fan crapping out

[Blackened302]

^^^that would be awesome, man! i appreciate the offer--if you wouldn't mind, please check it out and lemme know. just in case you don't have it, the part# to the ccrm is F48F-12B577-AA.

i think what i'll do is wire the fans up manually as a temporary solution until you get back to me with the price. my only concern with this is that i noticed that while the high-speed fan isn't coming on, the low speed will stay on instead of shutting off and letting the high come on. if i wire them manually using ccrm pin tapping method, i'm not sure that the low will shut off when i shut the switch off and switch to the high. i'll give it a shot anyway, i'm practically half-way to wiring up the switches.


ultimately, though, i would really like to rewire the whole thing with independent relays and fab up a little shield for them in order to have some protection from the weather, etc.

 

[blksn955.o]

No problem I will stop by after work sometime this week as its on the way home...as far as I go everything is on the way . I cant gare-on-tee anything but will see whats up. No problem on it as if I can get a good price for a stanger on such a rip off $$$ item.

 

[Blackened302]

sweet deal, man--i appreciate you trying, even if it doesn't come through.


still contemplating whether or not to wire them manually..

 

[blksn955.o]

If you do end up making a replacement relay setup I bet there would be ALOT of intrest. If not for the hide the wires crowd alone, bit it would make a replacement relay 10x's cheaper as it would be ind. relays.

 

[HISSIN50]

The issue with stand-alone relays (and why I didnt get all excited about it) is that they are prone to failure. The CCRM relays actually hold up decently considering the environment they're in. Exempli gratia: I'd hate to see someone's EEC relay take a dump and have them get into an accident. That said, it would be super simple use daisy chained relay sockets to redo the 5 relays.

Paul, you're having an issue much like mine at this point. My low speed would not step-aside and let high speed take over (with AC on). If you do Chris's method, steer clear of his 3 pole switch idea (I replied to his thread about why that was not a hot idea - not without an additional relay anyhow).

The issue you might have (and you know it already) is that you cant kick on high speed if low is on. You can be proactive with turning on high speed before 208*F and low wont come on. But when the AC is turned on, your low speed seems to come on by default. This is where the fan connector jumpers can seem appealing again (note that I would not leave the car like that - it was an idea to get you by till parts arrive or a solution is found. I'm not sure how the low speed circuit [wiring] will take high speed draw).

One more thought: are you sure your ECT circuit is ok? When there's an ECT issue, the low speed fan comes on non-stop [with the key on] as a system safeguard. That's probably not the case for you but it was worth tossing out in case it happens.

You very well might get pissed and just do the two stand-alone relays. It's simple and not immediately catastrophic if the relay fails. If you go that route and need help, post up. It should take about 20 mins to do.

Good luck bud.

 

[HISSIN50]

Also with the A/C part of the CCRM (not to steal the thread) but if the A/C has been removed should one do something with the wires of the A/C? Since it does deal with WOT wires and eec fucntion?

From a function standpoint, you can leave the WOT relay and compressor coil wiring in place. The AC is not getting enegized so that whole circuit is dead (since the LPCS never closes). From a tuning aspect, I couldn't answer. If you cannot turn on your AC anymore, the puter's AC accomodations should be moot, no?

 

[Blackened302]

well, looks like i'm gonna try your fan terminal jumper idea, JT, just to get teh car to my buddy's shop.


lemme just get this aboely straight:
1. disconnect fan harness
2. jump high-speed and low-speed
3. ground the ground wire
4. leave fan harness disconnected

correct? if so, for #3--do i ground to chassis or negative battery terminal? will the high-speed come on w/ the key this way?

 

[HISSIN50]

well, looks like i'm gonna try your fan terminal jumper idea, JT, just to get teh car to my buddy's shop.


lemme just get this aboely straight:
1. disconnect fan harness
2. jump high-speed and low-speed
3. ground the ground wire
4. leave fan harness disconnected

correct? if so, for #3--do i ground to chassis or negative battery terminal? will the high-speed come on w/ the key this way?

You got it. Just be sure that you're jumping the low speed wire (middle wire in the harness) to the high-speed fan-terminal on the fan motor itself.

When you do this, any time your low speed fan was coming on before - well now it will be high instead. That's all you've done.

For the ground, if it's easier just run a jumper straight across from the ground wire in the fan harness to the ground terminal in the fan (like an extension since you cannot plug the fan connector back in anymore). Grounding the wire somewhere else was just an alternative but if jumpers are easier (they are for me), just use a jumper.

It's that simple. I need to learn some sort of paint program because a first grade level picture would have made this SO simple. It's tough to explain and understand when written though.

Good luck bud.

 

[Blackened302]

lol, thanks JT--gonna try it out and report back.

you should be glad i don't have your phone #--i'd be bugging you about this stuff too often! seriously, though, if you need something, lemme know, man--i seriously owe you for saving my ass too many times.

 

[Blackened302]

ok, high-speed switch works (and on key-on only, too!).

gonna go put some gas to make it ot the shop and give it a little test run on the expressway.

 

[OrangeMustangGt]

just to thrown my 2-cents in, for testing you can get the high and low speed fan to run by doing a KOEO test, the computer cycles the 2 fan speeds.

you might just have a bad connection at the fan connector? have you tried cleaning up the terminals and using a bit of dielectric grease?

 

[Blackened302]

i did clean up the connection, Kyle--that's what woke them up initially. unfortunately, it was only the low-speed that awoke.


just got back in. drive the car around, highway and around my neighborhood in low gear (higher rpm) and at first it started to heat up, but after a while it went below the N. the jumper-wire method seems to have worked temporarily--thanks again, JT. hopefully it'll get me to the shop in the morning and all this will be sorted out and i can hit the street in full force.

 

[HISSIN50]

Glad to hear it's workin alright for now. Between the CCRM offer or just doing stand-alone relays, you've got good options.