JapCarForum Car Manufacturers Lexus/Toyota IS200 / IS300 / SPORTCROSS / Altezza Engine & Transmission p0785 code :(

p0785 code :(

p0785 code :(

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is300_dino
Posting Freak
3,556
05-09-2020, 03:09 PM
#1
got a p0785 code on the way home, Shift/Timing Solenoid. anyone have any knowledge on how to fix? tried searching not found anything of help yet. :cursing:Confusedad:

jae 2010 best lexus category show and shine winner
jae 2010 ice outlaw award 2nd place
jae 2011 ice outlaw award 1st place
is300_dino
05-09-2020, 03:09 PM #1

got a p0785 code on the way home, Shift/Timing Solenoid. anyone have any knowledge on how to fix? tried searching not found anything of help yet. :cursing:Confusedad:


jae 2010 best lexus category show and shine winner
jae 2010 ice outlaw award 2nd place
jae 2011 ice outlaw award 1st place

Phil01
Posting Freak
2,004
05-09-2020, 03:15 PM
#2
How does the car drive like Dean? is the gear changes good or does some gears appear to slip

1990 Eunos Roadster in Mariner DU blue
Cobalt cat back, Decat pipe, 15in Red Rota GT3 alloys, Toyo tyres, Lowered on Coil overs, Red anti roll bars, 14degree timing mod, white dash kit, illuminated side marker lights,
Halo ring headlights, OEM windblocker, Bluetooth streaming HU, Blue leather handbrake and gear lever gaitor, Centre brake/tail light mod, Blue velour door cards, Polished cam cover, Polished front strut bar, 4xheadrest speakers, JDM floor mats, Suede semi dish steering wheel,
Phil01
05-09-2020, 03:15 PM #2

How does the car drive like Dean? is the gear changes good or does some gears appear to slip


1990 Eunos Roadster in Mariner DU blue
Cobalt cat back, Decat pipe, 15in Red Rota GT3 alloys, Toyo tyres, Lowered on Coil overs, Red anti roll bars, 14degree timing mod, white dash kit, illuminated side marker lights,
Halo ring headlights, OEM windblocker, Bluetooth streaming HU, Blue leather handbrake and gear lever gaitor, Centre brake/tail light mod, Blue velour door cards, Polished cam cover, Polished front strut bar, 4xheadrest speakers, JDM floor mats, Suede semi dish steering wheel,

paddywak
Senior Member
277
05-09-2020, 03:17 PM
#3
is300_dino got a p0785 code on the way home, Shift/Timing Solenoid. anyone have any knowledge on how to fix? tried searching not found anything of help yet. :cursing:Confusedad:

Dino there could be a few reasons but all relate autobox
Low g/box oil. Dirty box oil. Faulty solonoid valve. Or dirty loose connection
Hope that helps
Paddy
paddywak
05-09-2020, 03:17 PM #3

is300_dino got a p0785 code on the way home, Shift/Timing Solenoid. anyone have any knowledge on how to fix? tried searching not found anything of help yet. :cursing:Confusedad:

Dino there could be a few reasons but all relate autobox
Low g/box oil. Dirty box oil. Faulty solonoid valve. Or dirty loose connection
Hope that helps
Paddy

Phil01
Posting Freak
2,004
05-09-2020, 03:18 PM
#4
Im guessing a shift valve solenoid as it indicates an open circuit

1990 Eunos Roadster in Mariner DU blue
Cobalt cat back, Decat pipe, 15in Red Rota GT3 alloys, Toyo tyres, Lowered on Coil overs, Red anti roll bars, 14degree timing mod, white dash kit, illuminated side marker lights,
Halo ring headlights, OEM windblocker, Bluetooth streaming HU, Blue leather handbrake and gear lever gaitor, Centre brake/tail light mod, Blue velour door cards, Polished cam cover, Polished front strut bar, 4xheadrest speakers, JDM floor mats, Suede semi dish steering wheel,
Phil01
05-09-2020, 03:18 PM #4

Im guessing a shift valve solenoid as it indicates an open circuit


1990 Eunos Roadster in Mariner DU blue
Cobalt cat back, Decat pipe, 15in Red Rota GT3 alloys, Toyo tyres, Lowered on Coil overs, Red anti roll bars, 14degree timing mod, white dash kit, illuminated side marker lights,
Halo ring headlights, OEM windblocker, Bluetooth streaming HU, Blue leather handbrake and gear lever gaitor, Centre brake/tail light mod, Blue velour door cards, Polished cam cover, Polished front strut bar, 4xheadrest speakers, JDM floor mats, Suede semi dish steering wheel,

is300_dino
Posting Freak
3,556
05-09-2020, 03:26 PM
#5
this morning on the way to work felt a bit jumpy, and seemed ok on way home got about half way back and light came on reset whilst driving on the scan gauge and came back on almost instantly.
the oil is less than 500miles old (3 weeks) from the rebuild still running engine in, had a GB oil cooler fitted to. so possible leak or soleniods crapped.

