1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

89 f250 302 efi idles but wont drive

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  #1  
Old 09-05-2020 | 10:07 PM
Austin Jacobson's Avatar
Austin Jacobson
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89 f250 302 efi idles but wont drive

Update: I changed the fuel pressure regulator just for the hell of it my truck now runs and drives in reverse and first but if i shift to second it loses all power the rpms drop way down it wont rev up but is still running if I push in the clutch it picks up rpms and idles high

For the life of me I cant find out what my problem is my truck will fire up and idle at about 1200 to 1550 rpms and then after a few minutes will drop to 800 and if i get in and put in first gear and try to drive as soon as it gets over 1500 rpms it stalls the engine and drops rpms to almost 0 and dies if I dont push the clutch back in but in neutral it will rev up no problem I have new injectors new spark plugs new gas tank fuel pumps and filters on top of all of this I put in a new starter solenoid and my start cranks even with the key off and in my pocket if I tap the solenoid it will stop for a bit then start cranking the starter again sorry for the lack of punctuation and run-on sentence thank you for any information you can provide
 

Last edited by Austin Jacobson; 09-06-2020 at 09:00 PM. Reason: Update information
  #2  
Old 09-06-2020 | 08:07 AM
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How old is the gas in your tanks?
 
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Old 09-06-2020 | 09:38 AM
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Conanski
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Check fuel pressure.
 
  #4  
Old 09-06-2020 | 09:44 AM
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Austin Jacobson
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Originally Posted by jas88
How old is the gas in your tanks?
I just put it in a few days ago after I got it from the gas station
 
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