is it a big deal...

99alerogirl · 03-12-2009, 03:19 PM

I got my PCM in today at my parents' house, just have to go pick it up. it's tuned for a 180* t-stat, which I have sitting in the backseat of my car, waiting for a warmer day to install it (cause it will be a job for me). I was wondering if it was a big deal to install the PCM if it's tuned for 180*, but my 195* t-stat is still in (for a short time, will probably be replaced this weekend/week, since now it's spring break

). but yeah, I would appreciate anyone who's into tuning to answer this for me quickly... thanks

jackal2000 · 03-12-2009, 03:28 PM

i know you are excited about your pcm, but you might as well wait until you have the t-stat installed.

Beholder88 · 03-12-2009, 03:37 PM

Just a question, is it because the PCM is now programmed to run the engine @ 180 degrees for optimal performance? I'm just not real knowledgeable about this subject yet.

99alerogirl · 03-12-2009, 04:36 PM

yeah, that's why i asked too haha.

heineck · 03-12-2009, 07:01 PM

whered u get ur pcm?

Valley olds · 03-12-2009, 07:59 PM

I think you need a lower temp t stat, otherwise your engine could experience detonation. Not really sure though, but it does have something to do with the ignition cus the PCM advances your timing.

[ion] C2 · 03-12-2009, 08:42 PM

http://www.j-body.org/forums/read.ph...28725&t=428605

99alerogirl · 03-12-2009, 09:46 PM

ok so I found on grandamgt.com that it was fine to put it in (thanks ion for that link, maybe i won't change the t-stat). soooo i put it in, and bam, my gas gauge doesn't work, and then my trac off light comes on and won't go off. then i drove it like 5 miles and realized my odometer wasn't moving either. i really couldn't tell a difference in performance at all either. i PM'd mark on gagt, and he said to make sure the connections are good, but it could be a faulty pcm. BOO!

[ion] C2 · 03-12-2009, 09:48 PM

HPTuners ftw. Customization capability.

heineck · 03-12-2009, 09:51 PM

Quote:

Originally Posted by 99alerogirl

ok so I found on grandamgt.com that it was fine to put it in (thanks ion for that link, maybe i won't change the t-stat). soooo i put it in, and bam, my gas gauge doesn't work, and then my trac off light comes on and won't go off. then i drove it like 5 miles and realized my odometer wasn't moving either. i really couldn't tell a difference in performance at all either. i PM'd mark on gagt, and he said to make sure the connections are good, but it could be a faulty pcm. BOO!

ahhh thats sucks donkey dink

TheEdgeofSanity · 03-12-2009, 09:56 PM

oh noez your car is gonna explode into 48690572683562359865707 peices!

99alerogirl · 03-12-2009, 10:16 PM

Quote:

Originally Posted by [ion] C2

HPTuners ftw. Customization capability.

come help me!

[ion] C2 · 03-12-2009, 10:19 PM

i have nothing to do this weekend but still that's a 6 hour drive

99alerogirl · 03-12-2009, 10:20 PM

i know, i would drive up there but uhh i don't know when i need gas, and then my odometer would be way off... unless i stuck my stock one back in. do you think when i stick the stock one back in everything will work again?

TheEdgeofSanity · 03-12-2009, 10:33 PM

it should work fine if you put your old one back in. if anything, did you do the relearn process?

99alerogirl · 03-12-2009, 10:34 PM

does anyone happen to know what wire controls the odometer and gas gauge? everything else is working fine. speedo and tach work fine, my gas gauge jumps like, 2 millimeters but still sits under empty (and the gas light doesn't come on). and the odometer reads 117188. the trip read 189.6 before i reset it to 0, now it says 0. i'm thinking (if it's not the pcm issue) i maybe snagged a wire somewhere? there are tons down there, since that's where my security system wiring is too.

99alerogirl · 03-12-2009, 10:35 PM

Quote:

Originally Posted by TheEdgeofSanity

it should work fine if you put your old one back in. if anything, did you do the relearn process?

the security relearn? i thought that was only if your car didn't start afterward, which mine started right up. i haven't had a chance to do the case relearn thing though... my car runs fine for now.

Misuseofyou · 03-12-2009, 10:43 PM

Think he means disconnecting your battery for a while.

rowdygls · 03-12-2009, 10:47 PM

You would need to put your factory PCM back in for ION to do anything for you. Unless the new PCM was created with HP Tuners...then it would be ok but if it was created with the DHP program...it locks it down. I found that out when my car was on the dyno.

I would put the old one back in and see how the car reacts. I may have missed it....but where did you get the PCM from?

99alerogirl · 03-12-2009, 10:49 PM

yeah, mark said the pcm could be bad for some reason. it was really really dirty, and kinda dinged up. but tomorrow i'm gonna take it out, check all the connections, put it back in... and if that doesn't work then i'm gonna put my stock one back in and pray that everything works.