64.5 mustang engine dies while driving
05-02-2020, 05:49 PM
#1
Thread Starter
Join Date: May 2020
Location: TX
Posts: 7
64.5 mustang engine dies while driving
I have a 64.5 mustang with a 289 v8 4v that has just started dying while driving. It doesn't sputter. It will restart. Doesn't happen right away and sometimes it doesn't happen at all when I'm driving the car. I'm thinking something electrical. Any ideas?
05-03-2020, 08:34 AM
#3
Thread Starter
Join Date: May 2020
Location: TX
Posts: 7
Looks to be the stock ignition system. Jiggled the key in idle and driving. No impact.
Checked the ground and the coil wire. Ground was a little loose on the battery. Connector on the coil side of the coil wire looks like it may not be making as good of contact as it should. Adjusted that. Drove the car a few blocks and it does again, but started right up coasting in neutral.
I'll replace the coil wire and see if that solves it.
Checked the ground and the coil wire. Ground was a little loose on the battery. Connector on the coil side of the coil wire looks like it may not be making as good of contact as it should. Adjusted that. Drove the car a few blocks and it does again, but started right up coasting in neutral.
I'll replace the coil wire and see if that solves it.
05-04-2020, 08:00 AM
#5
Thread Starter
Join Date: May 2020
Location: TX
Posts: 7
Jiggling the shift lever doesn't affect it. Tried that yesterday and I changed out the coil yesterday as well. The coil definitely had issues as the car runs much better now, but still is dying. Actually more now. The generator light is coming on as well. I've checked electrical connections again, but all seem ok. Maybe a bad generator?
Generator light is on at idle and low RPMs.
Generator light is on at idle and low RPMs.
05-07-2020, 09:50 PM
#8
Moderator
Join Date: Dec 2005
Location: Hills of California
Posts: 5,208
I dont know... Those numbers dont really make a lot of sense.
A 13.6v charge off doesnt seem likley to me. Had the car been running and you shut it off and instantly checked voltage?
If it sits overnight and you test battery voltage it should read low 12s in most cases.
idle might be about 13.6
2k should be 14
But im not familiar with generators and what their peak output V should be.
13.6 would as far as I know indicate a charge but not with engine off
it shouldn't be lower with engine running either.
Ohhh
Maybe the voltage regulator took a crap and its over volting the **** out of everything say 18 volts+ its over charging the battery and you see the V drop when running at idle.
Check again at 2k rpm
A 13.6v charge off doesnt seem likley to me. Had the car been running and you shut it off and instantly checked voltage?
If it sits overnight and you test battery voltage it should read low 12s in most cases.
idle might be about 13.6
2k should be 14
But im not familiar with generators and what their peak output V should be.
13.6 would as far as I know indicate a charge but not with engine off
it shouldn't be lower with engine running either.
Ohhh
Maybe the voltage regulator took a crap and its over volting the **** out of everything say 18 volts+ its over charging the battery and you see the V drop when running at idle.
Check again at 2k rpm
