Hello and sorry for the long message.
I've been here for a while as a non-member reading other people's posts and following suggestions relating to my '95 Subaru Legacy Wagon (Automatic AWD).
- Are very similar to other people having issues starting my car when hot or after being driven for long or short distance.
- Car works almost perfectly in the morning and at initial startup (no problems).
- Drive for 1 hour or so and then park to go inside to work with clients
- Finish up inside, then come back to leave and head home...car may start after 3 or 4 tries
- Car also dies after being driven for long distance locally in town or between communities in my areas. When this happens, I can usually pop the hood and wait having the car cool down for 30 or so mins to 1 hour and will crank right up allowing me to finish my drive home
As I've mentioned, I've already implemented many changes and updates to my Legacy including many provided by Flatuous Blather suggestions (Thanks bunches) and other peoples suggestions, but still no go and my Legacy still runs intermittent. What seemed to help for a while and then same old same old includes:
- New Rebuilt Gas Pump (recently swapped 6/23 with used Outback pump with a larger motor) Fixed over two years ago when initial problems occurred...no go and did not help...multiple diagnostics by my mechanic (testing voltage levels, gas pressure, and misc...)
- New Power Steering Pump - leaking badly, but not directly related to my problems besides fluid getting into Spark Plug Holes and needing cleanup on motor and underneath
- New Battery, Cables, and Connectors also years ago and recently, but even when new did not fix my problems or improve condition
- New Spark Plugs and Cables and Coil Pack also replaced
- Almost every sensor (Coolant Temp, O2, and recently both Crank Position and Camshaft Positions sensors) has been pulled and replaced with new after-market and bone yard pulls (trying to keep costs down years ago)
- Many many bolts/nuts/connectors that were rusted or corroded (wow I know I live in Florida, but not that close to the beach)
- Starter replacement (years ago), pulled and bench tested working at Advanced Auto last year, and recent rebuild (finding corrosion on solenoid contacts) replacing with new contacts and plunger parts suggested and still no go at this state
- Added additional Grounding Cable from Battery to Starter and replaced Positive Battery Terminal to remove older unit and possible problems
- Starter Relay Addition (thanks for the help) - thought this worked well and only lasted a few hours before same problems...sometimes my car gets lucky.
- Quick Test and Never Fail button/switch (thanks again Flatuous and many others) - added to Starter Relay above and helps most of the time, but not perfect and only provides an additional option when Keyed on starting fails.
Recent changes as of June 23, 2013, I swapped out from my 96 Legacy Outback U-Pull-It volunteer:
- Fuel Pump - much larger unit with short return line tubing into tank (no problems so far and much less noisy replacing my rebuilt unit swapped years ago)
- Cleaned/checked all Gas and Vacuum sender and return lines
- MAF Sensor and Idle Control Valve - swapped with used units that were cleaned and then reinstalled. Also noticed the MAF and ICV both working, but took a while for them to register and level out properly
- The ignitor - also used replacement...but so far so good!
- Legacy works and runs MUCH Much better in the winter time...Summers in Florida are miserable without A/C (thank God that is still working)
- What has not been replaced is the Ignition Switch and possible Neutral/Part Position Sensor, but if this was my problem...the Never Fail Button should resolve these issues
- Others have mentioned Clogged Catalytic Converters causing similar problems...but checking air pressure shows exhaust volumes as normal and similar to other vehicles
- Update - also forgot to mention on my previous post...NO Codes being reported...nothing, Nada, and suspect the 95 Legacy simply doesn't report very much
- Also of note, people have referenced if I tried spraying "small amount of starter fluid into the air intake" and I did this previously, but it only had minor effect, car would not start, and continue to run as normal. (referencing my igniter issues)
My Legacy is running much better and I took it for a test drive 30 mins or so to warm things up and plan to wait a hour and test again when the problems usually occur with engine getting hot and then sitting for a hour or two.
Update (possibly final update) - looks like one of the options above has finally solved my problem! I suspect my problem was finally either Fuel Pump or Ignitor related, but I'm not going to switch either now they are working just to test my theory.
In the end, I went through a bunch of different suggestions, Fuel Sender issues, Clogged/Leaking Fuel/Vacuum Lines, Relays, Sensors, with the final changes listed above. As noted, I got he car hot this afternoon and let it sit as usual for one or two hours as when the issues usually occur. Car cranked and turned over starting without hesitation and on
the first try, which never happened before after driving and then sitting for a couple of hours.
I'll know more in the coming days when I drive and test things out on a full day of driving in town and will update if I notice anything. I'd also like to hear form everyone on what you think my final problems were???
Thank You and appreciate all the feedback and patience with my efforts and questions! Sorli...
Edited by Legacy777, 27 June 2013 - 09:06 AM.