Wicked_razor

i put the engine from an 89 convertable into my 86 na, alot of the electrical clips are different, anyone from around northeast kansas think they could look at it for me or somethin? it starts, but wont stay running, as soon as the key is turned from start to run it dies

anyone got any ideas?

gimme an email
viper_2000_15@yahoo.com

mike

XimbueX

Without the wiring harness or computer from the model year of your engine you may be looking at an unfixable problem.

Wicked_razor

i can get the computer, but not the harness....
is there anyway that i can just change eevrything from the old engine onto the new one, like just swap the blocks?

rx7_ragtop

Yes... use your OLD fuel injectors (they're low impedence, later ones are high- that is probably the problem!) and your OLD throttle body (the TPS is different! And you have to grind a bump off to make it work on the later manifold!) Of course you need to use your old AFM. The old computer is the one to use. Everything else should be fine- you'll have to either wire the VDI open or figure out a way to actuate it.

Wicked_razor

VDI and AFM?? im not too good with the abreviations of things

tesla042

don't worry about the VDI for now... when it's running, then worry.

the AFM is the thing right after teh air filter that measures the incoming air. Air Fuel Meter.

-Tesla

Wicked_razor

hey, umm...yah, ive got air deal hooked up, everything is hooked up, only thing thats not is that we have one injector from the 89 engine cause one injector was f***ed up

rx7_ragtop

If that is in a secondary it should run ok up to about 3600-3800 rpm. If the 89 injector is in a primary, you will have problems at ANY speed. either way, replace it with the proper type.

Brad