*Off), #4028(200*On/185*Off) They came with a wire harness which I did not need to use. The New fan switch plug on to my old wire harness.....Easy and Simple!

Its up to you now!?!?.......Good Luck!

 

hm, I didn't know about #4028. is that the one you got? does it have that ground peg sticking out? or does it actually look like this: http://www.summitracing.com/parts/HYP-4028/

 

BINGO!!!! But I have #4026. And as you can see it comes with a harness which I did NOT need to use. I just put the switch in place and pluged it in using the old/org harness!

 

What Summit is showing is exactly how it is and looks like!!!!

 

I have my Hypertech Installation sheet here with me and says its(fan switch) is for "1987-1992 Camaro/Firebird 305-350 TPI w/dual fans".......Hope this helps you?!?!

Oh sorry just noticed, you got TBI........
"1988-1992 Camaro/Firebird 305 EFI/TBI"

 

yea then that's not going to work.
are all these switches just for tpi?

 

Nope, look again......."1988-1992 Cam/Fire 305 EFI/TBI"

 

i know, but you're telling me it looks exactly like the one on the summit page. mine is not like that.

 

Which might be why it comes with that harness. The same harness that I didn't use, might be used on yours..........?

 

Try going to HYPERTECH's web page......there maybe different versions of them!

 

nope just the part numbers you gave me.
that's got to be it then. is that a shrink solder?

 

now this is really confusing.
http://2010camaroperformanceparts.com/inc/sdetail/3660
mine is just a wire with a little metal connector! and it actually goes to a sensor!

 

That link you sent from Summit, has "applications" on there, I just went through it for YOUR car 92 RS 305 TBI. They(summit) has them for your car!

BUT PLEASE double check for your self!!!!!!

 

ok, is there some link in the middle of the side of the engine? I can't see because my header primaries are in the way. if there is, I completely understand now!

 

That is MY connector(your pic), the harness sent with the hypertech switch might be an addapter for your engine!

 

What do you mean by link? I'm willing too bet that extra harness is an adapter for your engine!!!!! Oh fan switch is found by pass side Head by cyl 6 & 8(back half of engine).

 

yea I was asking about a link that it connects too in that spot. i just went out and jacked it up to look underneath and my headers are still in my way. I'll just go ahead and order the hypertech then.

 

Actually, I said it doesn't come with what is pictured on JET's website. Manufactures are just as prone to using a generic part picture as an aftermarket suppler.

Even with all the debate, for the basically stock 305 you have (unless your side data isn't right), there is no need to spend the $ on a JET switch and just get a lower temp OEM (type) switch. Which, will just plug right in to you factory harness,
If you feel the need to pay for a name, buy any of them (JET, Hypertech) for a TBI/TPI, they are all the same.
How it plugs in is fairly irrelevant.... it's just a switch to ground to turn on a relay.

 

a 215 is still pretty hot, 305 or not.
how it plugs in matters if it won't even connect to it.

 

It actually isn't.
Obviously GM thought 238° was a fine temperature and mine is currently at 203,xxx miles with no signs of any real issue aside from the factory option SBC smoke at start-up. And for nearly every car on the road since 1982, GM or not, they all run roughly this temperature.

The TBI 305 isn't a performance motor to begin with. A 160° stat and cooler fan switch will do nothing but lower your gas mileage. At best, you might get some SOTP performance but, that's about the same gain as putting on underdrive pulleys. It's mostly a placebo.

Realistically, a warmer motor is less prone to wear if you're looking for longevity anyways.

I can't speak for what came with me JET switch many years back when I bought mine but, even by the Summit picture, you would just clip the old harness plug, strip the wire and crimp on the new weather-pack connector and plug it in. There's no real dilemma to the install be it OEM replacement or aftermarket.

Granted, one persons opinion, ignore it as you please.

 

Opinions aside, you know your car best!!! The best advice here is, RESEARCH! Make sure you know what you want and what you need. Eventhough YOU may agree or disagree with what we(TGO Members) have to say or the info given, read everything you can, and try to then make the best decision for yourself!

Deadbird and I have bumped heads before....Which is a shame!!! But I DO respect his opinions and thoughts, whether or not he believes me.

The reason I put the Hypertech 4026 and a 160* stat is that my seems to be at its best(speed/power) is on the first start up of the day(cool engine). When the engine got up to the 200* is when I noticed the loss of power,(so, lets keep it cool).

There will always be ongoing debates regarding proper engine temps. I've been reconsidering changing my stat from a 160* to a 180* and getting the Hypertech 4028. I still feel that 200*+ is too high of temp, BUT........but maybe 160* is too cold!

(Deadbird).....See, you weren't Ignored after all!

 

well for 1, you got info that wasn't there to begin. I have a 180 tstat going in. number 2, I am pretty sure the reason they ran it really hot was to burn off emissions. anyone will tell you GM ran it too hot. too hot is as bad as too cold.
and you know what, I am getting close to your mileage and my car doesn't smoke whatsoever.
I thought of that too, but wanted to be sure of my selection.

 

So, do you now feel good about getting the part and starting this project? Do you feel confident?

 

Plus, if you've done all your own mods, then this will be a breeze for you.......

 

1) I was giving an example. Read it as that.
2) That would be another reason. ALL manufacturers do this. GM is not a maverick on hot running motors. Just because you or, someone you ask thinks GM made the engine run to hot, doesn't make it fact. I agree, there is a limit to hot though.

