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Old 12-30-2004, 12:36 AM   #1 (permalink)
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Question Diagnostic Codes Found...HELP...'87 22RE

My engine has been running okay, except that the timing chain is going (which I am going to change soon), and that ignition parts need to be changed (wires, cap/rotor). It has been missing at idle a little bit and from looking at the plugs, #1 looks the worse....the rest look okay, but not normal brown like they should. Anyway, I checked the codes just to see if I had any. Came up with this:

Code 6--- RPM NE signal (crank case pulse) to ECU - Missing while engine cranking or NE value over 1000 rpm in spite of missing NE signal.

Code 11--- Switch Signal - neutral start switch ON (22RE) or IDL point in throttle position sensor is OFF during diagnostic check

Thats the information I got out of the Chilton manual that I have...I also took a look at this website: http://www.off-road.com/toyota/tech/codes/
It says:

Can anyone give me some info on these codes? What is the NE? I imagine that when I replace the ignition parts that code will go away ...maybe.

Another problem that I have is I can't get the electronic advance to shutoff by short circuiting the check connector (like I did to get the codes). I am looking at the chilton manual that I just picked up and there is another diagram that I haven't seen before...it is saying that there is plug close to the distributor? Whats the proper way to get the electronic advance disabled? I thought it was the same way to check the codes, but I don't know.
I would appreciate any help

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Old 12-30-2004, 08:11 AM   #2 (permalink)
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Your missing & code 6 is more than likely caused by defective spark plug wires only,one way to test is at night spray the spark plug wires with a bit or water using a spry bottle or a windex cleaner bottle while the engine is running and watch for sparks on the wires.I suggest that you replace them with Genuine OEM ones which are available through your local Toyota dealership or NGK,NipponDenso (now called Denso), or Denso aftermarket which are available through many of your local autoparts stores.I would avoid any other brands or grades even avoid those performance spark plug wires as your 22R-E is tuned to run at a precise temp and ignition time hence the legendary durability and high miles that can be achieved with the Toyota R series engines.

If for some reason your local auto parts store cannot get NGK,Nippondenso or Denso aftermarket spark plug wires then you can get them at these sites which have excellent prices:


and at these Toyota dealerships that do high volume sales and have the prices in the USA and probably the whole world:


On 1985-87 4-Runner/pickup code code 11=TPS
On 1988-95 4-Runner/pickup code 51=TPS

First clean throttle body if problem persists re-adjust TPS if problem still there then replace TPS but pull the ECU codes first to verify that code 11 is present telling you the TPS is bad and once you replace it recheck your engine timing.

To clean the throttle body remove the air intake hose and examine the intake and throttle body for excessive carbon build if found then buy a can of throttle body cleaner labeled "safe on oxygen sensors,TPS's and catalytic converters" and make sure your engine is fully warmed up prior to using as when the throttle body is hot it dissolves the carbon easily and quickly.The labels usually specify to park the vehicle at groung level (0 degrees,no inclination) and have the engine running but I disagree I instead park the vehicle on a hill facing down and shut the engine off and hold a rag below the lip of the throttle body and poor the stuff and use a tooth brush.

Normally you can re-adjust the TPS:


and not replace it but re-check you timing after you change it as it can retard your engine timing my as much as 10 degrees and cause your engine to overheat.This is the part # for the 85-87 22R-E:

TPS Toyota # 89452-20060

The part # stamped on my 85 4-Runner is Toyota # 89452-28010/30,ND # 198500-0100

At least one day before re-adjusting or replacing TPS spray both Philips screws with a deep penetrating lube several times:

1)PB Blaster
2)Liquid Wrench
3)Kroil Oil
4)Aero Kroil & Sili Kroil
5)Toyota Rust Penetrant or High Performance Penetrating lube
6)Rust Check

About half of the ECU codes stored on the first & second generation EFI Toyotas don't show a constant blinking check engine light therefore you must pull the ECU codes and auto tranny computer codes to see if a fault is registered.
To pull the ECU codes:

All 1980-1995 and including 1995 EFI equipped vehicle allow you to find engine and related faults by pulling the ECU (computer) codes without the need for a handheld OBDII diagnosis scanner,the sites listed below have the fault codes needed to pull the codes and the instructions on how to do it:


Pulling the ECU codes is the first thing I do to diagnosis a problem thereafter I reset the ECU to see if the same problems show up and if so I then take voltage measurements both with the engine running and not and compare with the factory service manual,I also close the ignition switch after a cold engine and also after a warm engine and compare them with the factory service manual.This technique will completely isolate your problem without having to do trial and error and it is the technique I use when repairing tv's,vcr's,home/car audio.

Any Public Library in your area would have the Factory service manual,Haynes,Chiltons,Mitchells,Bentley and Toyota repair books.

There is also free AutoZone service manuals at:


For scanned pages of factory service manuals for other engines:


2003 Toyota Tacoma Factory Service Manual:

FSM (factory service manual)can be acquired in several ways:

Toyota Material Distribution Center
750 West Victoria St
Rancho Dominguez/Compton,CA 90220-5538
Ph:1-800-622-2033 (outside CA)(M-F: 7-5 PST)
Ph:1-800-443-7656 (inside CA)
Ph:1-310-818-4630 (in or outside CA)
Speak to Beverly or Deloris

1)buy a used one off e-bay
2)some Toyota dealerships may give you one or sell it for $10-20 (used) as most Toyota dealerships don't repair many old Toyotas and no longer need the service manual
3)some public libraries sell their old books as they are not in demand any longer
4)some free buy & sell classified papers,websites and bulletin boards may have some used ones for sale
5)some junk yards may have one laying around
6)some Toyota specialty garages may have one laying around and no longer use it as the vehicle may be too old and those mechanics probably have so much experience that they could publish their own factory service manual with corrections and "real world repair tips"
7)if someone has the FSM maybe they could scan all of the pages and post it on a site for all of us to download or view.

Repairs tv's,vcr's,home/car audio out of my home
Dartmouth,Nova Scotia
1985 Toyota 4-Runner,22R-E,W56,RN60LV-MSEK,rusted rear step/towing chrome bumper with 242 000 KM

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Old 12-30-2004, 01:40 PM   #3 (permalink)
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Thanks for all that great info

Do these codes that I pulled have anything to do with me not able to disable the electronic advance by installing the jumper on the diagnostic plug?

Thanks again

EDIT: I just read the page on adjusting the TPS and found my answer:

Symptoms of a bad or mis-adjusted TPS include:
  • Varying idle speed
  • Hesitation while accelerating
  • Poor fuel economy
  • Inability to correctly set base ignition timing
    • I.e. you jumper the timing check connector and the idle and timing don't change

Last edited by 87_SR5; 12-30-2004 at 02:05 PM.
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