Supercharged 89 stalling.

[Northwestvoodoo]

My 89 is not pulling RPM when I engage the clutch, let off the clutch and it picks up again..... sometimes. It also will not hold idle and stalls. When trying to restart, it turns over and will not fire unless it is left to sit for awhile.

I have changed the CPS, DIS, O2, CCRM, vacuum lines, and pulled the codes.

I get a failed stored memory code, followed by 111 on the KOEO. I can not keep it running to do the second code test.

I have cleaned all cleanable sensors that are left and checked grounds and vacumm lines for leaks.

The only thing I can come up with at this point is CamPS or fuel pressure/filter problem. I do not have a pressure gage for the Schroeder valve test. I am running a 255 pump and Joshes regulator, and 48 lbs'ers.

I am currently FILLED with loathing and hate for this car.



Any ideas would be greatly appreciated.


Thanks,
Alex

 

[91PDXmocha]

The crank crank crank til start sounds like cam sensor but I've never had a cam sensor that would make the car stall out . I don't have experience with this yet but I heard somthing about accel 48's being hard to idle in some boosted sho's

 

[Northwestvoodoo]

Just changed the fuel filter and I have pressure at the rails. I guess I will change the cam sensor over the weekend. Process of elimination is a costly method. The ShoShop tune I'm running cant be helping either. As far as the 48's are concerned, I don't have a clue about them. It idled fine before the "troubles".

91 mocha MTX dd 135k- T3/T4 custom Turbo ( 5psi )
60k, stage 1 clutch, ASFB's , Sensa-Traks + Intrax , SHOSource motor mounts , 95 knuckles, 11.6 front brakes, 6k&3k HIDs, more.

Your car sound pretty sweet.

 

[91PDXmocha]

Thank you sir . lots of blood sweat and tears and a lil help from the neighborhood Sho source How much boost are you running in the sc car ? 5 psi and secondarys are a freaking hoot !

 

[Toolman]

voodoo, I do not think your car can be saved, you should just take it to the salvage (make sure and let me know which salvage)

Cam sensor can cause a lot of problems, not exactly like what you describe, but as inexpensive and easy it is to replace, go for it and let us know.

 

[SHOspazz92]

You got another CCRM laying around?

-Sam

 

[Northwestvoodoo]

Thank you sir . lots of blood sweat and tears and a lil help from the neighborhood Sho source How much boost are you running in the sc car ? 5 psi and secondarys are a freaking hoot !

I have the basic ShoShop 9lbs kit. It's fun when it runs..... I need some ShoSource help myself.

voodoo, I do not think your car can be saved, you should just take it to the salvage (make sure and let me know which salvage)

Cam sensor can cause a lot of problems, not exactly like what you describe, but as inexpensive and easy it is to replace, go for it and let us know.

I will replace the cam sensor and see if that helps. I'm running out of "on the shelf" parts from my stash. The salvage yard is behind my shop. I am turning into the crazy old guy with a bunch of decrepit cars laying around. I understand now how this happens.

You got another CCRM laying around?

-Sam

I do and I will swap it out. This will be the second CCRM swap out since this all started. I'm just grasping at straws at this point.

Thanks for the tips gents.

 

[Sho Amo]

Have you swapped pcms? Im guessing you are running a sho shop chip?

 

[Northwestvoodoo]

Have you swapped pcms? Im guessing you are running a sho shop chip?

I have not swapped PCM's and I am running a SS chip. When funds become available I will rectify the chip issue. It doesn't seem to get any good reviews.

 

[Sho Amo]

If you reset the KAMRF, by disconnecting the battery does it start better?

 

[Northwestvoodoo]

You got me on the KAMRF (?). I did manage to pull a code 21, coolant temp sensor. Cold car. I also unplugged the "new" IACV and the idle smoothed out right away.

 

[Northwestvoodoo]

While I'm asking... I have the stupid question of the day for ya. Can I change plugs on ATX O2 sensors to MTX? Does the extra wire need to be there?

 

[Sho Amo]

I have swapped atx-mtx o2's before with no issue. What I meant was pretty much clearing the codes. I think you either have an issue with your chip, or your computer.

 

[Northwestvoodoo]

I have swapped atx-mtx o2's before with no issue. What I meant was pretty much clearing the codes. I think you either have an issue with your chip, or your computer.

I have a extra computer in my parts car. I'll pull that and give it a go.

On ATX O2 sensor-Did you leave the plug as is or cut the extra wire.

Thanks for the info.

 

[Northwestvoodoo]

I managed to get the car to run long enough to pull codes.

Gives me a PIP and O2 fault. Both are brand new. How critical is the CPS gap? Could that be the problem? The O2 codes don't make sense to me. I cleared all codes.

 

[BlackonBlack89]

With the ss tune. The hard to start problem could be caused by flooding the engine. To see if it is this just hold floor the gas when trying to start it. This cuts Thw fuel injectors and won't flood it. Just letting u know as Thw hard start problem may be from this and not a sensor

 

[Sho Amo]

I dont remember and extra wire. The only thing I remember different is a small notch in the plastic plug that I cut off.

 

[Northwestvoodoo]

With the ss tune. The hard to start problem could be caused by flooding the engine. To see if it is this just hold floor the gas when trying to start it. This cuts Thw fuel injectors and won't flood it. Just letting u know as Thw hard start problem may be from this and not a sensor

I appreciate the tip and I think your right on the tune being rich. You can smell the fuel from the tail pipes. I have used the floorboard method on previous occasions before this last problem to get it started. I need to get the car to a point where a good tune can be done.

I dont remember and extra wire. The only thing I remember different is a small notch in the plastic plug that I cut o

ff.

Yes on the plastic plug. I had to trim the tabs on the sides. The MTX plug had 2 black wires and 1 white wire in a 4 pin plug. The ATX had a extra gray wire for the 4th pin. So I cut the wire.

Any word on how critical the air gape on the CPS sensor is? Is there any wiggle room?

 

[Sho Amo]

The gap on the Crank sensor is important. should be .030 i believe. The cam sensor doesnt have a gap.

 

[91PDXmocha]

I think a commen paper buisness card works great for a CPS gap tool . I've never had a problem with the gap , space with the card ... turn the sprocket a few times to make sure it's not touching and wham bam thank you mam , cps good to go .