Hey guys,
I have a 94 Maxima and I'm having a lot of stalling issues. I have replaced the MAF, the knock sensor, all fluids, radiator, alternator, and battery. I've read a lot of other posts on this topic, but none seemed to really fit.. It only stalls out while I'm running low RPMs (presumably, my tach is out), or when I'm coming to a stop. Fixing the knock sensor helped a lot of the issues, but hasn't solved it. A lot of the time it will try to stall out when accelerating after sitting at a light, or in traffic. I read that it could be a vacuum seal, but before I start fixing other things I thought I'd get some advice. This is my first Nissan so I'm not as knowledgeable as I'd like to be, but any advice would rock!

 

do you hear any hissing sounds from the engine bay? That could indicate a vacuum leak.

also which engine do you have?

vg:


ve:

 

also if it's a VE (meaning it's an SE) is your car a manual? Or is it an automatic stalling in-gear?

 

It's an Automatic SE, and yes, there's slight hissing but nothing that I could put my finger on. The only code it's thrown has been for the knock sensor, which I replaced. I've put a bunch of money and time in to fixing this car and at this point I'm just trying to figure out what the smartest next move will be.

 

I'm not too familiar with the actual layout of a VE's vac system.... but there should be 3 or 4 or 5 small rubber hoses plugged in at various places on the intake plenum and near the throttle body.... start tracing those and see if you can find any that have dry-rotted or have splits/breaks on them. There is one going to the water valve on the firewall where the heater hoses hook up, sometimes that hose (which reduces in diameter thru a coupler) has issues.

 

If you haven't already done so, inspect your ignition coils. A lot of the time, a faulty ignition coil can be one of the many culprits in stalling issues.