Ok- i have some problems with my TPI car now that i've put in my new motor

Check this link so that i dont have to re type everything.
Thanks

Link to previous post-

 

I have a few questions of my own that could be your problem

Are you using the stock Memcal and Prom?
Are you using the 305 Knock Sensor?
Are you getting a SES light?

If so then you have a few problems. you need a 350 memcal and prom. You also need a knock sensor from preferably a L98. Then you need a prom burnt for your app. Your running 24# injectors on a stock prom whether its a L98 or LB9.

 

yes, stock chip, 305 knock sensor- disconnected.

and 24#injectors

I guess i should get it reprogrammed and then try again huh?

 

Yes, and DONT run the car like that it has no clue what to do and will be running very lean (your glowing headers). Also that knock sensor needs to be on there. PM me about a prom and we'll see if we can figure something out on that (it does require soldering and such). My friend and I that you met went and looked at a 350 car that the guy had used the 305 TPI setup on and it did exactly what you're talking about (this was a MAF car). Do you know what lobe seperation of cam you used?

 

I run dem thar Holly doble humpers butt ive ben dablen in that thar fool injectin fer a cople yars. I dont no why ima helpin caz I ant got no cents are nothen, dont reely no what ima doen, cents I run carbs two, butt ifen ya'll runin 24 powd injekters wif that thar 305 chip, ya'll gonna run pig sqeelen rich. Ifen ya'll trien to git it runnen good enuf to git down that thar rode, git one of them thar 350 promes from chivy and a 350 nock centser. Sit yer timin at 8 degresse, sit yer minanin ida settin and thoddle posishen centser two specs an you shud be good to gow.

 

OK- i got my ZIF today and unsoldered the stock prom- put the zif in, temporarily taped it, then put the prom on the top of the zif and pushed the tab down to hold the prom in it.
put it back into the computer, reconnected the positve batt. terminal, then pluged in the diag scanner, turned on the key and the scanner said it couldnt connect to the computer.

So, i took the pos. bat cable off, took out the memcal, soldered in the zif and reconnected anything.
Same result-
whats wrong now?
thanks
BTW- I do have a 350 knock sensor installed too.

 

Hold up!!!!!!!!!!!!!!! what ecm are you running that you have to unsolder the prom.
I have 7165 ecm on my car and a 7730 ecm waiting for me to decide what I'm gonna put my other tpi setup in and I don't have to un solder anything on either to chips.

 

The stock Prom from the memcal is what i needed to take out to put in the ZIF.

And my ECM is the stock 86 305 TPI Automatic MAF ECM- not sure which one it is..

Im just pissed b/c now nothing works- so my soulution would be to replace the ECM and the Memcal...

 

86 tpi is the 7165 ecm. Thats the one I know more about.

Would the car crank before you unsoldered the prom?
If yes then are you sure you put the prom in the right way?

If the car would not crank before you unsoldered the prom think back to what you changed after it last ran. I understand you were having problem from the start but it would crank, correct?

 

Yes, ran and drove, and i tried putting the prom back in both ways- and it would crank and start, but would die shortly after- either way i did it..

im just so discouraged right now..- ive spent 5 months and $7000 on my project and im really short on cash so i cant really afford a new ECU and all that stuff..

 

Are you putting the stock prom back in?

The notch at the end of the chip faces the handle on the ZIF socket, which should be the side closest to the end of the ecm.

Again the notch should face away from the NETRES (limp home resistors)

Might want to check the soldering. Why didnt you just get the adaptor?

Can you send a pic of you prom and memcal?

I know it is frustating so you can email me and ill give you some more pictures and instructions. Bsmith91@midsouth.rr.com

 

I would send u a picture, but mmy setup is totaly trashed- i figured out i did have the zif and the prom in right, and i was trying to check how tight the soldering was from the zif to the memcal and i guess i pulled to hard and ended up breaking the zif, some of the legs, and a couple of the little connecters in the memcal.. - boy do i feel like a smart one- and by no means did my setup look anything like your picture...

I need to find another memcal, &zif, and try it again, maybe instead of soldering i'll hot glue the ZIF to the Memcal??

