No injector pulse? help please!

[beerxd]

i have just swapped a 90 gte engine into a 89+ na shell.. i have repinned the B1 to fit the body harness and everything seems to work fine.. the engine has spark and is gettin fuel to the fuel rail when i crank the motor it stalls right after doesnt want to idle for nothing....ive been looking intensively and havent found anything that can help me has this happen to anyone? idk if i missed something or havent pluggd something in but ive checked 100 times and everthing seems right

 

[beerxd]

can a 89+ auto ecu not work with a 90 5spd harness?

 

[suprakidd]

do you check for injector pulse? if its starting at all then the inj are firing. what it sounds like is that you have a vacuum leak, meaning there is unmetered air geting "sucked in" somewhere after the afm..
hope this helps..

 

[beerxd]

im going to check all the pipes from the afm through the intercooler to the TB hope that is the problem

 

[suprakidd]

check the vacuum nipples on the tb, iacv, plugs on the accordion hose, and upper and lower intake. make sure no air is getting in after he afm..

 

[beerxd]

i checkd the injectors with a noid light and they arent firing but they have 12 volts going to them... also the motor stood on when i sprayed starting fluid in it.. can it be bad ground?...

 

[suprakidd]

could be a couple things. clogged inj, inj resister, or the inj are plugs on the wrong inj... maybe try those and see.

 

[beerxd]

my inj resistor is from a 88 supra yellow plug i have a 90 grey plug can that be an issue?

 

[AJ'S 88NA]

88's are low impedance, 90's are high impedance.

 

[hvyman]

All gte use low imp with injector resister.

Any codes?

Ecu grounds on intake manifold?

When you spray carb cleaner does it stay running or does it die when you stop spraying.

 

[beerxd]

so it isnt the inj resistor? im waiting for a friend to lend me his ecu scanner to bring up the codes so im unsure what comes up and all the grounds are connected.

it also stops running when i stop spraying

 

[beerxd]

can the CPS cause this?

 

[jetjock]

Yes, but not in your case. And no scanner is needed nor will one work. I suggest you RTFM...

 

[AJ'S 88NA]

so it isnt the inj resistor? im waiting for a friend to lend me his ecu scanner to bring up the codes so im unsure what comes up and all the grounds are connected.

it also stops running when i stop spraying

Don't need a scanner for a Supra.

http://www.cygnusx1.net/Supra/Library/TSRM/MK3/manual.aspx?S=FI&P=23

 

[beerxd]

ok that makes my life easier thanks aj

 

[ifyouaint1sturlast]

If the injectors are getting power, then they aren't getting ground. The ECU grounds the injectors.

So the question is, why isn't your ECU wanting the injectors to fire?

Why don't you ask it?

 

[beerxd]

well i have a 90 5pd harness repinned the b1 with a 89 auto ecu.. can the pins not match due to the year difference? since u said
the ecu grounds the injectors? or maybe bad ecu?

 

[beerxd]

anyone??

 

[hvyman]

Highly un likely that the Ecu is bad.

Have you checked your codes yet?

Also is most cases 89-90 have the same connectors.
http://www.supras.nl/index.php?option=com_content&task=view&id=34&Itemid=50
That may help to verify the wires are in the right order.

 

[beerxd]

well i changed the ecu and now i have an injector pulse the car turns on idles high then stalls sometimes itll stay on for a few seconds then stalls i have no idea now what can be wrong


i checkd the codes i got 22 24 51