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92 legacy oddities- help from others
#1
Posted 08 November 2012 - 09:55 PM
1992 legacy auto fwd
will not start
belongs to a friend, said that it wouldnt start, hit it with starting fluid for a few weeks, and that worked, now that doesnt work
ive noticed the following-brand new coolant temp sensor
both fans on, all the time, running or not, cold or hot
iac valve doesnt look horrible, but.....
it has spark, getting fuel. compression is 125ish at all 4
i got it to start tonight- horrible shuddering idle, but all 4 firing, idle at 2k rpm, will restart fine after its warm. but cold start is a no go
maybe timing skipped a tooth?.....odd one
what thinks the land of soobies:D
#2
Posted 08 November 2012 - 11:36 PM
in fact thinking back, spraying starting fluid may have actually done the hot wire filament in the maf in for good. they can't take the solvents.
Edited by Ricearu, 08 November 2012 - 11:39 PM.
#3
Posted 08 November 2012 - 11:59 PM
ive owned 109 subarus, this ones weird for sure
1992 legacy auto fwd
will not start
belongs to a friend, said that it wouldnt start, hit it with starting fluid for a few weeks, and that worked, now that doesnt work
ive noticed the following-brand new coolant temp sensor
both fans on, all the time, running or not, cold or hot
iac valve doesnt look horrible, but.....
it has spark, getting fuel. compression is 125ish at all 4
i got it to start tonight- horrible shuddering idle, but all 4 firing, idle at 2k rpm, will restart fine after its warm. but cold start is a no go
maybe timing skipped a tooth?.....odd one
what thinks the land of soobies:D
i'd say your skipped tooth is a possibility - especially if it seems doggy when driven.
#4
Posted 09 November 2012 - 07:18 AM
#5
Posted 09 November 2012 - 09:14 AM
#6
Posted 09 November 2012 - 10:21 AM
Which temp sensor is new? The one wire or the two wire?
Checked the test mode plugs under the dash?
#7
Posted 09 November 2012 - 10:25 AM
i thought this also, i have a good one on hand, no changeMaybe a bad mass airflow sensor? just maybe. unplug it and see if it acts any different. I have seen a bad maf make a car run real funny.
in fact thinking back, spraying starting fluid may have actually done the hot wire filament in the maf in for good. they can't take the solvents.
#8
Posted 09 November 2012 - 10:27 AM
the two wire is new, no cel....but not light at all, bad bulb or no bulb i suspect;) will updateNo CEL?
Which temp sensor is new? The one wire or the two wire?
Checked the test mode plugs under the dash?
#9
Posted 09 November 2012 - 10:45 AM
#10
Posted 09 November 2012 - 10:53 AM
21
22
24
30
31
32
49
#11
Posted 09 November 2012 - 11:27 AM
11 Crank angle sensor or circuit
12 Starter switch or circuit
13 Cam position sensor or circuit (TDC sensor on Justy)
14 Fuel injector no. 1 (Legacy, Impreza, Justy, SVX); Fuel injector 1 and 2 (XT, Loyale, GL, DL)
15 Fuel injector no. 2 (Legacy, Impreza, Justy, SVX); Fuel injector 3 and 4 (Loyale, GL, DL); Fuel injector 5 and 6 (XT6)
16 Fuel injector no. 3 (Legacy, Impreza, Justy, SVX); Fuel injector 3 and 4 (XT)
17 Fuel injector no. 4 (Legacy, Impreza, SVX); Fuel injector 1 and 2 (XT6)
18 Fuel injector no. 5 (SVX)
19 Fuel injector no. 6 (SVX)
21 Coolant temperature sensor or circuit
22 Knock sensor or circuit (right side on SVX)
23 Air flow meter or circuit (exc. Justy); Pressure sensor (Justy)
24 Air control valve or circuit (exc. Justy); Idle speed control solenoid valve (Justy)
25 Fuel Injector 3 and 4 (XT6)
26 Air temperature sensor (Justy)
28 Knock sensor no. 2 (SVX, left side)
29 Crank angle sensor (SVX, no. 2)
31 Throttle position sensor or circuit
32 Oxygen sensor or circuit (no. 1, right side on SVX)
33 Vehicle speed sensor (VSS) or circuit
34 EGR solenoid valve
35 Canister purge solenoid or circuit
36 Air suction solenoid valve (Impreza); Igniter circuit (Justy)
37 Oxygen sensor (no. 2, left side , SVX)
38 Engine torque control (SVX)
41 Air/fuel adaptive control
42 Idle switch or circuit
43 Throttle switch (Justy)
44 Wastegate duty solenoid (turbo)
45 Pressure duty solenoid (turbo)/atmospheric pressure sensor circuit (non-turbo)
49 Airflow sensor
51 Neutral switch (manual transmission)/inhibitor switch (automatic transmission)
52 Parking brake switch (exc. Justy)/Clutch switch (Justy)
55 EGR temperature sensor
56 EGR system
61 Parking brake switch (Loyale)/Fuel tank pressure control solenoid valve (Impreza)
62 Fuel temperature sensor (Impreza)/Electric load signal (Justy)
63 Fuel tank pressure sensor (Impreza)/Blower fan switch (Justy)
65 Vacuum pressure sensor
your 30 is weird, at least, there's no 30 for any soob at the above site.
clear them out and see which ones come back immediately.
from troublecodes.net
Edited by 1 Lucky Texan, 09 November 2012 - 11:32 AM.
#12
Posted 09 November 2012 - 11:42 AM
#13
Posted 09 November 2012 - 11:42 AM
#14
Posted 09 November 2012 - 05:38 PM
If the ECU gets no signal from the crank sensor you get no spark. They typically fail intermittently only when warm. If it were bad I would expect the engine to not start at all.
#15
Posted 10 November 2012 - 12:40 PM
i removed the iac, thoroughly cleaned it with brakleen, sea-foamed it and the car, reset the ecu. problem solved. started in 3 cranks at 12deg this morning
#16
Posted 11 November 2012 - 05:40 PM
#17
Posted 11 November 2012 - 07:30 PM
#18
Posted 11 November 2012 - 08:16 PM
#19
Posted 12 November 2012 - 11:40 PM
Thing runs fine most of the time, just seems to stumble when loaded at lower rpm's after warmed up. If I punch it , it will burble through the stumble and pull just fine.
It's the damnedest thing, can't figure it out.
#20
Posted 13 November 2012 - 12:02 AM
Make sure all vacuum hoses are in good shape and the breather and PCV hoses are clear of obstruction and connected properly.
One other option is the timing belt. If it has jumped one tooth the car may still run fine cold but have issues when warm.
#21
Posted 13 November 2012 - 03:56 PM

#22
Posted 13 November 2012 - 04:19 PM
#23
Posted 13 November 2012 - 05:51 PM
It's a 96, so it is an MAF car, will jump on the pcv change. Have checked timing several times and is still dead nuts. Easy yo check since im coverless
Do you have a scanner that can read live data, or display freeze frame data?
#24
Posted 13 November 2012 - 07:44 PM
Just so I understand, what am I looking for?
#25
Posted 14 November 2012 - 02:08 AM
Fuel trims should be somewhere around 10% to -10%. (The reading will be positive or negative depending on if the ecu is adjusting towards rich or lean A/F ratio. Beyond 10% can mean the sensor is bad.
Are any other sensor readings out of spec? Coolant temp, MAP/baro pressure/vacuum, MAF flow rate, that sort of thing.
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