86 nissan 300zx not running right

[master_cat]

Ok my car has some malfunctions lights just came on and stayed on radio radomly coming on. Also the car will not start at all .So i pull the theft warning / h/headlamp relay car will start no power and a relly low idle.Any help is great cause i am stumped thanks guys

[Infinitiguy19]

What did the codes up as when the Check Engine Light is on?

Check the wiring to the radio.

Was the car broken into?

[master_cat]

The check eng light is not on all previos problems are gone now except eng no power relly low idle

[evildky]

check for codes anyhow, check the connector at the mas and clean and adjust your iacv

[master_cat]

codes 13 23 31 showed up gonna go out and clean some connectors thanks for any more info u give

[evildky]

that chts code will amke your car run stupid rich tot he point of flooding it, it's a pita to get to but I'd deal with that one first

[master_cat]

I will remove this sensor tomorow morning so this could be the culprit of no power and a crapy low idle id love to have my power back lol

[evildky]

don't just remove it, removing it a bad connection or a bad chts all have the same result, you gotta make sure you have a good connection if the code is still present then you have to replace the sensor

[master_cat]

lol where exactly is this sensor lol

[evildky]

front of the drivers side head below the cam in towards the center of the engine, up and to the right of the thermostat housing

[master_cat]

IT wasnt hooked up sigh hooked it up no more code no change in the running of the car

[evildky]

it should have changed how the car runs substantially, the other codes still rpesent? running on all 6 cylinders?

[master_cat]

It runns and drives but has bad idle and no power sounds bogged down when u push gas u can unhook the mas and it dosent affect the running at idle this is making me sad

[evildky]

any codes? running on all 6? you didn't specifically answer

if unplugging the mas makes no difference in how the car runs it might well be a bad mas

plugs and wires? someitmes a weak sprak plug or plug wire can cause wierd issues

[master_cat]

Running on all cylinders has brand new ngk wires and ngk iridium plugs. It idles the same with the mass unhooked. It will die with the mas unhooked if u hit the gas tho i didnt know if maby the cat could cause this or maby the computer im geting tired of my car lol

[evildky]

I have a good hard look at the mas, I suspect the mas or the ecu

[master_cat]

how can i inspect them to see if they are bad is there a way to tell

[master_cat]

WEll think i know wat it is . Removed the computer had corosion and rust in the bottem corner it got wet so id say its fryed. Wat should i replace it with is there a better one to use

[Perrenial Badass]

http://xenonz31.com/ECUdifferences.html
Get a stock one that matches the injector and o2 sensor type and call it a day. There's a few options for aftermarket, but you will not see much/any benefit on an otherwise stock car.

If the ECU fried you have a leak, find it and fix it. Then pull up the carpet to make sure you treat any rust on the floor. That said, if the car ran at all IDK about it being a failed ECU, that's always seemed to me to be an all or nothing kind of failure. Could be wrong though. The only time it happened to me the ECU was on fire, so a little bit different circumstances.

[master_cat]

The bottem of the ecu was under water the bottem of it it had a white poweder and corosion on the board and the resistors along the outer edge that face the bottem its either this or the mass airflow if its not them i dont know

[master_cat]

ok car still inop can not afford brand new ecu and mass airflo found a 85 at the scrap yard will these work on my 86

[evildky]

the answer can be foudn in the link perrenial kindly posted

[master_cat]

ok replaced the ecu and the mass and car runs the same im going crazy

[evildky]

any codes at present?

[master_cat]

well did some more looking into my car problems car is running on 3 cylinders 2,6,4 are doing nothing but there is fire coming out of the cap lol car gets worse and worse

[evildky]

now we're getting somewhere, you have determined the whole divers side of the engine is not working, lets find out why

ohm the injectors, should be around 12-14 ohms
check the firing order fo the spark plugs, they are labled on the cap and I assume you know the cylinders or your report of 2,4 and 6 not working is suspect

plugs, and wires are other suspects

[master_cat]

all wires are in the right order i now suspecting somthing is killing the power to the right side injectors wat would cause that

[evildky]

you check the wiring? getting power? injectors good?

"right side" you said 2,4 and6, thats drivers side, generally referred to as left, right if you are looking at it from the front

you suspect fuel issue, are the plugs wet?