I pulled my ecu out of my 91 rx7 vert because I had already ordered one off ebay from a guy scrapping an rx7 only to find that they are completely different ECU's :/

 

I couldn't get the links to work so can you state the ECU Numbers?..the N350..or something like that?

 

I found out the problem, and im an idiot. it was my stock stereo amp and not my ecu lmao,but thanks for the reply. I put in a new battery after my new ecu and omp and it still wont crank over : / its obviously seized and im clueless what to do next . any suggestions sir?

 

What do you mean by crank over? Do you mean the engine cranks, but won't start or the starter doesn't crank?

 

well I mean I can hear the starter working and all but it wont actually start. isn't there a way you can manually turn a pulley or something while someone tries to start the ignition? I replaced spark plug wire and changed oil too :/

 

Not without sending someone to the hospital. Have you checked for spark? Have you checked for fuel? These are obviously two important elements in getting the car to start/run.

 

ok whats a way to check for fuel and spark? my spark plugs are fairly new and I put new spark plug wires on yesterday, fairly new fuel pump ( 1 year old) , I was thinking about getting some mmo . you just put it on your spark plugs correct?

 

Pull a plug wire off of the lead coil and place the plug wire right up against the coil bore leaving a fraction of an inch between the two and try to start the car and look for spark flashes.

 

ok so I do have spark, im just guessing its seized up because it hasn't ran in so long. im going to get some marvel mystery oil tomorrow. you just put it in the spark plug outlets correct? or in your gas tank? im not 100% sure but I heard it works wonders

 

You could try a little oil first in the plug hole but how are you concluding that it's seized? You can also try 1 to 2 seconds of starter fluid sprayed into the air intake and try to start the car.

Also, how long has it been since the car has been run. The fuel could possibly be bad and or the fuel sock in the gas tank is clogged. More info is needed here.

 

I'm thinking its siezed because it hasn't ran in one year and I'm gonna drain the fuel today and look at the fuel filter, etc. thanks for replying and I'll post an update soon

 

By rotating the alternator pulley with a ratchet it should then rotate the Main Pulley which should then rotate the engine. If it's rather easy to do then the engine is not seized.

 

Ok so I got it to turn over using some starter fluid and mmo, only thing is it won't stay started and the "add coolant" light start spazzing out :/ maybe I need a new radiator? I'm not sure but it's progress!

 

The starter fluid will only breifly keep the car running. You need to now focus on the fuel side of things. If the fuel is a year old it needs to be replaced as well as the filter for starters. After this has been done then you need to verify that the pump is working. The easiest way to do this would be to jumper the fuel check connector. Has a Black wire and a Brown wire. The plug is Yellow and encased in a rubber boot that is Black. The connector is part of the Emission Harness. It is located between the engine and the passenger fender and usually it is underneath the Emission Harness and has to be fished for as it does just not lie on top of this harness in plain sight. When jumpered it allows the pump to turn on w/the key to on. So, you will hear the pump now. Also, jumpering this plug is required because the fuel switch internal to the AFM can be damaged and it would prevent the pump from turning on. Jumpering bypasses this switch. You can also pull the rubber fuel return hose from the metal hose and place the hose in a jug and w/the connector jumpered the hose should fill a plastic jug w/gas w/the key to the on position.

 

Ok so I can hear the pump operating when I turn the keys over but don't start the car. Some guys actually walked over to me before I got it started for those 5 seconds and told me they could help me because the one knows about rotary engines, which was a relief to me because I'm no mechanic. So my next step will be fuel filter check, hoses, etc. then i guess injectors :/ the only thing that really stumps me is the " add coolant" light that pops on when I turn on my car for more than 10 seconds, any ideas?

 

Most of the idiot lights should light up w/key to on as this is normal. And your fuel injectors,namely the primaries, could be clogged. And are you suggesting the car started for 5 seconds before dying out?

 

no I mean my add coolant light actually comes on and beeps like hell, and yeah once I sprayed some starter fluid I got it to start and idle up and down for about 5 seconds then it died lol but that's with starter fluid :/

 

Okay, but what about what happened to the engine w/the info provided in post #14?
Did you attempt to start the car w/the fuel check connector jumpered?

The Add Coolant light should be an annoying buzzer and not a beeping sound.

 

We just did this last week. Sprayed the oil in(by putting the oil in a small hairspray bottle) both leading and trailing plug holes and turned the crank over by hand. we did it for about 20 revolutions or so and it seemed to get everything going smoothly. Just don't use TOO much. I think we did so it took us a lot longer to get it out and not foul the plugs.