Hesitation/Stalling on Acceleration When Cold
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Joined: Dec 2021
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From: Las Vegas
Hesitation/Stalling on Acceleration When Cold
Hi all! I have a 1990 Ford F-250 with the 5.8, 351w that has a bit of a strange issue. When the engine is cold (not at operating temp) anything more than light acceleration when taking off from a stop, the truck will buck or hesitate, and even stall. Either after warming up to operating temp, or restarting after a stall, the truck runs just fine and has no issues with hesitation or stalling at all, no matter how much gas input you give it.
I was wondering if anyone has experienced this issue, or has any ideas on solving this issue. I don't think it's a fuel problem at this point, I've replaced pumps, redone lines, and rebuilt injectors, which all injectors were good when testing. I also have a new fuel pressure regulator on the fuel rail, so unless it's somehow faulty from brand new I don't think it's an issue.
I'm leaning more towards a spark or sensor issue, but if anybody has any ideas please let me know. Any ideas at this point are more than helpful to me, cause when it doesn't want to stall this truck is an absolute animal, but it's kinda frustrating to drive until it warms up, haha. Thank you for reading through this!
I was wondering if anyone has experienced this issue, or has any ideas on solving this issue. I don't think it's a fuel problem at this point, I've replaced pumps, redone lines, and rebuilt injectors, which all injectors were good when testing. I also have a new fuel pressure regulator on the fuel rail, so unless it's somehow faulty from brand new I don't think it's an issue.
I'm leaning more towards a spark or sensor issue, but if anybody has any ideas please let me know. Any ideas at this point are more than helpful to me, cause when it doesn't want to stall this truck is an absolute animal, but it's kinda frustrating to drive until it warms up, haha. Thank you for reading through this!
Fleet Owner
Joined: Oct 2005
Posts: 20,786
Likes: 1,751
From: Kentucky
New parts do not necessarily mean good parts these days. Rent a fuel pressure tester to check the pressure when the engine is cold and again when warm. Check it at idle as well as under load. Sometimes you have to tape the gauge to the windshield so you can carefully drive around the block to test the load pressure.
Next question is how old are the spark plugs, plug wires and cap/rotor? Never under estimate how aged/worn ignition components behave in varying weather and load scenarios.
Now is a good time to invest in a code reader. Best tool you can add to your tool box. Highly suggest the Innova 3145.
Next question is how old are the spark plugs, plug wires and cap/rotor? Never under estimate how aged/worn ignition components behave in varying weather and load scenarios.
Now is a good time to invest in a code reader. Best tool you can add to your tool box. Highly suggest the Innova 3145.
2nd Gear
Joined: Jul 2022
Posts: 2
Likes: 0
From: Southern California
Hi all! I have a 1990 Ford F-250 with the 5.8, 351w that has a bit of a strange issue. When the engine is cold (not at operating temp) anything more than light acceleration when taking off from a stop, the truck will buck or hesitate, and even stall. Either after warming up to operating temp, or restarting after a stall, the truck runs just fine and has no issues with hesitation or stalling at all, no matter how much gas input you give it.
I was wondering if anyone has experienced this issue, or has any ideas on solving this issue. I don't think it's a fuel problem at this point, I've replaced pumps, redone lines, and rebuilt injectors, which all injectors were good when testing. I also have a new fuel pressure regulator on the fuel rail, so unless it's somehow faulty from brand new I don't think it's an issue.
I'm leaning more towards a spark or sensor issue, but if anybody has any ideas please let me know. Any ideas at this point are more than helpful to me, cause when it doesn't want to stall this truck is an absolute animal, but it's kinda frustrating to drive until it warms up, haha. Thank you for reading through this!
I was wondering if anyone has experienced this issue, or has any ideas on solving this issue. I don't think it's a fuel problem at this point, I've replaced pumps, redone lines, and rebuilt injectors, which all injectors were good when testing. I also have a new fuel pressure regulator on the fuel rail, so unless it's somehow faulty from brand new I don't think it's an issue.
I'm leaning more towards a spark or sensor issue, but if anybody has any ideas please let me know. Any ideas at this point are more than helpful to me, cause when it doesn't want to stall this truck is an absolute animal, but it's kinda frustrating to drive until it warms up, haha. Thank you for reading through this!
Thanks ahead,
Lead Driver
Joined: Jan 2019
Posts: 5,076
Likes: 865
From: N.W. Alabama
Hello, I'm new to the forum, but experiencing that exact same issue with my 1989 F250 with the same enginer, 5.8L-351cid. I have to allow it to warm up completely and then there is no issue, but while cold, and after about 3 to 5 minutes, it will stall on acceleration. Allow it to idle and warm, no sweat. but that 3-5 min in enough to get me to a bad place in the road, i.e. at a traffic light etc. So, I've learned to let it warm up before I leave the house. Meanwhile I've ordered a Innova 3145 Code Reader. Did you ever get your issue resolved? What was it?
Thanks ahead,
Thanks ahead,
New parts do not necessarily mean good parts these days. Rent a fuel pressure tester to check the pressure when the engine is cold and again when warm. Check it at idle as well as under load. Sometimes you have to tape the gauge to the windshield so you can carefully drive around the block to test the load pressure.
Next question is how old are the spark plugs, plug wires and cap/rotor? Never under estimate how aged/worn ignition components behave in varying weather and load scenarios.
Now is a good time to invest in a code reader. Best tool you can add to your tool box. Highly suggest the Innova 3145.
Next question is how old are the spark plugs, plug wires and cap/rotor? Never under estimate how aged/worn ignition components behave in varying weather and load scenarios.
Now is a good time to invest in a code reader. Best tool you can add to your tool box. Highly suggest the Innova 3145.
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