1986 TPI Corvette intermittent code 33 - TunerPro RT

[rharker]

UPDATE --
Someone pointed out to me that the Hypertech chip that I have is actually based upon an AANL (from the log files) instead of the stock equivalent AANK .... would that cause any issues?

Also the code 33 is no longer intermittent ... it comes ~5 seconds after start every time. The only thing that I notice for drive-ability is that when letting off the gas almost every time there is a slight hesitation or stumble. The displayed MPG is comparable to when it was running no codes at 16 in the city ~24 on the highway.

[rharker]

The codes degraded to 33 and now 34 so I installed a new MAF which did not help although it went back to only code 33. Somebody suggested that I upgrade my ECU to an 87-89 memcal so that my computer will communicate at 8192 baud instead of the agonizingly slow 160 baud I have now. So I'm looking for a 87 vette Memcal ($32B) for and automatic with 3.07 gears. Would someone be able to burn one for me?

[dave w]

The codes degraded to 33 and now 34 so I installed a new MAF which did not help although it went back to only code 33. Somebody suggested that I upgrade my ECU to an 87-89 memcal so that my computer will communicate at 8192 baud instead of the agonizingly slow 160 baud I have now. So I'm looking for a 87 vette Memcal ($32B) for and automatic with 3.07 gears. Would someone be able to burn one for me?

I can help you with an 87 Vette Memcal. Please send me a Private Message (PM) for details.

dave w

[METALMAN1972]

if theres a MAP code on a MAF car i would say wrong computer? or prom

[rharker]

if theres a MAP code on a MAF car i would say wrong computer? or prom

I forgot about this forum and I failed to follow up ... my bad. The MAF codes were cleared by installing new MAF relays (burnoff & power) my 3rd set. I have the blank Memcal that I intend to get burned so that it has the faster baud rate other than the 160 I have now.

Thanks,
Robert

[billygraves]

Move to the last Y-Car calibration. 1989 Y-car automatic trans. Disconnect the Cold Start injector.

[rharker]

Move to the last Y-Car calibration. 1989 Y-car automatic trans. Disconnect the Cold Start injector.

Thanks Billy this will help out a lot!