sncboom2k

Yes MAF is pointing the right direction - and no holes in the rubber boot.
TPS - I had watched the voltage on the Solus and it seemed smooth throughout the range. I replaced it this morning regardless. Will test again shortly.

The Delphi FPR is junk. Putting the AC Delco back on today and ordering a new AC Delco FPR. At prime (engine not running) I get 36psi. Running at idle I get 31psi and without the vacuum line on the FPR I get 41. All way too low.

sncboom2k

Here is a video (in my dropbox) of what happens when I press the pedal down 1/3 way. (Once a high RPM is reached - the cutting out stops.)

This video was taken after I changed the TPS. Same issue.

https://www.dropbox.com/s/zxmst0mp32...94515.mp4?dl=0

The service engine light is the P0336 code.

sncboom2k

Original Delco FPR is back in the car - 36psi at idle again.

sncboom2k

Can anyone recommend a good PC based software and connecting cable to read and save the programming in the current OEM computer (ECM)? I'm thinking of buying a reman and majority need to be flashed.

They all mention a "manual way to flash them in the car" - but I can't seem to find those instructions either.

Can anyone recommend a good reman computer? I see the Cardone's all over for about 120.00

(I want to have a stock computer on hand for after the tune as well.)

Such as this one:
https://www.ebay.com/itm/Engine-Cont...1Z4fAM&vxp=mtr

Thanks

sncboom2k

Ok finally got all my parts in and replaced the following:

ICM - AC Delco
Air Temp Sensor - AC Delco
Crank Shaft Position Sensor - AC Delco

Unfortunately it's still stalling during acceleration, still has the P0336 code, and still (which we know it will until it is tuned) dies at idle.

If anyone has any further recommendations, I would appreciate them.
All sensor except for the knock sensor have been replaced.

I'll try to get some live data while driving and while it's cutting out - but if anyone has any advice in the meantime I'd appreciate it.

So as I was typing this in - the car was idling behind me up on jack stands. I lowered it down (still idling) and it died as soon as the drivers side wheel was on the ground - what the heck?

And now it cranks over and will not start.

I'm baffled to the point of no return - about to administer gasoline and a match....

sncboom2k

Car won't even start now. I put the original ICM and air temp sensor back in - no change - won't start. Cranks but nothing.

After an hour I pulled a plug to test for spark - confirmed I had spark. Put it back in and the car started right up. Idled for a while and turned it off - started right back up when tested.
I don't know...

Local hot rod mechanic who builds 4th Gen camaro's etc believes it's the Summit Racing opti. Says he'll look at it only if I change the opti to an AC Delco.
(Of course he'll be happy to put one on for me - but he was nice enough to tell me to do it and save myself a bunch of money.)

So I'm in search of a decent priced AC Delco opti. Anyone have a good affordable source?

Injuneer

I'm not even sure if AC Delco uses the Mitsubishi optical module any more. No more new units from what others have posted, apparently they are all "rebuilt". They have a core charge to cover return of your old unit.

sncboom2k

We'll know shortly when it arrives. I'll pop the cover off and check. Otherwise what on God's green earth are we paying 400+ for?

I've had no time to strip it back down yet. Hopefully tomorrow. I'll keep everyone posted.

Thanks again for the help all!

Injuneer

I've heard they are now sealed, and opening the case voids the warranty. That was posted after I reminded someone to be sure to loc-tite the rotor screws before installing.

sncboom2k

My luck continues...

The Reman Opti from AC Delco arrived today. Broken in the box. Awesome. Pics attached. So now to return and await another one. It was poorly packed in the box from AC Delco. Loose in bubble wrap.

I did take the chance to confirm both Fred.
1) They have purple loc-tite on them.
2) They do still have the mitsubishi sensor (pic attached).

Let's hope the next one that arrives has the same but is not damaged.

I'll post back once it arrives and is installed.

sncboom2k

So now it's all stripped down awaiting the opti....

Injuneer

No luck at all there.

Did it include a warning that the warranty would be voided if the case was opened?

sncboom2k

Did not see a note in regards to that - but I'll take a closer look at the paperwork that comes with the next one.

I forgot to get a pic, but the cable that connects the opti is included and it is connected and shrink wrapped to the unit so you can not remove it without cutting the shrink wrap. It also has a piece of rubber hose around the 1st 4 inches of the wires that is filled with RTV. Apparently they don't want the wires getting wet in this new design.

The rest looks the same as it always has.

sncboom2k

Ok after a couple of weeks - I finally have a working AC Delco opti spark installed in the car. No more P0336 SEL - so that's a bonus.

Unfortunately, still cutting out when I give it the gas. No idea what is causing that.
I've called the tuner in my area to get my car in for a tune - but I'm going to have him do a couple of things while it's there.

Any further ideas are always welcome. Thanks guys.

sncboom2k

Since it's not throwing any codes while cutting out under load - what are some of the sensor data I should be looking at when it happens? I'm going to connect my Solus and try to get down the street to see if I can find a reading on something.

What would be best to look at?