I have been battling a few things for the last few months. If anyone can relate, please share what you know.
History:
1995 Mustang GT Convertible Stick
100K+ miles
No mods
New Autolite Copper Plugs
4 year old MSD coil, wires, cap and rotor
2 year old K&N air filter
5 years ago when I got the car (family freebie) the car would occasionally die and restart automatically on the highway. Happened a few times usually when it was hot out. Changed out coil, wires, cap and rotor as mentioned above and was hoping to advance the timing a bit. Everything over 10 degrees was giving me a very light ping at full throttle. Since I never gun it anywhere, I set timing back to 10 and never had an issue. Car never shut down while driving again. Also, I ran 93 octane to mask the chance of pinging. Probably not the best thought but I didnt like the light ping. Higher octane kinda worked...
Car started running a little rough this summer especially when I was driving traffic (Houston). Noticed I was getting some pinging at high throttle, not WOT, just when passing people or goosing it to merge on the higway. I normally drive 30 milles a day with no traffic so the problem was not a daily issue. Moving on.
So, I have been nursing a leaking dying compressor for a year. Had to top off regularly during the summer. Compressor finally blew yaddy yadda. New A/C compressor and related parts installed 2 months ago. Wow, this is what A/C feels like??? When the compressor kicks in, its noticeable. Maybe not to my passenger but I can feel it. Problem? Not sure.
Car sat at airport for 5 days while I was on business. Driving home in and out of traffic on a really freakin hot September day, car dies on me on the highway just like 5 years ago. This time it doesnt start back up. As I pull over (not stopped yet) I get it started back up by cranking it. Get almost home and it dies again. Had to wait 5 minutes before it starts.
So then I get on StangNet and start searching. Best thing I found was distributor, in particular the PIP. So, I did this and made a little writeup:
http://www.stangnet.com/mustang-for...ll-pip-distributor-stator-pick-up-pickup.html
Went for a test drive and car ran great for a day. Im pretty sure the computer was recalibrating so my issues didnt come up till the next day.
So this happens:
YouTube - 1995 Mustang RPM issue
Watch at 15-18 second mark. RPMs flutter. You can really feel it jerk at 30mph and lower gears but all issues are at the 1800-2000 rpm mark.
Ran a can of seafoam through the intake vacuum line for fun and nothing changed. I even let the seafoam sit for 5 hours. I barely got any white smoke either.
Now im thinking, what did my mechanic do? Talked it over with him about electronics and what was touched and we found nothing damaged or much electrical near the A/C parts for that matter.
I started cleaning and swapping parts one at a time. Heres my list:
Checked air filter. Removed K&N and replaced with clean stock FRAM. No change.
MAF cleaned with q-tip. No dirt. No change.
IAT cleaned. No change.
IAC cleaned. No change.
Swapped IAC. No change. Old IAC back on.
Swapped TPS. No change. Old TPS back on.
Now Im clueless. Really thought this was throttle related because it only happend at constant 1800-2000 rpms in any gear.
Hmm. How bout the EGR? This caused some NOX issues on my old Bronco, lets take a look. Cleaned everything, not much carbon. No change.
Changed EGR sensor. No change. Old sensor back on.
Then I pulled off the vacuum leading to the sensor just for fun. The stumble from my video above is gone. Wierd.
Check vacuum lines and found that little solenoid under the passenger wheel well cover. This has to be my vacuum issue. Swapped it, reconnected EGR vacuum line and no luck. Put old solenoid back on.
Changed spark plugs. All were identical and had an enlarged gap (.060) with a grey white color. Something I read said it looked like plugs with timing issues.
So, thats the list. All the cheap parts I could think of and none worked. EGRs are not cheap so I havent changed it yet. I really didnt think disabling it would be an issue. The only way the car will run semi decent is with the EGR vac line removed and plugged. I get a CEL only with vac line plugged. No codes any other time during the entire process above.
Also, with EGR disabled, my gas mileage is down from 290 a tank to 170 (edit, more like 220) and the pinging is awful at partial throttle mainly in 2nd and 3rd gear. Something is WAY off here.
If you made it this far, thanks for reading. I am open to any ideas. Let me know...
Distributor maybe?
Computer problem sending wierd info to the EGR vac solenoid?
