New Here -- Looking Forward To Learning
Hi everyone, this site is proof that good things can happen when you're searching for a solution to an error code! We've been chasing a Code 21 (TPS) on a 1991 Buick Riv, and unless we have a nasty vacuum leak that we've been unable to find, then our best guess is that the MEMCAL is fried. All the wiring is 100% as to the usual (continuity, volts, amps) and based on those tests, the Buick Service Manual Diagnostics said the ECM should be replaced. We did that. Of course we swapped over the EPROM/MEMCAL. The car runs great but the error code remains and is driving us crazy. :mad1: We're about to install Tuner Pro on a laptop and try that for diagnostics, but does anyone know how to tell if the MEMCAL itself is causing the problem? Thanks!
Need A Little Help In The Heat...
Quote:
Originally Posted by
gregs78cam
It sounds like you have another wire crossed with that TPS signal wire......with TPS unplugged what do get on the signal wire at the connector?
Hey, thanks for the thought. Seriously, that made us paranoid again, so we checked the wires again and ran a continuity test. The TPS Signal wire is solid, no shorts, no cross, and so we're trying to get TunerPro up and running. If somebody could lend some advice on that, we sure would appreciate it.
The engine is a 1991, 3800, Vin Code L, RPO L27 with ECM P/N 16141470.
To make TunerPro work we searched and downloaded XDF "$5B3 91 Buick-Pontiac L27 3800," and for streaming we downloaded "A112.DS," which I guess we have to convert to .ADX using TunerPro.
We're pretty sure that leaves us with only the BIN to find, which we saw listed as "$5B3" but then we're wondering about an unclear reference that suggests using .XDF for BIN?
Confusing if you've never dealt with these before.
So what should we be looking for regarding the BIN and where would we find that, nothing has come from our many searches?
Thanks.
Yup, forgot to check the actual volts at the wire, 101 outside, no kidding. We went running for the AC and I think that will be tonight's low? Lol.