Hey guys, I put up a thread recently about my low speed fan not working and I'm taking my car into the dealer tomorrow. I set the fans back to the stock settings of 219 low and 226 high for both the low MPH and high MPH with the Predator. I drove around a little and brought it back home. I noticed that my high speed fan is coming on at 217* and naturally my low speed fan isn't coming on at all. I don't understand why my high-speed fan is coming on at 217*...any ideas???????????
Tell me this. I'm not exactly sure how our fans work. There are two fans. Do they both run on low speed and do they both run on high speed (if they're working correctly)? I read someone say that the low speed fans are run in series and the high speed fans are run in parallel. This above would be consistent with that I think. If this is the case it sounds like it's electrical/physical. Maybe the relays (or wiring if you've ever done anything with it) are screwed up? It goes to turn on the low speed fans and they're being run in parallel. Hows that for totally speculative BS?
Honestly I have no idea what's going on. I've never hacked into the wiring(as in the 25 cent fan mod) and the only thing that ever happened was I'm sure the fans were disconnected when my cam was installed. I looked at the connections and everything looks ok. I guess I'll find out tomorrow after the dealer looks at it.
Sounds good to me...lol. I let ya know what they find out tomorow. As long as its covered by warranty I don't give a crap what's wrong with it!
You got your tune backed up right? just in case they flash it?... or they know not to do that (I can't remember if we covered this before)
I ran into this also (not the problem, just the issue) and read an interesting, although unverified post somewhere. The speed being referred to isn't the fan speed but vehicle speed. We have two fans that run at the same speed and come on at different times...i.e. different temps. Just something I remember reading...not sure if it's true, even partially.
Well, sort of. You're more refering to the Predator settings. The predator allows you to set the Low speed fans, Mid speed fans, and High speed fans. No one knows where the Mid speed fans came from since we don't have any... So there are two main menus for fan settings A/C off and A/C on. Under the A/C off you can set each of the fans mentioned above for low mph and again for high mph. So... With the A/C Off you can set the temp for your fans to come on differently when you're going slow than when you're going fast. Turns out that "low mph" is 8 mph or less. With the A/C On there is no separate setting based on speed. That should make it all perfectly clear... :hypno::drugs::grin:
Yup. After reading this I remember. This is exactly how it was posted. (if you stare at your middle smiley a few minutes you will throw up a little in your mouth)
This is correct...I've read all this from the manual and set my settings for A/C off and on back to what's supposedly is the stock settings. I still haven't backed-up my custom tune. If they flash it it should only be for whatever portion of the PCM they're trying to change...ie it shouldn't affect my spark and fuel settings. On another note though...I'm going to get Josh to retune my car since it seems to be running a tad rich since it got warm out. He tuned it in the middle of winter and my car didn't have the catch can on it either at the time. So I'll probably have 2 tunes...1 for winter time and 1 for summer time.
Umm, ok. If your going to get another tune I guess you can get a copy of the first one too? 'Cause I don't think they flash a "portion" of the PCM. I think they flash the whole thing. It's kind of an all or nothing thing with each physical module? Maybe not. Seems the quick adjust parameters can be changed without an entire flash? Will your car run on the stock tune? If they do flash the PCM you could have a different problem. I'm not sure but I think the Predator will then be "out of sync" with the PCM. It will think it's married to some PCM but it won't recognize the stock tune in yours? I sort of remember some case like that but I think the guy got to that point a different way. I think Diablo had to email him some special CROM or something to get out of it.
Well I had the dealer check out the low-speed fan today and its not the relay and the fan is grounded correctly. The tech hooked-up the starscan, but the only thing he did was go into some test mode that enabled him to turn the fans on without the car running. Their official diagnosis is that the low speed fan motor is BAD. They ordered a new low-speed fan and will install it sometime next week. They didn't flash anything. I just changed my fan settings for the high-speed fan back to 194* and had no problems with the Predator so my custom tune is ok. I'll back it up before they install the new low-speed fan.
You know it's pretty simple to backup both your original backup and your custom tune if you've ever had your predator hooked up to your PC before. You run the DSDownloader and as soon as it detects the predator you get a screen that has "Get tune from predator", pick that and it defaults to get original backup. Do that, save it on the pc. get back to the get tune from predator screen and this time you say "no" to original backup and it will get the last tune written to the car. That should be your custom tune.
