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Ford F-Series Gasoline Engine Problems

99 messages,  Last post on Aug 23, 2008 at 6:12 AM

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What is this discussion about? Ford F-150, Ford F-250, Ford F-350, Engine, Truck

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#90 of 99 weird fan noise by melikeyford May 08, 2008 (8:19 pm)
Hello, I have a 94 f-250 with the 5.8 and I noticed the other day that I had a lot of fan noise and loss of power so I replaced the fan clutch which was bad. I'm still having the same problem though. I know it needs some new plugs and probaly new wires and rotor but I don;t understand the whole fan thing. The oil pressure has always been low on the truck but it has always ran great and had no knocks or ticks. Any advice?
#91 of 99 91, 4.9L F-150 Exhaust Manifold by mike9408 Jun 01, 2008 (8:03 am)
Can anyone tell me why Ford designed the exhaust manifold for the 4.9L the way they did? I can see no reason for it other than possibly the installation of a turbo or something. I would truly like to know so if you can answer the question, I will be watching out for it and will appreciate it. Thankyou, Mike9408
#92 of 99 1987 F150 4x4 4.9l 4spd man by trobertc Jun 03, 2008 (12:20 pm)
I have a 1987 Ford F150 (4.9 300ci FI 4x4. 4 speed manual) I have a problem when it warms up it starts choking and stalling.. I replaced the fuel filter because I thought it had some trash in the tank but It still stalls when it gets warm. I am sure I have enough gas but I am lost. Could it be the Rotor cap and button?. I don't think it is the catalytic convert. for it doesn't glow when hot. Cn any one help me? Replies to this message: mike9408 (Jun 03, 2008 12:41 pm) trobertc (Jun 03, 2008 12:44 pm) trobertc (Jun 03, 2008 1:15 pm) and 1 more...
#93 of 99 Re: 1987 F150 4x4 4.9l 4spd man [trobertc] by mike9408 Jun 03, 2008 (12:41 pm)
Replying to: trobertc (Jun 03, 2008 12:20 pm) I had this problem once, found it to be the coil. When it (engine)came up to operating temprature apparently the coil would expand enough to open a circut inside and stop the engine till it cooled enough to make contact again and the engine would then run. Mike9408 Replies to this message: trobertc (Jun 03, 2008 12:44 pm) trobertc (Jun 03, 2008 1:15 pm) mike9408 (Jun 03, 2008 5:24 pm)
#94 of 99 Re: 1987 F150 4x4 4.9l 4spd man [mike9408] by trobertc Jun 03, 2008 (12:44 pm)
Replying to: mike9408 (Jun 03, 2008 12:41 pm) Thanks mike I will try that, I am up to anything right now.. its driving me crazy. Replies to this message: trobertc (Jun 03, 2008 1:15 pm) mike9408 (Jun 03, 2008 5:24 pm)
#95 of 99 Re: 1987 F150 4x4 4.9l 4spd man [trobertc] by trobertc Jun 03, 2008 (1:15 pm)
Replying to: trobertc (Jun 03, 2008 12:44 pm) mike do you think that the coil wire could be bad enough that it might be shorting when it it gets hot? Replies to this message: mike9408 (Jun 03, 2008 5:24 pm)
#96 of 99 Re: 1987 F150 4x4 4.9l 4spd man [trobertc] by mike9408 Jun 03, 2008 (5:24 pm)
Replying to: trobertc (Jun 03, 2008 1:15 pm) Yes it is possible. I would check everything that has to do with the coil and the Dist. best to check when it has failed you. (died ya knnow?)
#97 of 99 F-250 Engine shaking like crazy by joe2705 Jun 11, 2008 (7:25 pm)
#98 of 99 F-250 Engine shaking like crazy by joe2705 Jun 11, 2008 (7:25 pm)
got a 91' F-250 2WD with a 5.8l EFI on dual fuel(Gas&Propane)was running over 1 year on propane.had to change midship fueltank filled up with gas and fired up,the engine is shaking like crazy.changed fuelfilter,plugs,wires ,cap and rotor,checked fuelpressure(is according to specs.)still shacking like crazy can't drive on gas runs good on propane. would appreciate any help
#99 of 99 '97 f150 no power under 3000rpm by balsar Aug 23, 2008 (6:12 am)
Could this be a bad knock sensor. Both converters have been replaced within the last year with the o/2 sensors. Scanner reads o2 sensor and new converters are working ok. Also MAF reads good. 158 compression in cyl. and vacuum pressure is good. Yet I have no power unless I rev up the motor to about 3000rpm and then let off the clutch. this is the same in all gears, even at 45 mph ( until engine speed is upword around 3000rpm). Can I just unplug the knock sensor to test or is there another way? Thx for the help!!

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