This is driving me crazy!!!!!

[WHITE94COBRA]

when I am getting on the gas, when I change to second and hit the gas it seems to hesitate then come alive about a 1/2 second later??? It used to spin second gear no prob, now i can barely get a scratch from it??? I havent lost any power according to my dyno results, But rather picked up a few ponies?? I still have stock gearing, but like I said had no problem hittin second hard??? same with third?? I'm really confused, The only things I have done recently was new clutch about 4 months ago, new maf, and powerpipe. Havent redone the tune since the maf and powerpipe but then again I shouldnt have too since the car already had a 80mm pro m caled for my cold air setup; only difference between the two maf's was one was on the inside of the engine compartment, and the new one is in the fender. Help please!!!!!

 

[mackey]

Try disconnecting the battery overnight then see if it changes anything.

 

[SQUEEZE&STROKE]

To Me It Could Be One Of Two Things...the Gay Computer That Is In Our Cars Which Removes Timing When You ShiFt Gears, Or The Clutch Disc Is Contaminated...did U Get Any Sort Of Oil On It...is It Made To Handle The Power You Are Making...did U Replace The Rear Main Seal When You Did The Clutch?

 

[ShiftTheDrift]

I agree..

It almost sounds like something might have happened to the shift retard for that particular gear. As already mentioned, you might try resetting the ECC. That is unless you have an aftermarket chip and did away with shift retards all together?

Just my .02.

 

[WHITE94COBRA]

Custom tuned from powertrain dynamics, no contamination on the clutch, I'm thinking the chip is too old and some how went south on me?? I tried pulling the chip and there is absoultely no change in the caracteristics of the car, so i'm almost 100% sure the chip is bad, now the next question comes into play; Why the hell did the chip malfunction?? Steve at powertrain said he's never seen it before, so he offered a new chip at half the cost, with dyno tune. So I'll be putting the new cam in before hand.

But seriously how bad is the tip in retard on a stock comp??? This really sucks, puttin down tons of power and cant even squeal 2nd or 3rd. I'm embarassed. So I think its time for gears as well! My goal at first was to be able to spin through 3rd with stock gearing (308). then do gears, and axls.

 

[final5-0]

It is true, our cars do have a tip in retard but that very same thing has been in effect all of this time so IMHO, that is not what has changed.

More than likely, its your fuel ratio that has changed due to your mods of the pipe and maf.

Usually a pipe or cai will lean things a bit.

The maf is a crap shot about if you go fatter or leaner but I'd bet your ratio has changed none the less. JFYI, I've seen peeps have to lean the lower part of a curve by as much as 20% to make things look like they should.

I'd reset the pcm and give it a few days to see if its adaptive can help any.

After that, if the prob still ramains you might try to raise or lower the fuel pressure.

Later
Grady

 

[WHITE94COBRA]

Ok I have the battery disconnected, and I will leave it over night. I had the chip out all day and the car drives exactly the same with or without it. I'll try and get the tune and new chip in the morning, i'll write up on it as soon as I can. this is still driving me crazy.

 

[final5-0]

Ok I have the battery disconnected, and I will leave it over night. I had the chip out all day and the car drives exactly the same with or without it. I'll try and get the tune and new chip in the morning, i'll write up on it as soon as I can. this is still driving me crazy.

If you wanna reset the pcm a little quicker ............

disco the neg batt cable for about 20 minutes, or .........

disco the neg batt cable and step on the brakes for about 5 seconds

Later
Grady

 

[WHITE94COBRA]

I'm just gonna leave it off over night, my GF is complaining that i'm spending too much quality time with the cars!!!!!

Also what exactly is the tip in retard on a cobra, IE how much timing does it pull???

 

[final5-0]

I'm just gonna leave it off over night, my GF is complaining that i'm spending too much quality time with the cars!!!!!

I dated a girl who used to tell me things like that.

I dated a different girl who used to hang with me in the garage and hand me tools when I was under the car.

Guess which one I married???

Also what exactly is the tip in retard on a cobra, IE how much timing does it pull???

When you are at say no more than 1/4 throttle and say at a cruise and you then go wot or as Ford says it, you "tip in" the throttle, the pcm will retard your spark to 5 degrees for about 1/3 of a second.

Later
Grady

 

[WHITE94COBRA]

Ok well I reconnected power this morning, no better than before. I called Steve at powertrain and asked him about the tip in retard, he said he had programmed it so the computer would never go under 15* timing at any point! So it deffinately is the chip!!! took the chip to him this morning and sure enough for some reason the chip is not functioning correctly. It is about 5 years old, but we couldnt find anything physically wrong with it. We plugged the comp. in just to make sure it wasnt the stock comp. It works just fine, so I'll have a new chip and tune on friday (hopefully). What a pain in the arse. Damn computers.

 

[ShiftTheDrift]

Well, at least we know what's going on! It must be nice having your chip guy right down the street.

 

[WHITE94COBRA]

Its great and he's a cool guy to boot. I have sat and watched him build engines and do dyno tunes for hours on end, he's more than happy to talk and show you what he's doing and how to do it.

 

[mytight95]

tell me about it, i have around a 8 day turn-around it seems with JMS>


jason

 

[ShiftTheDrift]

you and me both.