jae 2010 best lexus category show and shine winner
jae 2010 ice outlaw award 2nd place
jae 2011 ice outlaw award 1st place
is300_dino
05-09-2020, 03:26 PM #5

this morning on the way to work felt a bit jumpy, and seemed ok on way home got about half way back and light came on reset whilst driving on the scan gauge and came back on almost instantly.
the oil is less than 500miles old (3 weeks) from the rebuild still running engine in, had a GB oil cooler fitted to. so possible leak or soleniods crapped.


jae 2010 best lexus category show and shine winner
jae 2010 ice outlaw award 2nd place
jae 2011 ice outlaw award 1st place

is300_dino
Posting Freak
3,556
05-09-2020, 03:28 PM
#6
anyone know where to get a replacement noid or price?

jae 2010 best lexus category show and shine winner
jae 2010 ice outlaw award 2nd place
jae 2011 ice outlaw award 1st place
is300_dino
05-09-2020, 03:28 PM #6

anyone know where to get a replacement noid or price?


jae 2010 best lexus category show and shine winner
jae 2010 ice outlaw award 2nd place
jae 2011 ice outlaw award 1st place

Phil01
Posting Freak
2,004
05-09-2020, 03:29 PM
#7
Let me do some research on this code tonight dean

1990 Eunos Roadster in Mariner DU blue
Cobalt cat back, Decat pipe, 15in Red Rota GT3 alloys, Toyo tyres, Lowered on Coil overs, Red anti roll bars, 14degree timing mod, white dash kit, illuminated side marker lights,
Halo ring headlights, OEM windblocker, Bluetooth streaming HU, Blue leather handbrake and gear lever gaitor, Centre brake/tail light mod, Blue velour door cards, Polished cam cover, Polished front strut bar, 4xheadrest speakers, JDM floor mats, Suede semi dish steering wheel,
Phil01
05-09-2020, 03:29 PM #7

Let me do some research on this code tonight dean


1990 Eunos Roadster in Mariner DU blue
Cobalt cat back, Decat pipe, 15in Red Rota GT3 alloys, Toyo tyres, Lowered on Coil overs, Red anti roll bars, 14degree timing mod, white dash kit, illuminated side marker lights,
Halo ring headlights, OEM windblocker, Bluetooth streaming HU, Blue leather handbrake and gear lever gaitor, Centre brake/tail light mod, Blue velour door cards, Polished cam cover, Polished front strut bar, 4xheadrest speakers, JDM floor mats, Suede semi dish steering wheel,

Phil01
Posting Freak
2,004
05-09-2020, 03:30 PM
#8
if it is the solenoid it will be internal attached to the valve body.
might just be a connector or wire as generally the solenoids are robust

1990 Eunos Roadster in Mariner DU blue
Cobalt cat back, Decat pipe, 15in Red Rota GT3 alloys, Toyo tyres, Lowered on Coil overs, Red anti roll bars, 14degree timing mod, white dash kit, illuminated side marker lights,
Halo ring headlights, OEM windblocker, Bluetooth streaming HU, Blue leather handbrake and gear lever gaitor, Centre brake/tail light mod, Blue velour door cards, Polished cam cover, Polished front strut bar, 4xheadrest speakers, JDM floor mats, Suede semi dish steering wheel,
Phil01
05-09-2020, 03:30 PM #8

if it is the solenoid it will be internal attached to the valve body.
might just be a connector or wire as generally the solenoids are robust


1990 Eunos Roadster in Mariner DU blue
Cobalt cat back, Decat pipe, 15in Red Rota GT3 alloys, Toyo tyres, Lowered on Coil overs, Red anti roll bars, 14degree timing mod, white dash kit, illuminated side marker lights,
Halo ring headlights, OEM windblocker, Bluetooth streaming HU, Blue leather handbrake and gear lever gaitor, Centre brake/tail light mod, Blue velour door cards, Polished cam cover, Polished front strut bar, 4xheadrest speakers, JDM floor mats, Suede semi dish steering wheel,

is300_dino
Posting Freak
3,556
05-09-2020, 03:43 PM
#9
suppose twould be a good time for the valve upgrade kit too, neeed more money Sad

jae 2010 best lexus category show and shine winner
jae 2010 ice outlaw award 2nd place
jae 2011 ice outlaw award 1st place
is300_dino
05-09-2020, 03:43 PM #9

suppose twould be a good time for the valve upgrade kit too, neeed more money Sad


jae 2010 best lexus category show and shine winner
jae 2010 ice outlaw award 2nd place
jae 2011 ice outlaw award 1st place

mattlaw
Senior Member
572
05-09-2020, 05:06 PM
#10
Have you checked the ATF fluid level? Start with the basics
mattlaw
05-09-2020, 05:06 PM #10

Have you checked the ATF fluid level? Start with the basics

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