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Topic: Car won't start during errands. (Read 2140 times) previous topic - next topic

Car won't start during errands.

Reply #15
Quote from: jrad235;313563


Hypo - With everything running on a stock alt, 12 something is acceptable. And if it wasn't, I could hardly see this being only a "after driving" issue.

 
I am assuming the trips are rather short and  I was thinking with a "NEW" battery it might not be charging quite enough but not actually discharging  .
 I have seen a new battery sometimes  "come back" after sitting for  a few hours
  I just thought it might be worth looking at a  little closer .
Just in case
Fox-less at the moment

Car won't start during errands.

Reply #16
I would argue the starter is just beat...shortly after shutoff...the engine heatsoaks and a heat-soaked intake charge takes more effort to compress. I had this same issue with my '38 Buick and that's a 6-volt system so it throws more into the mix...wondering if the old-school system is just junk, etc. A lot of frustration but it was several bad connections that were REALLY limiting the current flow. Enough to spin it over when cold, but not enough for that extra kick needed to turn over a hot engine. Note Im saying *hot* not *warmed-up*. A just-warmed-up engine would still be easier to turn over than a heat-soaked engine.
 
So again my point is your starter/connections/whatever is lacking, is not lacking enough to not start the car easily in the best of conditions.
1987 20th Anniversary Cougar, 302 "5.0" GT-40 heads (F3ZE '93 Cobra) and TMoss Ported H.O. intake, H.O. camshaft
2.5" Duals, no cats, Flowmaster 40s, Richmond 3.73s w/ Trac-Lok, maxed out Baumann shift kit, 3000 RPM Dirty Dog non-lock TC
Aside from the Mustang crinkle headers, still looks like it's only 150 HP...
1988 Black XR7 Trick Flow top end, Tremec 3550
1988 Black XR7 Procharger P600B intercooled, Edelbrock Performer non-RPM heads, GT40 intake AOD, 13 PSI @5000 RPM. 93 octane

Car won't start during errands.

Reply #17
I agree.
Always clean and check all connections first, and the starter is probably bad  I was just throwing something else out there .:D
Fox-less at the moment

Car won't start during errands.

Reply #18
Quote from: ZondaC12;313591
.shortly after shutoff...the engine heatsoaks and a heat-soaked intake charge takes more effort to compress.

Can you elaborate a little on this?

I thought hot air was less dense than cold air.

Car won't start during errands.

Reply #19
I'll be sure to check the voltage next time it wont start, and feel the starter to see actually how hot it is. I would say any trip I take that is longer than say 5 minutes it'll happen. I've checked and rechecked all of the battery connections and the one of the block. That was my first though. The cables appear to be original to the car, the positive and negative. The negative is probably worse of the two, some of the metal lines in the coating are a little corroded, nothing major though. I only know this because I put a new terminal connector on it a few months back.
Hypo, the 12.xx volts is with everything on, the rear window defrost, blower on high, lights and the radio. If all isn't on its up around 13.8-14 ish volts.  So the alt and battery seem okay.

Car won't start during errands.

Reply #20
:rollin:
Quote from: softtouch;313619
Can you elaborate a little on this?

I thought hot air was less dense than cold air.


:rollin:  x2!

A stock starter is fine for starting,,especially in this case where its faulty when warm.

checking the voltage doesnt do squat,,, you either need to use a clamp on amp meter to monitor the amps drawn during crank.  I saw that voltage number he posted as well but my next step would be to test the load its drawing. 
I suppose you could just use a volt meter and observe the voltage during crank to see if the potential drops say.... below 9.
I also dug though a bunch of your older threads and could find one associated to this problem,, although there are many.

To controdict myself a little,, if the starter is getting hot, things expand like steel ect so the brushes might be getting in a bind within the starter,,therefore possibly a fauty starter.  Thats just a lot of "heat soak" to explain off though.

Car won't start during errands.

Reply #21
Quote from: jpc647;313625
. The cables appear to be original to the car, the positive and negative. The negative is probably worse of the two, some of the metal lines in the coating are a little corroded, nothing major though. I only know this because I put a new terminal connector on it a few months back.


 This sounds like a good place to focus  :D
 I'm still in agreement that the starter is probably just worn out though.
Fox-less at the moment

Car won't start during errands.

Reply #22
Is your timing at 10*?
Quote from: jcassity
I honestly dont think you could exceed the cost of a new car buy installing new *stock* parts everywhere in your coug our tbird. Its just plain impossible. You could revamp the entire drivetrain/engine/suspenstion and still come out ahead.
Hooligans! 
1988 Crown Vic wagon. 120K California car. Wifes grocery getter. (junked)
1987 Ford Thunderbird LX. 5.0. s.o., sn-95 t-5 and an f-150 clutch. Driven daily and going strong.
1986 cougar.
lilsammywasapunkrocker@yahoo.com