Blinkyblink and no-start?!? Help!

Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.

SonicRiot

Handbanana!
Joined
Nov 27, 2003
Messages
1,252
Reaction score
1
Location
CT
Kinda baffled here, so I need a brainstorming committe. This has been a problem that has slowly gotten worse. I'd post in the electrical section, but I tend not to get too many replies there.


I took the car off the road 2 weeks ago becuase I thought the alternator was bad. The headlights were flickering, the idle was up and down, and I was absolutely dusted by a bone stock 2002 WRX AND a V6 Lincoln LS. The car wasn't accelerating well and felt like a dog. It sat for a few days.

I tried starting the car last week on a whim, and the car acted as if the battery was dead. I left it alone for another day without testing the battery. The next day, I went outside, tested the battery and it showed good surface charge, but it would not start. Now, a week later, it fires up in one shot without assistance and purrs like a kitten. I'm baffled.


Symptoms:
-Dim headlights, tend to flicker, but is at random times
-flickering HVAC LCD screen
-Flickering dash lights
-The water temp sensor gauge works when it wants to
-power loss
-The radio works every other cycling of the key

Known:
-The motors mount in front is torn and has been for a while
-The battery shows 12.5 volts surface charge. I have not load tested the battery. Will do soon.
-Occasinally the alternator will not put out anything higher than 13.0 Volts. When the car runs normally, it puts out 14.2-14.5 volts. I have yet to full field the alternator... it's too damn cold and two jobs, college, and EMT stuff keep me busy. Will do soon.
-The car puts out no codes and no CE while running.
-ignition wire to remote solenoid control was bypassed. There was a break in the harness, so I band-aided it. It was a year ago and I haven't really had other issues with it, but I suspect more failures in the harness are soon to surface.


The bizzare factor:
Randomly, the car will not start. I turn the ignition and the car clicks, like the battery is dead. When I turn on the interior lights and step on the brake pedal, the lights go very dim. Turn on the headlights and the lights are dim as could be. They get dimmer as I tap the brake pedal. This is all with the car OFF. Then, I pull the key out, say a few curse words, turn the key, and the car fires right up like nothing happened! It will drive normally for as long as I choose to drive. Then randomly, it does the same thing when I go to strart it later. Hot, cold, doesn't matter. Randomly before I took it off the road almost 2 weeks ago, the lights would flicker and act as if the alternator was shot. Now, I can't get it to do it again.

Also, I feel a power loss. The car is smooth to 70 MPH, but for some reason feels very sluggish. It does't even force my head back into the seat anymore on hard launches or downshifts. The butt-dyno is sad.

I realize some of this might be coincidental or unrelated to the big electrical issue I'm having, but the more info, the better.


Thanks for any and all help. I'm kinda frustrated, but I have a feeling I'm missing something obvious. Either that or preparing to brace myself for a short in the harness somewhere. But these are random... I can't see a pattern or cause and effect type of scenario.

SHO specialist team, UNITE!
 

projectSHO89

SHOless In St L
Joined
Nov 7, 2001
Messages
6,116
Reaction score
160
Location
St. Louis, MO
Bad battery. Bad battery connection. Bad battery cable. Bad alternator.

Pick one, it's your fault.

Rx: Connect a voltmeter across what should be a solid connection when the fault is present (dim headlights would be a good time). Look for voltage where there should be none. Check the battery voltage at the posts while under load. Look for low output (should be around 12.6).

Keep looking at it until you find either a low battery voltage (under load, surface charge doesn't count) or a voltage drop acrosss what should be a solid (no voltage drop) connection, such as a battery cable or connector.

The erratic EATC display is a common side effect of low supply voltage.

The temp guage and the radio are possibly different issues. Once you solve the major problem, you'll know for certain.

Steve
 

Mark in PDX

SHO Member
Joined
Sep 9, 2002
Messages
200
Reaction score
18
Location
Woodburn, Oregon
I have to agree with Steve, though I have found that the ignition switch screws up the internal accessories on my 89.. It can **** the lights and stuff if it isn't making good connection and you have to 'jiggle' it to get the accessories to work.. I found that while driving it, other stuff acts funny during the day... On later models, they'll act a little differently than my 89, so could be 2 issues.. 1 the ignition switch and 2 a ground fault in the battery circuit (have you pulled the terminals and cleaned them well?)
later
Mark
 

SonicRiot

Handbanana!
Joined
Nov 27, 2003
Messages
1,252
Reaction score
1
Location
CT
The connections are clean and everything -seems- normal, connection-wise. I have yet to find an excessive voltage drop or a short. I was thinking a combination of an old alternator, old battery, and the ignition. I have had troble with the ignition before, which is why I had to rewire the starter solenoid control wire to bypass the harness. I'm driving the car to work on monday to load test the battery and full field the alternator. That way, I can work in a garage with reliable equipment.

Thanks. Keep on shooting out ideas if they pass your minds. I'll post results if I find anything.
 

Mels

SHOVELHEAD
Joined
Jul 16, 2003
Messages
1,594
Reaction score
149
Location
Brookfield CT
Load Cell

Chris I have a load cell here at home.

I could come down today (Sunday) if you'd rather not drive it up. You will need to put a charger on this morning to ensure you have a full charge - regardless of whether we test it together today or you tomorrow at work. Otherwise the load cell will give an erroneous test result.

I'll PM you my number, LMK.
 

SonicRiot

Handbanana!
Joined
Nov 27, 2003
Messages
1,252
Reaction score
1
Location
CT
Cleaned the battery terminals... full o gunk, the battery and alternator check out fine. Remote solenoid was rusted on back and had nominally more resistance than the motorcraft one I had sitting around, but I swapped it anyway. Battery wires seem fine. Grounds appear ok. Control wire for solenoid is ok.

The dim lights dissapeared with the gunk on the terminals. The hunt for the no-start continues.

I'll check the ignition next.

Thanks
 

NA SHO kid

Got traction?
Joined
Jan 2, 2003
Messages
313
Reaction score
1
Location
North Attleboro, MA
I have the exact same problem right now with my 93 mtx. It started a while ago(august) and i replaced the battery terminals and all was well, up until last week. Today the car will not start at all. The dash lights dim and i get nothing. The only thing ive done over the past week with the car is put an oil change on her. So I think im gonna try to see if there is oil on the starter shorting it out.
 

projectSHO89

SHOless In St L
Joined
Nov 7, 2001
Messages
6,116
Reaction score
160
Location
St. Louis, MO
NA SHO kid said:
I have the exact same problem right now with my 93 mtx. It started a while ago(august) and i replaced the battery terminals and all was well, up until last week. Today the car will not start at all. The dash lights dim and i get nothing. The only thing ive done over the past week with the car is put an oil change on her. So I think im gonna try to see if there is oil on the starter shorting it out.


Check the ground cable where it attaches at the starter.

Moisture tends to accumlate inside the insulation jacket and rots the cable from the inside. Difficult to see visually unless the insulation has "bubbled."

See my previous post in this thread on how to locate the source of an excessive voltage loss.

Steve
 

SonicRiot

Handbanana!
Joined
Nov 27, 2003
Messages
1,252
Reaction score
1
Location
CT
I haven't had the no start problem ever since I replaced the solenoid and rewired the ignition control wire to it. No problems for now, any way...

I think I'm going to replace my battery cables as well. They look kinda bad upon inspection.



Does anyone have a '91 wiring harness they need to get rid of?
 

Forum statistics

Threads
107,093
Messages
1,181,338
Members
16,157
Latest member
poffffd

Members online

Back
Top