2004 Grand Prix PO300
3.8 non supercharged. Just had upper and lower intake manifold gaskets done, new spark plugs and wires. Tested on Autel OBDII/ EOBD-
fUEL SYSTEM 1 cl, system2 N/A,Load-Pct 8.2, Etc (f)142, Shrtft1 0.0, Longft1 94, map 139, RPM 1205, vss mph 7, Maf 1b/ min 1.831, T.P 18.0, MIL STATUS OFF, MISFIRE MONITOR OK, FUEL SYSTEM OK, COMP. COMPONENT OK, CATALYST MON inc., HTD Catalyst N/A, Evap system mon INC, SEC AIR SYSTEM N/A, AC Refrig mon N/A, Oxygen sen mon INC, EGR system ok.
Hasn't run since gasket change. First it drove home fine, than die couldn't get started , after couple weeks and battery change then it started ran couple blocks died, now starts but when put into gear it dies. Help please woman with no mechanic or money and little mechanic experience.
Edit: Thank you, screen name changed.
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Hi Kim and welcome to the forum. I'm confused as to why the VSS data says 7mph when you say it dies when you put it into gear unless you posted the freeze frame data from when the code was thrown.
Looking at a single snapshot of data is like looking at a single frame of the Zapruder film to try to figure out who shot JFK.
You can help us out here.
Start the car and let it idle until it reaches operating temp (watch your ECT data to see that) (( the data you posted seems to show the ECT temp at 142° F. That's not at operating temp yet))
On that little Autel scanner you should have around 4 screens of LIVE DATA which you can scroll through that look similar to this:
Take pictures of all those LIVE DATA screens at warmed-up idle. (make sure you know which they are).
Then, hold the engine RPMS between 2000 & 2500 RPMS for around 30 seconds and while continuing to hold those RPMS, take pictures of those LIVE DATA screens again and post all of them to the forum so we can see what's going on here.
Vacuum leaks, fuel pressure problems, or sensor issues often leave clues when you do this comparison.
(I used this website to combine those different pictures into 1 image): https://makephotogallery.net/
You can combine all of your "at idle" pics and all of your "2000 to 2500 rpms" pics into just 2 images if you want to do that).
If you need to know how to upload pics to the forum it's #8 in this link: https://carkiller.com/scottykilmer/qa/read-this-first/#post-210835
writing on the OBD were actually backwards and upside down.
Maybe it's like a smartphone and it knows when it's rotated, so you can read it upside down.
Look for something in the settings.
Thank you, I will do that in morning and repost. I think I was in freeze frame.
Let me ask you about the OBD tool, at one point I was checking it the car made a different noise and honest to goodness the words/ writing on the OBD were actually backwards and upside down. I just bought it brand new. What would cause that? Thanks again be back in morning.
That's weird. Just look at that data link connector and make sure there isn't any crud or discoloration that looks like heat damage or corrosion in the socket
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That Autel brand scanner is a reputable brand and even their least expensive scanners won't cause that
.
So there's another clue
.
Is there a communication issue between the modules or sensors?
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For now, lookout for if that happens again and proceed with the diagnosis