so there we had... I did complain about the 2007 GP base, not starting up with the remote starter a few times... as in it cranks, starts firing up, then dies... lights confirm that its on.. then electrical burning smell......you know that little poof or wtv it does, then the engine catches on.... sometimes when starting there would a delay from that poof and the car running..

So today driving in the parking lot, the pos decides to stall just before I turned halfway in an intersection in the parking lot... people were waiting, getting angry, and pickup trucks flooring it by us... no CEL, nothing in the information center

I tried restarting the car, it was doing what it does above... cranks, about to start, then dies... kept happening, until my dad took over, and he said he put his foot on the gas to keep the car going ,and then started ripping it in the parking lot.. hehe after that it seemed fine.... yet.. until we have another problem.

Update-... talked to my dad, he said that at one point after he drove off with it, the RPMs were jumping from 1500 to 3500, like it someone was pressing the throttle... he was holding on the gas pedal to keep it running.... but not doing that.. he did push it before...

I did read up online about this... not sure what it could be... At first the remote starting thing I can deal with it. This is beginning to irritate me.. feels like we bought a lemon.. we've only had the car for 4 months and problems are starting to add up. ABS.Trac light in the cold needing to restart, major engine vibration with brakes applied at a stop.

Also to note its cold winter weather here, on and off, in Montreal. I did call the owners before and they said they had no problems with the car and really wanted to keep it but the buyback was too much.

I was suggested by users on here, to clean MAF... etc.. haven't done it yet.... due to weather.... and I sometimes doubt that a dirty MAF would do this? The dealer did change the air filter in March 2011... and the car was on the road since feb 2007.
Then there's a bulletin about the crankshaft position sensor..... on the 2007.... don't know if its that.. or could be..
But I do think there is something strange going on with the delay in firing.. off the start.
Feels like this is gonna be another piece of junk.... I mean the Oldsmobile we had, had issues towards the end, 14 years.... but this 4 years already... okay well 5 for built date

The random stalling and long starts can be CPS related, but I'd personally still try to clean the MAF (and/or unplug it and see if anything changes just don't go WOT while it's unplugged) and also clean the throttle body first since the CPS is sort of a pain in the ass to fix. Do you notice the tachometer doing anything funky that isn't matching what the engine rpm is actually doing. Sometimes you can watch the tachometer drop to zero THEN the engine will die, sometimes the tachometer doesn't really show any erratic behavior though (had a CPS problem on the girlfriend's dad's 05 La Sabre. The tach never showed anything funny, but a scan tool showed some weird readings, and the car would stall out of nowhere or just not start. Replacing the sensor fixed the problem completely)

Other than CPS, MAF/TB, the only other thing I can even think of that would cause something like this is fuel related since the starting problem exists in open loop and not just closed loop.

_________________

Dubs:00 VW GTI VR6, Low and Slow 91 VW GTI 8v, Shave the Bay!! 91 VW Cabriolet 8v, bitch Basket
GP's:04 GP GT, Past now G-Ma's Girlfriend's 97 GP GT, "Project Pink Power"

thanks Matt.... I did write an edit to this.. as the RPMs surged from 1500 to 3500 on its own... while my dad held the gas pedal... at a fixed position....

so far the tach seems fine, not when I have my foot on the brakes, and there is vibration felt throughout the car... this was before...
I should try hooking up a scan tool sometime... and drive around with it... so if the rpms vary in the scan tool and the tach doesn't.. then the CPS might be off?

thank you

the 01 did the same thing ended up beign the crank sensor

_________________

92 LeBaron Convert: Turbo 3L 97 Grand Prix GT 4dr "Frankenstein": L67 4t65 swap
97 Grand Marquis: Summer DD 99 Grand Prix GTP: Top Swap Beater

I dunno maybe..... thing is I didn't see the CEL........ so makes me wonder whether to change sensors...
how about changing the fuel filter?

I'm still frustrated... feels like driving a 15 year old car now lol I never knew about the CPS going on these, thought it was always okay...

in addition.. even when we got the car I always seem to get like 230 km, on half a tank.. both city and highway... as posted in another post, its a bit below average..

The CPS usually doesn't throw a code, at least in my research and experience with it. As for the fuel filter, it's in the tank on the 07's and the tank has to be dropped to get to it. You could check the pressure at the fuel rail though to make sure it's within spec.

_________________

Dubs:00 VW GTI VR6, Low and Slow 91 VW GTI 8v, Shave the Bay!! 91 VW Cabriolet 8v, bitch Basket
GP's:04 GP GT, Past now G-Ma's Girlfriend's 97 GP GT, "Project Pink Power"

nope it does not the car tends to not run long enough to actualy set the code

this is when i would use a scope and look at the signal formt eh sensor as the car is trying to run.

_________________

92 LeBaron Convert: Turbo 3L 97 Grand Prix GT 4dr "Frankenstein": L67 4t65 swap
97 Grand Marquis: Summer DD 99 Grand Prix GTP: Top Swap Beater

Good to know that its in tank filter... then again.. would have been nice if it was outside...

Ya I was thinking that too fuel pressure check.. I think we have the tools for that these run at about 50 psi?

Well when the car stalled out in the parking lot, we had it running for a good 10-15 mins, already, from home to there... so the car was warm and all...
Just to reinterate in case i didn't make sense, which I usually do not... the car cranks, catches, fires up but dies... after... plus cutting out on idle... happens cold and warm... or I think.. closed and open loop...

I'm still gonna hook it up a OBDII scanner, and run a log... when its warm, and from a cold start sometime soon.. what should I look for in the measurements.. I only know a few off hand.... map, maf, fuel.. (i think there's no fuel pressure reading, I did hook it up before... but only idled the car.. lets say the rpms show different reading than on the tach.. that would be indicative of the CPS? I'm just throwing things out there.. as this is a very grey area for me now.... hihi!

edit - one thing i noticed when on an overpass, and the car is angled down on a slope, the idle rpm stays higher.. like 800.... its been weird on this one.. idle changes... what i think independent of the ac compressor.. I know it changes too for that...

-- Thu Jan 19, 2012 5:15 pm --

Went for a run, and ran some OBD 2 software, with some screen caps
some are mix, as in metric and English units


I shut the car off and restarted..


coasting


idling after a run


inital startup, note that I started it up after it was driven for a little while not on a cold start




o2 intial start up

I still get that vibration when holding the brakes at idle and in D.. the rpms drop to like 650.. ish, car usually idles 700... and with rear deforster on drops lower than 650..

That MAP sensor we reglued, wiggles bit... but this startup problem happened even before this stalling issue..
Gas milage is not good...
The oil did smell fuel like... but I was idling a lot before this..

thank you