I bought my 97 HB automatic with 190,000 miles. It idled too fast when hot. I checked the tempature with an external gage and it was correct. I cleaned the throtle body and the idle went back to normal, for a while. Then I set the idle as per the service guide and it idled normally, for a while. Now it's back to around 1200 - 1500 and I'm at a loss as to what to try next. Any ideas out there? I do notice that sometimes when I start it while it's still hot it will idle normally.
I believe your problem is a "thermo element" (nissan pt# 16391-12G00) it's on the throttle body. When mine went out the idle stayed high. Replaced it and all is good...
The only thing I can find somewhat like that on my 97 is the EGR temperature sensor, nothing on the throttle body other than the postion sensor. Does this sound like what you replaced?
Hmmm, how to explain this.. you know where your TPS (throttle position sensor) is, the
thermo element is on the opposite side! should be a "U" shaped bracket holding it in, if your close to a stealership give them the part number and they should be able to bring
up a picture (see if they will print it out for you) I dont believe its very hard to change on a KA motor. Or see if they have the part in stock so you can see it!
Let us know what happens...
There doesn't seem to be any way to attach a picture to this and I don't have a picture host site, so here goes. I don't have any kind of U shaped bolt. On the front of my throttle body is the TPS/Closed Throttle Position Switch. On the left side is the IACV-AAC valve and the IACV-FICD solenoid. On the right side is the Mass Airflow Sensor. On the right rear is a plunger device that controls the fast idle cam and appears to be setting in the coolant that flows through the TB. Is this what I'm looking for? It's the only thing left!
You had it pegged right down to the part number. Local dealer wanted $104.87 + tax. Ordered it from Pinnacle Nissan (Scottsdale) online for $73.54 shipping included. If anyone can find genuine Nissan parts cheaper than them I would be interested in knowing where.
I have my 91 HB in the stealership (I like that phrase) for a shift prob and idle issue. Be interesting to see what they do...I'll get back to you.
As a follow-up...turns out the braintrust that replaced the throttle position sensor rung off the set screw making it impossible to secure the TPS and adjust it correctly. Now the shift points as well as the erratic idle and wierd shifting probs when warm are gone. Hate that I spent the $$$ at the stealership, but at least it's fixed. For those of you handy enough to take care of this kind of thing yourself, maybe make a note for your files.
Thanks for all the suggestions regarding this issue. Working on my next 188k miles now.
You had it pegged right down to the part number. Local dealer wanted $104.87 + tax. Ordered it from Pinnacle Nissan (Scottsdale) online for $73.54 shipping included. If anyone can find genuine Nissan parts cheaper than them I would be interested in knowing where.
Gee, I hope this fixes my idle.
I found my reciept (ABC Nissan) list was $83.23 and they sold it to me for $62.42
Linear Mode
