stall problem still continues

[wicked6]

I keep on stalling intermittently when I decelerate. The rpms drop to 500-600 and come back up. But when I turn, the power steering seems to put more strain on the engine and drops it to about 300-400rpm when I decelerate and turn. This rpm bouncing is starting to worry me and piss me off.

Friday or Saturday I will try to spray and clean the throttle body and see if the stalling is due to my IAC gunked up.

My IACs at idle in P drops to 21 and in gear goes to 3x.
My TPS is .46 and 4.8x(WOT).

Also, my car temp as reported by my VDO gauge went to 200 today in city driving in Florida. Is this normal. Also, my DS when I got home read the coolant temp about 10degrees less than my vdo gauge. Is this also normal?

 

[TurboDave]

You're running an Art Carr converter. Has your chip been modified for high stall converters? It's an anti-stall change that needs to be made because the reduced inertia of the high stall converters also allows the engine rpm to drop faster than normal.

Also, your idle TPS at .46 is borderline high. You might want to get it down to .42

 

[wicked6]

What about the erratic code 42 that I sometimes get?

 

[wicked6]

TurboDave,

If that is true what should I change within my chip? My chip is not from a vendor, but from a friend that helped burn the chip using chip burning software. We finalized the current one after 12 or so runs.

Thanx

 

[Tow Man]

If you didn't have the stalling problem before, it's probably in the chip.

I had a stalling problem that drove me nuts for days! The previous owner of the car said it had the stock chip, which turned out to be a Red Armstrong chip!

Changed the chip and no more stalling!

Swap chips and see what happens. Good Luck

 

[gnXfan]

What is your IAC warm IN GEAR (not park). Im betting it exceeds 50.

 

[TurboDave]

Originally posted by gnXfan
What is your IAC warm IN GEAR (not park). Im betting it exceeds 50.

He said in his original post at the top it's in the 30's.

 

[TurboDave]

Originally posted by wicked6
TurboDave,

If that is true what should I change within my chip? My chip is not from a vendor, but from a friend that helped burn the chip using chip burning software. We finalized the current one after 12 or so runs.

Thanx

Have your chip hacker check the data bytes in locations: 68E, 68F, and 69E

Have all three locations changed to 0F

 

[NC87GN]

TurboDave is 100% correct. I went through the same sh*t this weekend trying to keep the car from stalling when letting off the gas. I had two identical GN setups, however one had stock stall and the other was 3500 stall. Made the changes, exactly like Dave mentioned, and that did fixed the low idle problem. Wish I knew this before I burned 10 chips trying to get it right. Thanks for the info dave...

Mike Banas
87GN