91 Nissan Sentra 1.6 4speed manual IAC question-

The EGR control solenoid- any way to check that? I think it may be bad.

I just had the exact same symptoms on a 1997 Sentra. turned out to be a bad distributor stalk (or whatever the real name is).

Did plugs. Did wires. Did cap and innards. All worked fine for a few hundred miles then it started again until finally, I got stuck with no spark on the side of the road.

Felt like a timing belt blew, but there was plenty of compression.

Regards, Joe Agro, Jr. (800) 871-5022

I replaced the distributor already throwing parts at it and still have the same symptoms. Also the car will not hesitate at all until it is operating temperature. despite the erratic idle i have full power with no issues until the engine warms up. i was still thinking the EGR control assembly might be to blame but it acts the same whether the EGR valve is hooked up or bypassed, and the EGR valve tests fine under vacuum and is closed as it should be at idle. this is driving me crazy! Thanks for anyone out there with ANY ideas to try! without a check engine light being set, is there any benefit of a computer analysis? Does anyone even HAVE a machine to hook up to a 91 sentra? there is a non-obd connector under the dash...

CLIP

My problems only existed when the car was warm *until* it completely died... Then even re-starting when cold wasnot possible,but it died under full load driving (highway at 75 MPH both times) and when warmed both times.

Did you replace it all the way into the engine or just the top end? When I say the "disributor stalk" I'm not sure what exactly is included, but I envision them replacing mine all the way down to whatever gear inside the engine spun the mechanism that is the dstributor and timing, etc. not just the top end. Unfortunately, I had a mechanic do it so I don't know exactly what parts are involved but I do know it was a multi-hour job, not just spare parts.

For you, I hope it is just a small fix, but do not disregard the distributor issue if you didn'tdo a 100% top to bottom pull and replace either. Which for all I know, you actually did do.

Regards, Joe Agro, Jr. (800) 871-5022

I just had a complete failure and now I hope to be able to determine what was malfunctioning. The car started fine but then when i tried to give it throttle it bogged down as if it were losing power and then i got it to run again (roll started it) for about 1/4 mile with very light throttle. it was idling no problem.I parked, went into the grocery store for less than 5 minutes, came back out, car refused to start. it cranked over strong but i never heard it fire. about three times i heard a muffled kind of detonation like it was thinking about starting but it never did. so i'm thinking that the coil might be the culprit. or the fuel pump died even though it always tested fine. comments/suggestions? thanks! rw

...Exact same symptoms of my distributor "stalk" failure...

Had to pull and replace the entire thing from inside the engine to the wires. All done from the outside, but a serious little effort anyhow.

I hope your fix is easier to implement.

FINAL RESOLUTION- after the failure (and an illegal 1/4 mile rope tow home later) I had a no start to diagnose. I was HOPING that when i fixed it the hesitation would go away. IT WAS! The old Sentra is running like a sewing machine again w/ 224k miles on the clock. The problem- bad ignition coil. So if someone tells you the ignition coil works or it doesn't that IS usually true, but NOT this time- that damned coil had been going out for almost a year. I am SO glad to have it running right again. On to the next issue.... INSTRUMENT LIGHTS!