Diagnostics

[twistedmooch]

i was wondering if someone had a chart of what all the sensors should be reading when u activate the diagnostic and flip through all the different sensors and such. i guess if the numbers were off it would show an error but i was just curious, due to my reatta not running very well.

[Guest]

Twisted, you are asking intelligent questions about your Reatta, but why not purchase a Buick Reatta Service Manual? Easy to find and the manual will answer 10,000 questions. <img src="http://www.aaca.org/ubbthreads/images/graemlins/ooo.gif" alt="" /> <img src="http://www.aaca.org/ubbthreads/images/graemlins/ooo.gif" alt="" />

[twistedmooch]

i actually do have a service manual, but i only found out today i can do diagnostic through my computer. i checked them all and i had a few i wasnt sure on so i mind as well post them to see what i can get.

ED01 TPS (Throttle Position Sensor) .4 at idle (4.24 when car is off and pedal is to the metal**)

ED06 - MS INJ PW (Injector Pulse Width) it says it should be from 0-1002mS mine was between 4.6-5.0

ED08 - DEG SPARK ( Spark Advance ) it was at 20 degrees while idling and 70 when the car was off and had the key turned (it says anwhere from 0-70)

ED11 - RPM (Engine RPM) it was idling at 730-760 though the car shakes quite bad it seems that its misfiring but im not sure

ED16 - ESC (Knock Retard) it was at 0 idling and off

ED17 - OPA3 (Knock Signal) 246 while idling and 0 when car was off

ED18 - CROSS CTS (O2 Cross Counts) 3-14 when idle

ED21 - AIR FLOW was at 5.5 at idle

ED22 - IAC (IDLE AIR CONTROL) 34 in idle , 150 when car is off

The weirdest one was ED98 - IGN CYCLES ( Ignition Cycle Counter) it was at 51 even though it says it resets at 50, maybe i just dont understand?

i dont know if any of this helps lol but i tried, im debating of whether i should bring it in now and get this problem fixed or wait till after winter (i live in michigan) and try and fix it.

[2seater]

Twisted, your numbers look good. When you get good at it, you can enter and leave diagnostics while driving, then you can see what's going on as you drive. The knock counts aren't a problem, unless they keep increasing as you drive. It is a totalizer of the knock it has detected over time and quite a bit can occur at startup, so don't be surprised if this number changes. If you watch the counts while driving, you may see a few counts at full throttle shift points, but otherwise it should remain stable in normal driving. It's also normal for the IAC to read higher with the engine off, as the IAC retracts to supply more air at start up and high idle. As soon as it starts it will gradually decrease to the normal idle setting. The IAC counts are a little higher than mine but every car is a little different and it seems to be keeping the idle where it belongs. Enjoy the experience <img src="http://www.aaca.org/ubbthreads/images/graemlins/grin.gif" alt="" />