Hard starting when hot
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Senior User
Joined: Jun 2006
Posts: 122
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From: Kamloops BC
Hard starting when hot
I've got an 95 F150 302 5spd 4x4. Starts like a dream when cold. If I drive somewhere and try to start it again say 15 minutes after stopping it, It cranks for a long time before it catches. (15- 20 seconds). Once it starts again, it's fine. If I shut it down and start again within say 5 minutes, it usually starts right up.
I've tried switching tanks. They both give the two second whir when I turn the key on. I get no check engine warnings, so don't know what the problem is if I don't get any codes. Anyone got any suggestions?
This just started in the last few months.
I've tried switching tanks. They both give the two second whir when I turn the key on. I get no check engine warnings, so don't know what the problem is if I don't get any codes. Anyone got any suggestions?
This just started in the last few months.
Lead Driver
Joined: Aug 2006
Posts: 5,670
Likes: 13
From: Sand Lake, MI
Ignore this post, wrong thread.
Try turning the key to run and then jump it at the starter solenoid when it does it next time. If it starts right up I'd look at the spark control box.
The spark control box on the inner fender can cause a whole variety of problems/issues when starting the motor.
For instance It may not have fire in the start/crank position but has it in the run position catching the second the key is let off to the run position as the driver gives up.
Over heating while in use is just one of the problems those boxes suffered from.
If I remember right you go by the wires protective grommet color when replacing one, if the plastic grommet is blue, you'd need one with blue grommets. If white then white, brown then brown and so on. One with a different color will not work right.
Try turning the key to run and then jump it at the starter solenoid when it does it next time. If it starts right up I'd look at the spark control box.
The spark control box on the inner fender can cause a whole variety of problems/issues when starting the motor.
For instance It may not have fire in the start/crank position but has it in the run position catching the second the key is let off to the run position as the driver gives up.
Over heating while in use is just one of the problems those boxes suffered from.
If I remember right you go by the wires protective grommet color when replacing one, if the plastic grommet is blue, you'd need one with blue grommets. If white then white, brown then brown and so on. One with a different color will not work right.
Cargo Master
Joined: Jun 2002
Posts: 2,033
Likes: 32
From: Aurora,Colorado
My used 92 F150 with 5.0 have always required that the foot feed be depressed for about one inch when starting the engine hot. With the throttle partly open-it starts immediately.
I always thought of this as a theft control feature.Even if the truck is hot wired-it will not start hot without the throttle being slightly open.
I always thought of this as a theft control feature.Even if the truck is hot wired-it will not start hot without the throttle being slightly open.
Senior User
Joined: Jul 2008
Posts: 295
Likes: 0
From: Coatesville ,PA.
Check the above post from danr1 & phoneman91,see if they fix your hot start problem. If not check your ign.coil, I had an old Corvette that had this problem, Primary coil windings & Secondary windings going bad when hot....... My old Thunderbird had elec.module hot start problems. Hope it words out for you. But you did't get any codes??
1992 BLACK NITE 4X4 302 E4OD- 31x10.5x15's W/3.55's... Untill (I) R.I.P.
1988 BLACK Harley FXRS--Sold
1975 BLACK Thunderbird Blackbird -R.I.P.
2005 BLACK Ford 500-- Sold
Assorted colors
1970 El-camino--BIG JIM--SOLD
1976 F-150 STD.CAB ---R.I.P.
1969 Chevelle SS 396 --Sold--What was I thinking!!!
1969 Pontiac GTO 400 --------Ditto---------
1968 Plymouth GTX 440-- Good Riddens
1965 Corvette 327- Wish I Knew then what I know now !!!!!
1963 Impala convertible 283--Sold
1953 Chevy 6 cyl. 3 speed Floorboard Clutch & brake pedal. 1st. Set of wheel's, Built like a TANK.......Probably still out there somewhere.....??????
1992 BLACK NITE 4X4 302 E4OD- 31x10.5x15's W/3.55's... Untill (I) R.I.P.
1988 BLACK Harley FXRS--Sold
1975 BLACK Thunderbird Blackbird -R.I.P.
2005 BLACK Ford 500-- Sold
Assorted colors
1970 El-camino--BIG JIM--SOLD
1976 F-150 STD.CAB ---R.I.P.
1969 Chevelle SS 396 --Sold--What was I thinking!!!
1969 Pontiac GTO 400 --------Ditto---------
1968 Plymouth GTX 440-- Good Riddens
1965 Corvette 327- Wish I Knew then what I know now !!!!!
1963 Impala convertible 283--Sold
1953 Chevy 6 cyl. 3 speed Floorboard Clutch & brake pedal. 1st. Set of wheel's, Built like a TANK.......Probably still out there somewhere.....??????
Fleet Owner
Joined: Aug 2005
Posts: 23,667
Likes: 301
From: Easton,Ks
Sounds like a leaking injector or a bad FPR, if you hold it on the floor it might help it start faster.
Holding it on the floor turns off the injectors while cranking.
No vapor lock with a 95 EFI 5.0 system.
Holding it on the floor turns off the injectors while cranking.
No vapor lock with a 95 EFI 5.0 system.
