Last post on Nov 26, 2013 at 1:28 PM
You are in the Nissan Quest
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Nissan Quest, Auto Repair, Engine, Van
Apr 25, 2009 (10:27 am)
stumbled across in my reading another potential cause of the problem. The throttle position sensor that is sticking or acting up will cause the problems that we are encountering. Essentially if the sensor is not working correctly the engine computer does not know where the throttle position is and is continually trying to adjust causing a rough idle and finally a stall. This, i believe, also causes my problem of timing marks jumping all over the place since the computer is also trying to adjust timing based on an unknown throttle position. Problem should disappear during acceleration since sensor is no longer in play since it mainly adjusts air flow during idle. hopefully this is the solution. good luck!!
#156 of 164 Re: ah ha [hunter38]
Apr 25, 2009 (10:39 am)
thanks steve for setting me in the right direction on this one!
#157 of 164 Re: ah ha [hunter38]
by Stever@Edmunds HOST
Apr 25, 2009 (12:26 pm)
Nice intuitive leap you made from a throttle body plate to the TPS.
Keep us posted on how it works out!
Steve, visiting host
#158 of 164 Re: well here is what i have done... [hunter38]
Apr 30, 2009 (8:12 pm)
We had the exact same problem...very frustrating as where we are there are not "mechanics" that have the right equipment to work on Nissan's. But after 4 mechanic shops, 3 tows and all the things above replaced..finally we replaced the distributor and it is running fine. My question is the mechanic that fixed our van said that in two warehouses they had over 2000 of this particular distributor part for this particular van. He suggested keeping your receipt, there is probably a recall on the way...just a heads up.
Good luck, other than this problem..I love my Quest.
#159 of 164 Re: well here is what i have done... [msixkiller]
May 03, 2009 (6:03 pm)
finally got mine done....it was throttle postion sensor and mass air flow sensor in combination. i had just replace the MAF sensor last year and it was still under warrenty. saved me $160 bucks. took it in to have AC looked at (i live in vegas) and found out that it will cost me $1700. ouch. first real money i have put in the car in 9 years since purchasing. cant complain too much i guess. couple of other parts plus labor adds up pretty quick.
#160 of 164 No luck, so far
May 16, 2009 (9:28 am)
I've cleaned EGR valve, IAC valve, throttle chamber, MAF sensor, checked and cleaned distributor, checked voltages on throttle position sensor.
All those things have checked o.k. but the gremlin is still there. I am close to just giving up and let this van run its course.
Still no ECM warning light.
#161 of 164 Finally, I got mine done
May 18, 2009 (8:04 am)
Thanks to the Villager & Quest FAQ site (Google). Under subtopics look for "Low speed miss". Several people posted the same exact problem but somebody nailed it and posted the solution.
All I had to do was replace the ignition wires and problem solved. I had checked the resistance on each of those wires and they checked ok and looked fine to the naked eye, but somehow when they got hot it seems to be a different story. The van has been for service several times but I don't think anybody knows the intervals for changing the wires.
I'll be back from time to time and sooner if there are any changes.
#162 of 164 Over heated know Idle is all over the place
Feb 13, 2011 (6:23 pm)
I blew a by pass hose on my 2000 qwest and now my idle is everywhere. It almost feels like its missing. Any thoughts on this?
#163 of 164 98 Villager EGR Valve removal
Nov 26, 2013 (1:28 pm)
#164 of 164 98 Villager EGR Valve removal
Nov 26, 2013 (1:28 pm)
Hi can anyone tell me how to remove the exhaust manifold tube from the back of the EGR valve ? The space is so tight, I can only use a small wrench but cannot loose the big nut. I ready sprayed WD40 but no use. Thanks