Just Bought a 300zx Z32 : ECU CODE problem. HELP! Headache!

[Duce40sx]

Howdy Nismo peeps,

I just bought a 1990 300zx (non Turbo) 5-speed.(vg30de) 2 days ago.

Today at noon, I drove the car and hit a few nice Corners, and the Check Engine light came ON.

1. Car ran like crap afterwards. Probably (safe Mode) activated2. Did a "Jumper" Code check. It had Code 51. (Injector Circuit)3. I washed the engine bay (GUNKED it out)and sprayed water on it. (bad Mistake, I had water in the Spark plug Hole. Dang!)4. Sucked out all that water, (stupid Coil plugs didn't seal)5. NOW I have CODES: 51 and 34 ! OMFG!

Code 51: Injector Circuit, Code: 34: Detenation (knock) senso

***Some of the Injector Connectors and the Coolant temp. Sensor is missing the Squarish Metal clips, and or is Broken. (Snap on- Connectors fragile= broken)

How can I get rid of THESE CODES?

What are the COMMON causes? Recommended Priorities to Look at?

Please HELP! I need to REGISTER and Smog it...AH!

[freakonaleash1187]

Well, you could either have a bad connection or harness, of one of your injectors could be out. Ohm the injectors and see if they are all in spec.

[PublicMenaceINaZX]

You can pick up a new set of plugs for i think it was 50 bucks. That is a dealer price. I had a hook up at one and ended up getting them for 27 bucks but i think you can get them cheaper from a store. If your plugs are lose that is a big problem. So change that and i dont know about the knock sensor, but you should dry it out all the way. The car might be running bad because of the water too.

[Duce40sx]

Okay,

I took off all the intake manifold and valve covers, egr, etc.

Bought New:

1. NGK Iridiums2. Knock Sensor (Det sensor) 3. Gaskets

**** I think one of the injector is BAD. (Inject #6 looks like it's worn out, shows the following characteristics: You guys think it's bad? I want a second opinion.

** must i replace 1 or ALL injectors? (since it's a lot of work to get To).

* In addition, All of the Injector CONNECTORS are either Broken or brittle. Can I is there a way to get NEW ones? or Retrofit? Almost all the Engine bay's plug connectors are old and brittle. !!!! ah!

[[

[Canyoncarver]

You should have just tried cleaning and drying out the connections first.

[Duce40sx]

I know. Should have just cleaned the connectors.

Now it has turned into a Major Engine overhaul.

1. new det sensor($70 on ebay,$120 at ETY parts, $163 and $202 at dealer)

2. new det sensor Subharness ($55 at Universal City Nissan Dealer)

3. new Injectors $65 each for Reconditioned. $130 eac for NEW

4. new Coil Packs ($80 each) x 6 = $480