Let me know if anyone has a spare memcal laying around for an 86 to 88 TPI automatic..

Thanks for all your help everyone!!

 

Dont forgot though you might want to try and find a memcal for a 350. The NETRES are different in the 350 apps.

 

Try this guy

 

This guy is legit

 

OK- i contacted one of them that had like 4 different memcals for sale..

Thanks..

 

I was having a little fun in my earlier post, but the info I gave was correct. You're spending your money on American and I'd hate to see you wash the walls down and fry the bearings sawblading on the ignition trying to fire the engine - which is a possibility with the 305 chip with 24# injectors - I have seen it happen. Don't try to fire it again without the right PROM. Also.. check your oil to make sure theres not any fuel in it already. If it smells like gas already, replace it and the filter.

I'm assuming you had a 1986 305 TPI and still have the original ECM (165) and wiring harness and still have the cold start injector.

I don't know what others are telling you, but if I were you, I would beg for or borrow the $50 or so that it would take to get a NEW 1988 350 PROM - this way you know exactly what your getting and it should plug in and get you mobile. My local Chevy dealer was able to get one for me when I performed the same swap you did a couple of years ago.

First choice - get the 1988 350 CHEVY PROM (for your gear ratio) since it has the provision for the cold start injector and has the last updates available for a 350 TPI without VATS (vehicle anti-theft system). The 1987 350 CHEVY TPI PROM will work if you can find one used, if you buy from the dealer, get the 1988 CHEVY 350 TPI. The 1989 PROM will not work since it has VATS (your car won't crank),,, SOME of the 1988 PONTIAC 350 chip has VATS and will not work, 1987 Pontiac 350 TPI prom will work. Look at the listed PROMS below - these are the only ones that I know for sure will plug in and go for you - depending on your gear ratio - part numbers are on the right.

CHEVROLET
1988 5.7-8 A/Trans(MD8) Fed, 2.77(GH3) - 16075399 5400ABYA
1988 5.7-8 A/Trans(MD8) Fed, 3.27(GW6) - 16083268 3269AKXX

1987 5.7-8 A/Trans(M39) Fed, 3.27(GW6) - 16068654 8656ABWN

PONTIAC
1988 5.7-8 A/Trans (MD8), Fed, 3.27(GW6) w/o VATS (UA6) - 16083286 3287AKXY

1987 5.7-8 A/Trans (MD8), Fed, 2.77(GH3) - 16068680 8682ABWW
1987 5.7-8 A/Trans (MD8), Fed, 3.27(GW6) - 16068672 8674ABWT

The four proms listed in the other post, two are for a 305 (86 and 87) and I can't find a crossreference for the other two. Before you buy one of the other two, make sure you can verify that they are for a 1987 or 1988 350 CHEVY that best matches your gear ratio. Again, I'd buy NEW to make sure you know exactly what you're getting.

Check all your grounds again, set the fuel pressure as low as it will go - which is with the screw all the way out if you have an AFPR, set the base timing to 8-degrees (assuming the timing tab as set at 0 when the engine was built) and be sure to adjust your minimum idle and TPS. This is very important - you want to have the TPS at rest reading around .5 volts and fully open reading at least 4.5, but get it as close to 5V as you can.

IF there is nothing else going on, the engine should run well enough with the 1988 350 PROM that you can take your time getting the stuff to burn your own chips - it might even fall in that "good enough" category.

 

OK- Bad SS - i appriciate it- lol- i wish you coulda told me that yesterday so i coulda went & ordered one.... but that ok- better late than never- I will call them tomorrow and get one for 88 350 w/ 3.27 posi rear end a/t.
Thanks!

 

This may be a wild question. You mentioned you're using vortec heads?

Did you get the vortec base?

What you are explaining is the exact same thing I did 10 years ago. I put the vortec headed crate motor in to an 87 and it wouldn't run for ****. Ports never lined up as an created the largest vaccum leak known to man....

Since you are chasing your tail with the ecm I would assume that you have the matching base for those heads.....

Whooops shoulda read further into the sig.

Sounds eerily familiar....

 

Yes, i have the vortec base, and high flow runners..