okay so i have the vortech blower and all and i just got it back becasue the seals went bad so after i got it back i went to the car wash and washed the motor and car like i alwasy do and it didnt' start so i got it started took it to nissan and they replaced the MAF so now when i try to start it it bogs and sometimes dies out then starts and idels okay then when i hit the gas it just stumbles and i can't rev at all so i took EVERYTHING out coils plugs MAF and cleaned then and its still doing it is there anyone that can give me anything to work from or where to start and yes this all started after i washed the motor so could someone please please please help me out if you need to you can also AIM me at DarkMysticKnightat aol.com

 

Hmm....I know others may disagree, but washing your engine with a ton of water is not a good idea.

Let the engine bay dry out in the sun, and try again. If the engine is running this poorly, surely there will be a check engine light. Have you scanned for codes?

 

You know what might help?







Punctuation.

 

^ +1 seriously

 

I one time washed my MR-2 engine like that and ruined my knock sensor and the car went into a safe mode. Do what Sharif says if you have an engine light on. If you can get some compressed air try blowing everything out. Maybe use a hair dryer after that.

 

well it was last monday that i washed it and let it sit for 3 days after that and sometimes it runs fine then other times it runs like **** and no im not getting a check engine light but i have an actron2 scanner and sometimes I will get a multi cylnder mis fire but i clear it and it still runs like crap so IDK what the hell to do any other help

 

let it idle for awhile with the hood shut. it will heat everything up and hopefully dry it out. fyi- i only wash my engine bay with the engine running. that way if you get something wet and it doesn't like it, you know exactly what you were spraying. and just use a regular hose to do it, not pressure washer or high pressure hose.

 

i did it was last week like i said sometime it runs sometimes it doesn't i drove it like 200 miles and had no problems and then its starts out of no where im leaning towards faulty coils or o2 sensers anymore help someone has to have had this problem befor please anyone else

 

Moisture causing a signal/instrument breakdown..Let it bake in the Sun..Hood open..

 

I know this will sound obvious but check all sensors of course.

Also check your grounds. VQ has teeny ground wires (and several of them) and if they all don't have a solid clean connection you can get wierd stuff going on. True I would to expect some wierd check engine light codes but ya never know.

T

 

i did i checked EVERYTHING like i said sometimes its starts up fine and runs fine then if you let it sit it won't start at all so I have no idea and sometimes i get a multi cylnder misfire so could i have maybe shorted something with the coils ??????

 

First, dude, please learn to use commas, periods, etc. We aren't trying to be dicks about it but it makes your posts seriously irritating to read. With that said:

Were you getting the multi-cylinder misfire code before this happened? I know that code and FI sometimes go hand and hand with FI on the Z, but if it only started when your problem started then you might be on to something there. Second, since the problem originated after you washed the engine you can bet it has something to do with water, and/or the force of the water pressure knocking something loose. Never hose your engine with pressurized water. I will assume it was pressurized since I dont know of any do it yourself carwashes anymore that aren't.

If you took the car to Nissan already, and they changed the MAF - but it didn't help - why didn't you take the car back to them?

 

i did take the car back to them and i think i might have fouled the plugs when the MAF went so im hoping thats what it is im gonna change them tomorrow

 

any update?

 

nothing yet i have to wait till tomorrow to get plugs i live in PA and everythign closes at either 8 or 9 so I will try and let you guys know ASAP

 

okay so i changed the plugs and now it runs fine just to let ya all know and thanks for the help