to add to this, the throttle body is not in LHM, and previous to this there was some sort of check engine light, we didnt get to read the code before this incident though.

Paul

 

Crank position sensor?

 

i second on the crank position sensor too.

 

if it was that, it should not run at all, as it is it starts and stalls. Also, the CPS is recent.

 

Well, the recency potentially rules it out, but when my CPS went it had some intermittent side effects. Rough running, stalling right after after a hot start.

 

Sometime the CPS will fail/be intermittent when hot, but be fine when cold.

Just re-read, you said it was recent.

How about a bad MAF?

 

I have some extra MPF's, though the one in it is not old (about 4 years), but I will give that a shot. I do actually still have my original CPS, that still worked fine as well, so that may be worth a shot too I guess.

 

try and depress the shrader valve on the fuel rail with a pocket screw diver while someone cranks the car. just keep your face out of the way. ask me how i know that one.

 

yup i second the notion above, sound quite much like fuel pump troubles this one.

There should be some pressure on the fuel rail regardless of is the engine turning or not, if the pump has failed then there is none.

Fuel pump dying didn't result in any fault codes on my part either, di casette on the other hand did a bunch.

Also you might want to check the fuel filter.

 

My car would do something similar... Only after I filled up. Within a mile or two it would stumble when i touched the gas. As soon as I took my foot off the gas from the stumbling the car would die.

Was a bum EVAP purge valve. I would assume the 9-5's have these but I'm not sure. Was on the passenger front fender on my NG900. Makes a ticking noise at idle. I don't think the bad valve was making that ticking noise anymore. I keep it clean with some WD-40 and a few drops of motor oil now.

 

Also, when my fuel pump failed it would not even run or prime. Was just stone cold dead. I have heard of people whacking the bottom of the tank by the fuel pump with their hand or a rubber mallet while somebody cranks over the starter.

Could also throw some DRY GAS in the tank to be sure about the water issue. Or call the station and ask if they have had any reported issues.

 

Dry gas is in now, oddly the fuel pump is running when you crank it, and like I said, sounds normal to me.

My past experiences with failed fuel pumps have either been a really noisy pump that had poor pressure or volume, which caused power problems when under high throttle, or simply stone cold non runners that blew fuses or did nothing at all. One that runs, sounds normal, but does not make enough pressure to even let the car idle sounds very unlikely to me, but I will for sure do a fuel pressure test at the rail and see what I have there.

 

Well the crank position sensor is not used to keep T7 "running" It is used to start only. Once the engine is running it uses the DI to tell where each cylinder is in the combustion cycle. I remeber reading that in the WIS once. I don't remeber when it switches over to using the DI though, if it is something that it does imediately or waits till the motor is hot.

If it were me I would put the throttle body in LHM and see if it will run. Perhaps there is an issue with the thorrlt body. In Limp Home Mode you will be able to open the valve with the accelerator.

Tboy

 

Well the crank position sensor is not used to keep T7 "running" It is used to start only. Once the engine is running it uses the DI to tell where each cylinder is in the combustion cycle. I remeber reading that in the WIS once. I don't remeber when it switches over to using the DI though, if it is something that it does imediately or waits till the motor is hot.

Tboy

I believe it completes 25 cycles or something like the before it switches completely over to the DIC, which at an idle of 900rpm doesn't take very long.

i dont know anything about the 9-5 motor - but make sure neither of your hoses slipped off the IAC valve.

Trionic 7 doesn't use an IAC, it has a electronic throttle body that takes care of all that jazz.

Tboy's idea of forcing LHM is one to try, just to see what happens and give you more ideas.

 

i dont know anything about the 9-5 motor - but make sure neither of your hoses slipped off the IAC valve.

 

Others have had stalling and running issues ( myself included) changed out the CPS and all is good... Mine woudl stall as I slowed to take a corner or stop

SO I donp;t know if the CPS comes into play maybe when Idle gets low ( coming to a stop)

 

I second Tboys suggestion, It definately wouldnt hurt to do a quick check of the Throttle Body, may need a reset.

I had to do this to my 9-5 recently as it went into limp home mode and wanted to die on me.

 

when the cps went on my ng it would start and run but giving it any gas would not get it to do much. it was like it was hitting a rev limiter, just barely over 1k rpm. and when it was cold again it wuld start and run fine for a couple minutes but then die again.

just how recent is the cps?

i know t5 and t7 are different but maybe you can swap with a known working cps and just check it out.

 

Well I hooked up a fuel pressure tester to the rail, and it has perfect fuel pressure so that rules the fuel pump out. Also the throttle body seems to be working correctly. So, even though the CPS is not very old, I am now leaning toward that unless it's some unusual problem like a failed ground that's causing either a sensor or some other thing that the car needs to run to have no signal.

 

Hmm. Well today looking it over once again, I decided to hook a feed line up to the fuel rail, jumper the fuel pump and pump some fuel out to see what it looked like. After about 3 gallons of brown water coming out, I finally started getting some gas :x Just great. Anyway, after getting down to the gas, and adding some dry gas (again) it runs now. No idea what sort of damage was done to the rest of the fuel system, but potentially it goes from the fuel pump, to the injectors and possibly cyl rust from the 2 weeks it was sitting with water in the cyl's and entire fuel system. I am going to wait on a new fuel filter before I drive it much, but yeah. Bad bad bad gas.

 

Well at least on the bright side it's a gas station you're close enough to when it comes time to whip out the beating stick.

 

Brown water...I can't believe your car won't run on brown water.....

 

well it doesn't have a BioPower tune yet.*

Paul