Pressure cooker sound comin from my 95' f-150 only when im running between 30 & 40 mph
SOURCE: Idle fluctuates fast then slow. Knocks at 30-40 mph. gas mileage down
your ECU is faulty.
New ECU and voila problem fixed
ohh ECU= engine control unit
secondhand with do just fine.
get it fitted by professional
SOURCE: while driving im not able to go over 30 to 40 mph then it slows
The things you may want to look at first is the fuel filter (if it wasnt replaced), the CAT (if it has over 100k miles or has been burinng oil), a cylinder compression test and check the timing. Does the truck idle smooth?Did the truck get a COMPLETE tune-up? And are the symptoms constant?
SOURCE: I have a 90 Pontiac 6000 that starts just fine
Check your transmission lock-up. It's programmed to come in at at 40mph. You can replace the lock-up to come in at 60mph or better.
Or you may have some ignition wires going bad or distributor cap has crack in it.
SOURCE: white smoke coming from exaust while the car is hesitating
If you have white smoke coming from the cars exhaust this would indicate your engine is getting coolant in to the cylinder(s). This could be a bad head gasket, cracked or warped head. Sorry to say but your engine sounds as if it may need some big $$ work to be done to it. If you have the skills or a friend who does have a compression check done on all of the cylinders to help locate where the issue is at. Another way of check , with the engine cold, remove the radiator cap and start the engine if you see bubble in the radiator fluid this is air being pumped in to your cooling system by a cylinder or two. I wish I could bring you better news but the information you had shared you'll need to make a decision of whats your best course; repair or replace. If your confident you can do this repair over a weekend, otherwise this repair can get pricey.
Best of regards,
Tom
SOURCE: makes a humming sound between 30 and 40 mph
I suspect that one of your wheel bearing have worn out. SO to confirm please lift up one by one all the wheel and rotate. listen to any hum which corresponds to your noise. hold the wheel on either sides and check for any shake even a small one. if you detect a hum check the wheel bearings and the HUB, most cars have this assembly making the noise specially when the grease becomes dry or there had been water logging specially salty.If so change the bearings / hubs, when changing look out for any damage to the axle. I hope you get this right. Helpful? Good day.
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