[Subaru XT 1986 ea82T starts and goes too 3k rpm the drops to 0]

15 minutes ago, idosubaru said:

Those connectors are used for memory and clearing functions.  The test connectors should be disconnected for normal driving. 

Connecting one connector will flash the codes in memory.  Connecting the other connector will erase the ECU memory. 
Or maybe connecting both connectors does one of thsoe functions.  It's been awhile since i've done it. 

You should also be able to just disconnect the ECU entirely either the plugs to it or pull the fuse if it has one or disconnect the battery overnight. 

can only see 2 green connectors that can be paired, but will try to disconnect the battery over night.

[Subaru XT 1986 ea82T starts and goes too 3k rpm the drops to 0]

Thanks for the great advice!

The car is now running proper with 

did replace a bounch of vaccum lines distrubitor cap, wire and plugs. made new ground wire at some places 

now I still got codes, how do i remove the codes to see if they show up agian?

can only find the test connectors in the trunk

[Subaru XT 1986 ea82T starts and goes too 3k rpm the drops to 0]

The sock was clean, fuel comes to the motor, will replace the fuel pressure regulator this weekend 

Very greatfull for the tips and what to look for 

[Subaru XT 1986 ea82T starts and goes too 3k rpm the drops to 0]

tested with another fuel pump but gave the same result.

[Subaru XT 1986 ea82T starts and goes too 3k rpm the drops to 0]

if I would buy a new fuel pump any suggestions on where to buy? 

[Subaru XT 1986 ea82T starts and goes too 3k rpm the drops to 0]

but can't hear the fuel pump when the ignition is on, think i used to hear it, was kinda loud before when driven

[Subaru XT 1986 ea82T starts and goes too 3k rpm the drops to 0]

the car start and goes to 3k rpm at 30psi of fuel pressure when the rpm is getting lower it goes up abit then down to 30psi and stalls

[Subaru XT 1986 ea82T starts and goes too 3k rpm the drops to 0]

On 1/24/2023 at 4:06 AM, Steptoe's photos said:

It sounds like same as my 85 turbo when fuel pump failed to keep it up, so to speak. I t'd in a fuel pressure test gauge after the fuel filter. Done as a T in, not end of line or it won't reveal issues, I found.

I got the required 36 psi, while revving stationary on the spot, but when taped gauge to windscreen and drove off, pressure dived to 10 psi, spluttered and not died, but return to idle, pressure returned to 36. Repeated all procedures to check again, replaced pump with new after 

I have bought a fuel pressure test gage and hope it arives soon, will post an update after the test. 

[Subaru XT 1986 ea82T starts and goes too 3k rpm the drops to 0]

22 minutes ago, czny said:

Snake your hand over that antenna cable at top Left of pic & feel around on top of steering column for 2 relays - one round can & one squarish.

The round one is fuel pump relay & squarish one ignition relay.

If there, remove the black harness screws to get at little Phillips screw holding the relay bracket. If the relay rattles when you shake it one contact pair is broken.

If not there, someone with an XT shop manual needs to chime in. Only ones I have here are for GL/DL.

 

Thanks, will look at this tomorrow and post an update waht i found.

thanks again for the replys

[Subaru XT 1986 ea82T starts and goes too 3k rpm the drops to 0]

20 hours ago, czny said:

You'll have to pull down the kick panel above the pedal cluster & remove the ecm to get at it.

 

 

 

 

The ECM sits in the trunk on my 86

can the relays be behind the radio?

[Subaru XT 1986 ea82T starts and goes too 3k rpm the drops to 0]

19 hours ago, czny said:

Could be the 6 pin ignition relay which is above the ECM next to the steering column. There are 2 relays there held to a small bracket with a single screw.

The black Chinese replacements are junk & fail too quickly. Look for a brown Legacy ignition relay for 1990 to 1994 models.

I've had this happen to my 87 GL twice now, when I used the black Chinese relays they failed prematurely.  

You'll have to pull down the kick panel above the pedal cluster & remove the ecm to get at it.

https://www.rockauto.com/en/moreinfo.php?pk=3786111&cc=1269446&pt=3480&jsn=388

can't seem to find any relays next to the steering column maybe im blind or they are not there

 

 

 

 

[Subaru XT 1986 ea82T starts and goes too 3k rpm the drops to 0]

18 minutes ago, idosubaru said:

Does it go to 3k immediately and die without running more than 2 seconds, or does it do it once you hit the gas pedal?  Or randomly?

Will it stay running if you keep your foot on the gas before it "drops to 0"?

 

 

 

It goes immediatly to 3k stays om 3k for 2 sec then goes to 0 and dies, can't keep it alive long with the gas pedal 

Will go though your list and see if anything can do the trick 

[Subaru XT 1986 ea82T starts and goes too 3k rpm the drops to 0]

Thanks for the replay, will test this have a junk car that i can take parts from and will see if this solves it. 

[Subaru XT 1986 ea82T starts and goes too 3k rpm the drops to 0]

Hi i Have a XT 1986 that starts but goes too 3k rmp then drops to 0, ran fine a week erlier, been started and moved a couple of times between that time with no start issue or idle issue, was on a drive a few days ago and the coolant temp got high then it started to jurk on the way  and now it starts but goes too 3k then down to 0

things i have checked is

spark is ok

fuel is ok

groundwires is ok

maf seems ok have tryed another one same problem

tryed disconnected the 02 sensor same problem

tryed switching the cts sensor other, might be bad aswell

the ECU gives 1 longer blink then 2 short trublecode 12.

any ides what could be wrong or what else to try?

kind regards from sweden

[Front parking brake assambly '86 xt]

Okej, thank you for The info, Will post when i try it after assebly 

[Front parking brake assambly '86 xt]

How do i get it inside, and do it look somewhat right? 

[Front parking brake assambly '86 xt]

 

Hi, I need help to know how to put this together, have tried everything possible, but can not find any sensible picture what it should look like or what direction the lever should sit. Has anyone here done this before who can explain or have pictures from the assembly?