I'm sure you probably change you oil more often than 15k miles, worry if you're a quart low and don't run the living s--t out of it from a cold start on a 32° morning. At this mileage and considering it's a TBI, there' no reason to baby it. My '91 is not a prized possession by any means to me. Between the rear end gear noise (it's ran out of gear oil previously) and the clutch chatter (RAM clutches blow) I'm really surprised it's made it this far. It's junkyard bound when it dies anyways.

I'm not trying to be a **** about the subject but, with most newer engines, most everything in them is designed with high temperature in mind. Lubricants are designed with the same reasoning.
I was simply giving my opinion, you're more than welcome to ignore it as I said before.

 

Deadbird- Did you bother reading post #25? And from what I can tell, 92 Camaro has ordered Hypertech #4028(200*On/185*Off), do you still feel that this is too low of temp(running between 200-185)?

 

anything I've never done I am iffy about. but it does look easy if it's just a plug and play.
deadbird, I don't baby it and I would like to get off all of your topics that you have brought up. save it for later. i don't know what maintenance has anything to do with this thread anyway. I posted this thread concerning the switches and their harnesses.

 

I installed the Hypertech fan switch #4028 on at 200 and off at 180 with a 180 thermostat. My car is an 87 LG4 Carb'd engine with headers. Been running great since this summer.

 

and it was just remove old sensor/switch and unlink the harness and replace, right?

 

Correct! It was that easy for me!!!

 

I'm the same way too buddy!

 

I did but, I was to busy blabbering on about other stupid crap instead. THe Fan switch I saw on Summits website using JET-60600, came up as 195/185 but, oh well. 5° isn't a make or break temp. I can't disagree with your opinion though. It really is specific to one's car. I've just found with F.I., there seems to be a much larger windows of power vs temp as opposed to carb. So, I suggested a near stock TPI ECM switched fan temp and save some $$ at the same time. I wasn't aiming to 'ruffle feathers' though, I do from time to time anyways.

I know with my lg4 and a 180° robert shaw thermostat and the JET switch, once the fan was on, it was on always. The engine never made it back down to switch off temp unless it was cooler weather (fall/winter).

It may just be my pile but, the TBI seems very sensitive to changes unless you have the ability to tune it. I have run a 180° Mr Gasket thermo in my '91 and the only benifit I saw from it was the engine seemed run more rich than usual, mpg suffered and it was still slow (and always will be). I started throwing a code as well if cruising a decent stretch. I never cared to check what it was but, I'd assume EGR since it's not hooked up. Back to the 195° stat and the turd seems content. Everyones car is different though.

My '71 with the most PITA to keep tuned Holley (I think that's just in the design of them) loves being cooler but, a carb has a seeming finer window of 'tuned'. With a 355 and 4.88 gears, mpg is out the window so aim for as much wasted fuel economy as possible... lol

I suppose for some head up *** reason, I felt compelled to uselessly reply to your comment.

Oh well, I'm done wasting everyone's time with my ramble... g/l with the switch. Headers make the changing of the switches greatly easier as you should be able to do it topside with minimal coolant loss. I got mine out and plugged the hole with my finger, got the new in position, quick move to get the new one threaded in and done. If you're quick enough, you may only lose a cup or two of coolant.

 

This is what I've been looking for.

 

Deadbird- Since you have read my post(#25), then you should know by now that I mean No Disrespect to you, your thoughts and opinions! Nor have I ignored you!

Yes, we have bumped heads for time to time....lol. But with our disagreements, there has been information posted that otherwise may have not been posted before! It is important that WE understand that we(other members) just want to do what works best for our cars. Like you said, each car is just a little different from eachothers......Take it one case at a time.

Cheers and Happy Holidays!

 

Yup. The only thing that I did wrong at first was to over tighten the switch. Since it is made out of brass, I got over zealous and went beyond tightening.

After another new sensor, a bolt extracting kit, everything went smooth. Expensinve lesson to be learned but at least I know for next time.

 

this is going to be difficult with my headers in the way. can't even see any wire or link inbetween the tubes.

 

I have SLP headers in my car and did the switch replacement fairly easy. Just take your time. You should be ok.

 

When I changed mine, I was under the car, thats the ONLY way I could see or get to it.

If I remember correctly, the sensor is above the starter, between cyl 6 & 8 on pass side. It is sometime mistaken for the coolant temp sensor by cyl 1 & 2, which is seen from up top. Don't get the two mixed up!

 

nope i already replaced that one.
I was thinking differently about this switch. I just got it today and it'll be simple.

 

MY87LT, I need help immediately. i have the old sensor out and for the past hour have been trying to get this new sensor in. i just called hypertech and the guy told me this whole setup is only for dual fans. he also told me the single fan is controlled by the chip. i have been reading differently. and looking at the part on jegs im missing some threading adapter.
does yours have dual fans?

 

The guy at hypertech is wrong unless you got the wrong switch. My camaro is a single fan setup and has the switch right there. I beleive the dual fans have one of the fans turned on by the chip. What is the part number on your switch? I just had to replace mine again and ill see if its the same numbers on the box as mine.

 

4028
did yours come with some thread adapter?

 

That should be the right switch. Same number mine is. have you compared the old one to the new one side by side? Mine didnt come with any thread adaptor thing and it didnt need one.

 

yea they look the same. damn dipstick tube makes it hard too. no matter how hard I try in the cold weather, it wont screw in. and there's no way I can get it from above.

 

It is a total pain. You can move the dipstick tube out of the way. You may haft to unscrew it and you can pull it up some and move it over, thats what I had to do. It may be different on your car I dunno if you have headers or not, but I was able to reach from the top just to get it screwed in. I kinda stood backwards toward the car and reached in with my right hand to get it to go, Turned it by hand a few turns then finished tightening from the bottom.

 

I have headers. the dipstick tube just unscrews?