Hello the rpm.s go up and down i pulled the code but do not have a book the code is 505 can you help

No maker car, or model car told or year. (or truck)
zero
just an engine floating in space
sorry the books are sold based on the VEHICLE and VIN code for engine.

Do you build engines off internet rumors./ <<<<<brave no?
off
Used on: Lexus IS, Toyota Altezza, Toyota Chaser, Toyota Cresta, Toyota Crown, Toyota Mark II, Toyota Soarer, Toyota Supra, Toyota Verossa
History, I bet they are NOT THE SAME.

1G-FE (1988 - 2005) - version of 1G-GEU with a different narrow 24 valve cylinder head, designed to replace 1G-EU. Power 135 hp at 5600 rpm, torque 176 Nm at 4400 rpm. Installed on: Toyota Mark 2 X90, Cresta X80/X90, Crown S140, Soarer Z20. Since 1996, there has been a restyling and power has grown to 140 hp at 5750 rpm, a torque of 185 Nm at 4400 rpm. Cars with this engine: Toyota Chaser X100, Mark 2 X100, Cresta X100, Crown S150.

if yes bingo this is a car and want facts
read them here, I must pay to read , real books, or like this.

https://eautorepair.net/Marketing/Default.asp

HD 5.9L (360) SMPI V8 "MAGNUM"
Horsepower: 245 @ 4000 RPM
Torque: 345 @ 3200


5.9L (359) HO I6 CUMMINS TURBO DIESEL
Horsepower: 245 @ 2700 RPM
Torque: 505 @ 1600 - 2700 RPM

There's this website www.reliable-store.com
They have books on ALL vehicles.
it covers wiring diagrams, electrical diagrams,
fuse diagram, torque specs, PCV, error codes, fault codes, service info, repair info, parts info, owner's/service/repair/parts/maintenance manuals etc everything totally..

I have 1987 toyota 4runner model and I keep servicing and when needed repair it on my own. worth it !!!

I would pull the codes from the computer first and foremost, but generally when dealing with fluctuating RPM, it's either bad vacuum, Eger valve, IAC, or TPS, It's a lot easier if you just pull the codes and it'll narrow down the field of possibilities for you.

TDC sensor bad or wire to it mangled.
http://honda-tech.com/tags.php?tag=p1362

505 is (bad idle)
http://honda-tech.com/tags.php?tag=p0505

TDC is big time bad, idle speeds are the last to work right
on any EFI engine... its a side show.

Hello,

Got a book to your vehicle? Sounds like a sensor or switch either on the engine or transmission. In your book look at any switch or sensor associated with the 1706 code. Usually, when a code is thrown the code is meant to narrow down possible problems. Sometimes in the code reader book there will be some given parts associated with a specific code. However, to me--this sounds like a transmission shift module or throttle rpm communication problem.

I hope this helps.

I don't have a book on that bro....just call your nissan dealer on monday and they'll tell you

Run a vacuum test. Start motor and try to rev a little. If the vacuum drops it could be a plugged cat or muffler, some type of exhaust restriction. Vacuum should pull steady at 15 to17 inches at idle. This is just one possibility.

Hello;
Have you looked at a Haynes or Chitons vehicle specific book? They usually have the wiring diagrams in the electrical section. If not the library often has the high end books with the diagrams you can trace or photocopy.
Hope this helps.
Thanks;
Rich
RPM Northwest