Why won't my car start when it gets hot ?

Asked by Aug 05, 2016 at 08:04 PM about the 1987 Ford Mustang GT

Question type: Maintenance & Repair

I have a 1987 mustang gt running with a cobra ecu.
I also have 24lb injectors from a navigator. Early
model upper and lower explorer intake. Maf air
calibrated to 19 lb injectors.

2 Answers

25

It could have a vapor lock.

11,385

Whats the fuel pressure? ('93 Cobra? EEC) With the calibration 19lb and 24lb injectors MAF primarily controls dynamic throttle response using factory fuel map pulse width for 24 lb injectors. Wait just tune it right! $250 for tuning hardware from Aftermarket. $110 for the Software to tune it from EECAnalyzer. Roughly $460, and you will also be able to manipulate Fuel Tables, Timing Tables, Disable Emissions, Adjust Decel Fuel ShutOff, Displacement, Tune for best acceleration, etc..Ford did things a little different... Actually, you could call it the "Right Way" Ford Calibrated the stock EEC to read the output of the MAF meter used on that vehicle series. This is done with a setting called the MAF Transfer, which can be thought of as a way to translate MAF voltage output back into an air flow number (CFM or Kg/Hr). There are 2 settings in the EEC for the Injector size, called the Injector High Slope and Injector Low Slope. Basically, this setting tells the EEC how much fuel will flow from the Injector for each millisecond the Injector is open.

Your Answer

Add photo

Related Questions

  • Won't start after the it hot 7 answers

    So I have a mustang 1995 v6 and it'll start right up in the morning but after you driving it for a while and you and turn it off then try so start it back it won't turn over so just crank but won't...

    1995 Ford Mustang

    -

    Maintenance & Repair

  • wont start when hot 17 answers

    car tends to cut out when it gets hot, often stranding me till it cools down

    1993 Ford Mustang

    -

    Maintenance & Repair

  • Won't start hot after running 3 hours on highway 3 answers

    Yesterday upon getting to my off ramp, the car stalled at the bottom and would not restart. Had her towed home, starts and runs fine (only 15 seconds or so since timing cover was removed) and I am sus...

    1989 Ford Mustang LX

    -

    Maintenance & Repair

  • Car won't start at 1 answer

    Hey guys, this is my first time posting on a forum, so I hope this goes well. I drive a 2000 Mustang GT. Recently, my car won't start, Only sometimes it'll start up. I know it's not the ignition sw...

    2000 Ford Mustang GT Convertible

    -

    Maintenance & Repair

  • why truck won't start after it get hot maybe twenty minutes running 41 answers

    1990 f150 with 300 six. vehicle runs great, starts right away even after sitting up for three or four months. it' fuel injected. once you drive it for twenty, thirty minutes, it will not start. le...

    Ford F-150

    -

    Maintenance & Repair

Search Ford Mustang Questions

Ford Mustang Experts

#1 Tom Demyan
Tom Demyan
Reputation 4,060
#2 FordNut
FordNut
Reputation 1,230
#3 Bob Beaman
Bob Beaman
Reputation 1,100
View All

Related Models For Sale

Used Chevrolet Camaro
279 Great Deals out of 38,301 listings starting at $1,250
Used Dodge Charger
355 Great Deals out of 29,617 listings starting at $2,475
Used Chevrolet Corvette
179 Great Deals out of 20,807 listings starting at $3,995
Used Ford F-150
2,700 Great Deals out of 212,349 listings starting at $1,000
Used BMW 3 Series
1,369 Great Deals out of 37,821 listings starting at $1,500
Used Jeep Wrangler
392 Great Deals out of 19,082 listings starting at $3,000
Used Honda Civic
668 Great Deals out of 77,419 listings starting at $1,000
Used Honda Accord
814 Great Deals out of 81,613 listings starting at $899

Used Cars For Sale

2017 Ford Mustang GT For Sale
4 Great Deals out of 4,423 listings starting at $26,995
2016 Ford Mustang GT For Sale
460 listings starting at $24,983
2015 Ford Mustang GT For Sale
480 listings starting at $22,995
2014 Ford Mustang GT For Sale
4 Great Deals out of 492 listings starting at $14,877