1997 f-150 4.6 hard start.

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May 8, 2007 | 02:44 PM

55 256

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1997 f-150 4.6 hard start.

I all I have a 97 f-150 4.6 and it won't start unless I let off the key. No codes turn up and I checked all the grounds. Anybody have an answer.

May 8, 2007 | 03:23 PM

ranger88a

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Test the battery, I've seen some crank and not have enough voltage to keep the pcm going.

May 9, 2007 | 08:25 AM

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The battery test good I replaced it when I checked all the grounds and put new terminals on too.

May 9, 2007 | 10:57 AM

ranger88a

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Check and see if you have spark when cranking. If not, check your fuses and ign. switch. R/lg wire at coils should have voltage at all times cranking and in run position.

Last edited by ranger88a; May 9, 2007 at 11:04 AM.

May 9, 2007 | 11:37 AM

BURNSTOUGHFORD

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From: Iowa

Unhook the battery for 20 min and then rehook it up... i had some hard starting issue when i changed my fuel brand and octane once... computer needs to reteach itself what fuel u are useing... worth a shot...

May 9, 2007 | 11:43 AM

Merculous

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From: White City, Sk ,Canada

Mine had a dirty ground from the tranny bellhousing to the frame rail. The negative wire from the battery heads down by the starter to the frame rail and then branches off to the bell-housing. This was all rusted and not making connection.

Sure helped my non-starting issues! I haven't had a cranking/non-start issue since.

May 9, 2007 | 02:31 PM

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I forgot to mention that if I cycle the ign. switch 2 or 3 times it takes off right away. Thats why I thought it could be a bad ground and not sending the right signal to the fuel pump.