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Octane adjust service pin on a 1997 town car got service code says open p1390 where and what does it do

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It means octane adjust (oct adj) out of self- test range

Posted on Aug 22, 2010

  • Jimmie Anthony Jun 15, 2014

    check for vacume leak at intake manifold. check pcv vacume line at intake manifold for rotten rubber hose with a hole in it.


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Where is the octane adjusting bar DTC p1390

On drivers side wheel well under hood near really junction box and power steering fill reservoir. It in line on that harness. It's a small gray plastic piece, probably not there because of that code but u will see empty cavity

May 03, 2014 | 1996 Mercury Grand Marquis

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Hmmm... If like other cars, you would normally adjust the striker post on the B-pillar.
Unless the hinge pins are worn, in which case the door would drop, and need lifting as you closed it, to allow the lock to align. The pins are usually replacable.

Nov 09, 2013 | 1997 Lincoln Town Car

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Getting a p1390 code on my 97 plymoth breeze 2.0 liter

The timing belt has jump a tooth.Your timing belt needs to be replaced before it causes valve to piston damage.which could be fatal

Oct 23, 2012 | 1997 Plymouth Breeze

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My 1997 Mitsubishi Eclipse wont pass emissions because trouble code P1390. I dont know what this means? Ive researched it everyway I know? My check engine light wont come on at all? Help anyone? Thanks!

This is the direct definition of this code
Mitsubishi DTC P1390 - Timing Belt Skipped 1 Tooth or More.
Probable Causes,
-Timing belt improperly installed
-Camshaft position sensor improperly installed
-Camshaft position sensor connector improperly connected
-Crankshaft position sensor connector improperly connected
-Camshaft's relative position not relearned after one of the following have been serviced: Camshaft, Camshaft sprocket, timing belt tension-er, cylinder head, head gasket, crankshaft sprocket, crankshaft cylinder block or the PCM.

Sounds like something to do with the timing belt it self. You can go to any Autozone or Checker and ask for a code reader (they will let you use it for free) and it will show this code again. You can also reset the cars computer with the code reader to see if it comes back with the same code.

Nov 03, 2010 | 1997 Mitsubishi Eclipse

3 Answers

How do you change the door hinge pin? On 1997 lincoln town car?

Well cracklin joe half the hinge us welded to the door..Duh!

Jan 08, 2010 | 1997 Lincoln Town Car

1 Answer

1995 eagel talon engine code p1390

Octane Adjust Pin Out Of Self Test Range. This is a sensor fault.
I believe will run out after key cycle concludes.

Nov 28, 2009 | 1995 Eagle Talon

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What type of gas should i use in my 1997 dodge ram. 3.9L engine

Your owners manual should specify this, as well as the under hood sticker, and sometimes the gas fill has a label.

You want to use the LOWEST that you can, as lower octane is more explosive than higher... (reverse of what you thought...). Higher octane RESISTS detonation, by lower volitility.

Vehicles now days automatically adjust timing, EGR and other settings when detonation is detected, so probably you would notice nothing across several octane levels.

Lowest octane will deliver the best performance and mileage...

Oct 10, 2009 | 1997 Dodge Ram 1500 Club Cab

1 Answer

1997 2.0 y code engine mitsubishi eclipse

P1390 - Timing belt skipped 1(or more) tooth


(click for full size)

Jan 21, 2009 | 1997 Mitsubishi Eclipse

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