jameos95ta

Hello all

My car just started shifting very harsh from 1-2 gears, it will shift so hard it will chirp the tires. I can just ease into it from a stop and it will bark the tires. The car is completly stock except for a K&N filter. The car has 116,000 on it and I've had it for 2 1/2 years with no issues. 1 thing though is the rear end sounds like a damn wolf on a full moon night. Any suggestions??

Thanks guys

98 t/a a4

Red99C5

Check your codes for a P1870.

performabuilt

iTrader: (25)

Im with him sounds like high line from 1870 code

ChocoTaco369

Clean your MAF!

Sometimes, the oil from the K&N filter can get on your MAF and will actually cause a big spike in line pressure. Go to Advance or Autozone or something and buy a bottle of MAF cleaner, it's only like $7. Even if this doesn't fix the problem, it doesn't hurt to clean your MAF.

86 IROC

iTrader: (14)

What's the cure? My girlfriend's car started doing this after a long highway trip Thursday night. (see sig) Has driven fine since, but still throwing an SES light. The fluid looks good, and the transmission doen't feel like it slips. After I pulled the code, I went out and beat the crap out of the car... didn't show any signs of weakness.

jameos95ta - sorry for the thread highjack... hopefully we can both get some good from your thread.

transam45

iTrader: (2)

your maf probably going bad or is dirty the transmission runs of the maf so if it goes bad it will effect the how your trans operates

performabuilt

iTrader: (25)

Well there are several possibilites. The PWM solenoid screen could be restricted. The converter regulator valve bore could be badly worn.The converter clutch itself or the seal or the input shaft could have become hardand is leaking, The pump stator or bushings could be worn out.

With that number of miles any or all the abov is possible and likley. I would try replacing the PWM solenoid first and see whats in the pan , Fluid condition,debris,etc.
And you are likley close to needing a rebuild or replacement unit. Let me know if we can be of any help.

jameos95ta

Thanks guys!

My K&N filter is filthy and my car makes a strange whistling/mechanical noise from under the car like an alternator spinning

I may add that it happens *only* after its been driven for a while, 10 miles more or less.

2000slphawk

i have a 2000 firehawk that has a ported maf could that be why it shifts like it was kicked in the rear?

performabuilt

iTrader: (25)

if its filthy then that would bea place to look first clean it and the MAF then see how it does.I have seen a dirty MAF kill a trans people dont realize how all this stuff interacts at times.

performabuilt

iTrader: (25)

Its possible a MAF change or miss calibration can cause the PCM to miss estimate load and raise the line very high , I have seen this cause damage to the trans and On the dirty MAF GM had a TSB on it.

jameos95ta

thanx! whenever i need to replace or buy something trans related i'll keep you guys in mind!

1QUIKWS6

iTrader: (61)

Damn! I paid $2000 for a tranny that would shift hard and chirp the tires - had I only known all I had to do is throw dirt in my MAF...

2000slphawk

thanks i keep the tb and maf clean before every race "atleast once a week" im going to try a 85mm slp and see if it changes.

TAwhore

sorry for hi-jacking but my tranny is doing the same thing even though i just cleaned the maf, and it shifts hard sometimes, maybe i need to change my fluid?

it's been a year

ChocoTaco369

Buy a stock, unported MAF. Aftermarket MAF's are nothing but trouble, and the SLP is the worst of them all. Unless you're tuned for an aftermarket MAF, they'll only cause problems, and tuning for an SLP is the hardest.

Put on a stock, unported MAF. It's easily good for 500 hp and it will perform better than any other MAF on a stock tune.