1986 305 tpi transam , comp cam 212 218 449 456 112 lsa , port&polished heads , 1.94 intake valves, headers ,,

i get the car back home from the mechanic , it ran with the 86 hypertech chip , sometimes it would idel really low from going to park to reverse and die with the ses light on ,i tried the bone stock 86 chip in there and it will not idle period , no light ,,

i took the 86 chip and added the maf 1 from the arap bin to it , when i start the car the light comes on and it runs ruff , sounds like some knock as well ,

yesterday i tried to burn a stock 87 305 tpi bin , when i put that in the car it idled at 1300 rpm and wouldn;t come down , also the ses light was on ,

i am in a mess here , i was going to take the hypercrap chip out of there memcal but the bastards soldered it in there ,

please help

 

Goto radio shack. Get a connecttor to stick on the bottom of the memcal so you can put it in your pocket programmer. Then read hte bin.

Do a compare with your other bins. See what is different.

Also, you should find out *what* codes it gets when the SES light comes on.

-- Joe

 

What are you using to edit the .bin?.
Sounds like the checksum is getting messed up somehow.

 

tunerpro , 6ev011.ecu

i took a stock 87 bin and tried it with nothing done to it, ses light on and i rev to 1400 rpm on idle , idle will not go down

the stock 86 bin that i have now will idle and than die ,

 

i was updating the 87 bin with the arap6e.bin

grumpy thanks

 

i got code 33

 

MASS AIR FLOW (MAF) CIRCUIT (HIGH)

Looks like you didn't get the table copied correctly.

Try reading you stock .bin, and try loading that in the ecm, and see if you can establish, a basic read, copy, and write routine.

 

Not to be an ***, but have you eliminated the possibility of a vacuum leak somewhere?

 

the car only runs with the hypertech chip in there, what ever hpertech did to the chip is keeping the car decent ,

thanks for your help