so i keep having issues with my car. im running a obd2a jumper to obd1 chipped p28. first i had a CEL code 9 No 1 Cylinder Position n was told it cud b dizzy, so i bought a new one. also was told it cud b wiring for fuel injector for cylinder 1. check and seems to b working. wen i unplug injector car idels rougher. so i assume its working. i also have a p72 for car and that one wasnt throwing cel 9. instead it had a CEL for my IAT sensor, changed it, then got 5 codes for cylinder 1,3,4 misfire detected. and a knock sensor 1 circuit malfunction bank 1 or 1 senor. WTF!!!!! idk wats going on. cleared it and code for knock sensor came on again. plugged in chipped p28 and my code 9 for No 1 cylinder position was still on. I NEED HELP. was told by mech i have sum bent valves. i still need to check compression in all cylinders. my car stutters as i give it gas. only does this wen i first press the gas. n e help will b great. all this is going on with my new dizzy FYI. oh yea and my damn rpm isnt working. It did before. it works if i bypass from dizzy but not by itself.

 

im thinkin i shud fine another ecu just to b sure. u guys think its my engine harness? ecu harness??

 

Did you check to make sure your timing is at TDC?

 

Na havent done that. Shud b good but i will double check today

 

looks off right?

 

You need to line the one ,ark on crank pulley by itself up with the pointer. The one that looks white in the photo. It needs to be exact before you can look at cam gears

 

Line it up to the white notch on the crank pulley(TDC) then look at your cam gears and make sure that they horizontal lines marked on both cam gears line up.

 

 

Timing looks spot on!

So that can be eliminated.

 

another dead end for me =( n e thing else u guys think it cud b? motor didnt do this till 3months after swap. it was n original obd2b gsr, now its n a obd2a LS. i can provide plenty of pics and videos just let me know

 

Bump...

 

Sounds like you have a wiring problem some where from the ecu. To the dizzy start trubble shooting and testing wire with volte meter

 

damn.....i dnt have the tools nor the knowledge for wiring.....i do have a ecu harness from my parted gsr. the original ecu harness for motor. i dnt really wanna tear up my car to switch it. but im thinking im going to have to. wat do u guys think? that ecu harness is a obd2b. and the LS has a obd2a.


QUICK QUESTION, IF A OBD1 LS MOTOR IS PUT INTO A 96 LS (OBD2) WILL THIS MAKE A CEL??

 

Depending on which ecu you run!

 

the stock obd2 ecu. engine harness will b the obd1 with the obd1 engine

 

Then you need to run the obd1 ecu, since the obd2 ecu will have a few more sensors it will be looking for that the obd1 harness does not support which will throw a CEL.

 

damn. so wat wud b the best route? cuz then this will b an issue during smog. wat about using the obd2 harness on the obd1 engine? i know the dizzy and injectors r different, n e thing else?

 

You can use the obd2 harness for an obd1 motor. You just need an obd2 oil pump since all obd2 have the CFK sensor and obd2 injectors/distributor/alternator.

If you run an obd1 ecu then you don't need to worry about the CFK sensor.

 

kool then ill just swap over the parts. just alt. dizzy injectors, oil pump. wait.....i need to remove TB so i can remove oil pump right?

 

Edit: I meant oil pump not water pump.

Yes you need to remove the timing belt to access the pump.

 

Koo thanks. Learned alot. So now back to my problem. Swap ecu harness??
And if i swap harness will this effect california state ref/smog passing standards?

 

I am thinking your main harness in your engine bay could possibly be your problem. It may have cracks or some **** wrong with it but your best route is to swap them out to see if it resolves your issue.

I'm not from Cali so I wouldn't know if it will affect smog. I just know that CA is a PITA about smog. ahaha

 

damn so my engine harness......ima have to act fast. my homie is swappin engines n he has his obd2 harness off with engine. ima try this out then. ill let u guys know how it goes

 

Swapping the harness out is simple. Might be a PITA to get some connectors off but overall simple. Goodluck

 

Engine harness yea but idk about the ecu harness that one is a PITA!!