i have a 95 5 speed. when the engine is cold it surges and has no power. it kicks in and out of it untill it gets to normal temp. anyone have any ideas whats going on??

 

right off the top of my head, ummmmm SEARCH MAYBE??? cmon man, you've been a member long enough to know this. ill throw this out there,

1. fluid level check
2. tranny or clutch might be on its way out
3. top off if low

 

Hello,

In my 95, when it is cold, i'm getting a diferent kind of problem...

My '95 maxima VQ30, is making noisings (toc toc toc) on cold starts.... Looks like rod noise... after 10 seconds, everything ok....

I'm using 10w30 as the manual recommends... But I think this was not a good choice to the engine due our temperature in Brazil...
Where I live, some times, temperature reaches 50F.... and some times 70F.... (in the morning)....

Sorry use this topic, but Please, what type of oil should I use?
Is it a good a idea, change to 20w50?

Thanks,
Bruno

 

Don't know how you even think this is in any way tranny related


OP check for a intake leak around where the plenum meets the LIM, it sounds like you have worn out gaskets they tend to thin out after the years. The reason it gets better when it gets hot is because the gaskets expand after they get hot like any other metal.

 

Also check IAT sensor and ECT sensor.

 

In the USA we generally run 5W30 or 10W30. Sounds like your oil filter doesn't have a anti drain back valve. Try another brand filter because I think yours is emptying out.

 

goddamn, i musta been tired as $hit yesterday, sorry man. sounds like maybe a sensor or maf maybe??? maybe go to auto zone and get a scan see if any codes pop up.

 

You were on the tipsy side don't lie

 

i put my scan tool on it and it gave me a knock sensor code and o2 sensor 1 bank 2 code

 

Really take ya comment and shove it up ya a$$ no need for that when you dam well know you don't search

 

Good point!

 

Hmmm, might be bad/clogged cats! What code is it exactly for the O2 sensor? Also, how many miles on the cats, if originals how many miles on the car?

 

i changed the one after the y pipe with a magnaflow a few months ago. the other 2 im not sure when they were dont and the car just rolled 445,000 the other night on my way to work. i tested the 02 sensor and the sensor is good the headed part of it is bad i guess.

 

i sure as hell do man, i see repeated threads all the time and it annoys the $hit outta me. i was tired man, read entire post first.

 

Oh wow 445k miles!?

Ok so your throwing a heater circuit for your O2 sensor that shouldn't cause anything performance wise. It is the downstream sensor right? The heater circuit is basically just a resisitor you can simulate it if you want with a resistor I'm not sure what value though.

It may be your precats. If you are mechanically inclined remove them and gut them and see if that helps.

Also, did you check for leaks at the plenum. I think you can spray some hair spray around where the plenum meets the LIM and see if it revs up like crazy then you have a leak, but you have to test it while its cold just like when it has the problem.

 

455k im sory lol, yeah i have done that with brake clean while it was hot and cold. i know that cats are starting to get plugged up because when i stick my foot in it i get a bad rotten egg smell. but im going to fix the cat problem with a warpspeed y pipe this summer coming up

 

oh and if i just start it and let it warm up it will do it while its idling too. the rpms will drop a few hundred and it runs rough

 

Possibly completely unrelated (im like halfway out right now from my medicine), but I had a similar "surging in park when cold" problem 2 years ago and my IACV was on its last leg.

 

You can clean your throttle body and ivac. maybe your ivac has to adjusted.