Fuel pump?
Fuel filter?
History:
1995 Mustang GT Convertible Stick
100K+ miles
No mods
New Autolite Copper Plugs
4 year old MSD coil, wires, cap and rotor
2 year old K&N air filter
5 years ago when I got the car (family freebie) the car would occasionally die and restart automatically on the highway. Happened a few times usually when it was hot out. Changed out coil, wires, cap and rotor as mentioned above and was hoping to advance the timing a bit. Everything over 10 degrees was giving me a very light ping at full throttle. Since I never gun it anywhere, I set timing back to 10 and never had an issue. Car never shut down while driving again. Also, I ran 93 octane to mask the chance of pinging. Probably not the best thought but I didnt like the light ping. Higher octane kinda worked...
Car started running a little rough this summer especially when I was driving traffic (Houston). Noticed I was getting some pinging at high throttle, not WOT, just when passing people or goosing it to merge on the higway. I normally drive 30 milles a day with no traffic so the problem was not a daily issue. Moving on.
So, I have been nursing a leaking dying compressor for a year. Had to top off regularly during the summer. Compressor finally blew yaddy yadda. New A/C compressor and related parts installed 2 months ago. Wow, this is what A/C feels like??? When the compressor kicks in, its noticeable. Maybe not to my passenger but I can feel it. Problem? Not sure.
Car sat at airport for 5 days while I was on business. Driving home in and out of traffic on a really freakin hot September day, car dies on me on the highway just like 5 years ago. This time it doesnt start back up. As I pull over (not stopped yet) I get it started back up by cranking it. Get almost home and it dies again. Had to wait 5 minutes before it starts.
So then I get on StangNet and start searching. Best thing I found was distributor, in particular the PIP. So, I did this and made a little writeup:
http://www.stangnet.com/mustang-for...ll-pip-distributor-stator-pick-up-pickup.html
Went for a test drive and car ran great for a day. Im pretty sure the computer was recalibrating so my issues didnt come up till the next day.
So this happens:
YouTube - 1995 Mustang RPM issue
Watch at 15-18 second mark. RPMs flutter. You can really feel it jerk at 30mph and lower gears but all issues are at the 1800-2000 rpm mark.
Ran a can of seafoam through the intake vacuum line for fun and nothing changed. I even let the seafoam sit for 5 hours. I barely got any white smoke either.
Now im thinking, what did my mechanic do? Talked it over with him about electronics and what was touched and we found nothing damaged or much electrical near the A/C parts for that matter.
I started cleaning and swapping parts one at a time. Heres my list:
Checked air filter. Removed K&N and replaced with clean stock FRAM. No change.
MAF cleaned with q-tip. No dirt. No change.
IAT cleaned. No change.
IAC cleaned. No change.
Swapped IAC. No change. Old IAC back on.
Swapped TPS. No change. Old TPS back on.
Now Im clueless. Really thought this was throttle related because it only happend at constant 1800-2000 rpms in any gear.
Hmm. How bout the EGR? This caused some NOX issues on my old Bronco, lets take a look. Cleaned everything, not much carbon. No change.
Changed EGR sensor. No change. Old sensor back on.
Then I pulled off the vacuum leading to the sensor just for fun. The stumble from my video above is gone. Wierd.
Check vacuum lines and found that little solenoid under the passenger wheel well cover. This has to be my vacuum issue. Swapped it, reconnected EGR vacuum line and no luck. Put old solenoid back on.
Changed spark plugs. All were identical and had an enlarged gap (.060) with a grey white color. Something I read said it looked like plugs with timing issues.
So, thats the list. All the cheap parts I could think of and none worked. EGRs are not cheap so I havent changed it yet. I really didnt think disabling it would be an issue. The only way the car will run semi decent is with the EGR vac line removed and plugged. I get a CEL only with vac line plugged. No codes any other time during the entire process above.
Also, with EGR disabled, my gas mileage is down from 290 a tank to 170 (edit, more like 220) and the pinging is awful at partial throttle mainly in 2nd and 3rd gear. Something is WAY off here.
If you made it this far, thanks for reading. I am open to any ideas. Let me know...
Distributor maybe?
Computer problem sending wierd info to the EGR vac solenoid?
Fuel pump?
Fuel filter?