Last post on Oct 06, 2013 at 10:28 AM
You are in the Ford F-Series
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Ford F-150, Engine, Truck
Mar 05, 2011 (10:58 pm)
So i just bought a 1990 Ford F150 that had a few issues. 1st issue. Truck sometimes has a flux in idle but works itself out after a few min. CEL is on but nothing seems to be really wrong with it. ANY IDEAS. i would scan it but its not free here...Someone said to replace the TPS. Not sure if i should......2nd issue this thing shifts fine if you ease into the throttle. but if you stomp on it.... the tranny sound like it slamming into the motor..????? any help is helpfull.
#163 of 183 Re: Vibration Issues [enphluence]
May 28, 2011 (9:28 am)
I had the same issues as stated, our truck is an '08 /5.4L with 99,800 miles. I replaced the spark plugs, serpentine belt, Oil with Valvoline 5w20 synthentic along with z-max and prolong additives ( I do this every oil change). Then I removed and cleaned the throttle body thoroughly. After re assembly and rerun, the vibration and rattle disappeared after 50 miles or so. However, I cannot get the truck to idle below ~ 1200 RPM = to 45 MPH unless it downshifts to first gear which will then allow an idle of 700 ~ 750 rpm. Using too much brake to slow down. Anyone else have this problem? I have removed battery power to enable the PCM to 'relearn' the idle speed / fuel curve but so far no different result. Does anyone know of a good aftermarket programmer for this application? (Note I have a '98 with a 4.6L with 298,000 miles and never had any of these problems)
#164 of 183 Re: '04 F-150 Truck Front End Vibration [luv2draft]
Oct 04, 2011 (6:08 pm)
Hi, I was wondering, since the warranty company actually paid for your repair, may I ask which warranty company you have? Thank you
#165 of 183 Re: 2005-2007 F150 5.4 Engine vibration varified in 7 trucks [ninjohnsu]
Nov 06, 2011 (8:33 pm)
Don't know if you still have the truck or the question but the lifter noise is the cam phaser which retards the cam at low idle to conserve fuel and the engine vibration at varying rpms is most likely caused by this also. A slight tick is normal at idle a knock is not so if it is knocking or ticking abnoxiously loud buy the timing chain wedge and change out both cam phasers. If you try to do it without the wedge you will drop the chain and have to retime the motor.
#166 of 183 Re: 1990 Ford F150 XLT [fordguy2011]
Nov 29, 2011 (7:39 pm)
I am having the exact same problems with my 1991 Ford F150 XLT 4.9L I6. Did you have any luck finding out what was causing both problems?
#167 of 183 Re: Ford F150, 2004 - Vibration Problems (steering wheel, etc.) [bartb65]
Jan 08, 2012 (3:11 pm)
Yes, it is a characteristic of the truck. Ford designed that model to shake like that. I know because I bought one brand new. Long story short, it went to arbitration because it fell under the lemon law. Ford replaced everything on that truck. I met with the Ford field engineer who drove it then took me for a ride in a Lariat that did it too. He told me that it is a characteristic of these trucks and there is nothing they can do about it. He said Ford made the frame too stiff. What a bunch of BS. 6 months later I got all my money back, every penny and Ford took the truck back. Bought a Nissan. Love it.
#168 of 183 Re: Ford F150, 2004 - Vibration Problems (steering wheel, etc.) [2006f150guy]
Jan 12, 2012 (1:37 pm)
I have a 07 Ford F150.. it does alot of vibrating when I slow down to stop. It shakes hard then quits on me. I have had it in a few times, they put it on a machine, the machine indicates nothing is wrong??? they just replaced cams today, thought that was the issue.. Ran the truck for awhile and it started again. Now I don't know what to do.... I was wondering if my intuition is right in thinking it has something to do with the Oil pressure?
When the truck is shaking, if I give press the accelerater it stops shaking???
ANY IDEAS??? please.. Thank you!
Jan 24, 2012 (12:37 pm)
I got 2007 f-150 and about 3 months ago or longer i had my truck in for the tranny jerking. the technition told me the tranny need a down load of some sort. so they did it, and it ran fine for a while, no it is doing something different, i will be driving down the highway and between 50 and 60 mph the motor will rev up about 5,000 rpm and then rev back down it will do that a few time and does it when i hit that speed. can anybody tell me what it might be.
#170 of 183 Re: f150 trouble [ginger10203]
Jan 26, 2012 (7:42 pm)
well yes i can verify that that is a good question i can answer for you today i had the same problem with mine and its an 08n well what it turned out to be was with the transmission it had something to do with the computers and the torque converter was slipping on and off like it grabbing one second and the next it was up in the rpmss and then dropping back down so i would take it somewhere other than ford to have it tested or checked they once ripped my tranny apart and then saif it wasnt covered and put it in the back of the truck cause i wasnt paying them to rip my tranny apart and not diagnose what the problem was after it was dreivin there now i had to have it towed out of ford so stay far as away from a ford dealership as you can far far far far away b
#171 of 183 Re: Yet another one... [bunedoxx]
Mar 26, 2012 (11:20 am)
I was having the same problem with the shaking. When it was occurring I pulled over and checked the rear wheels. I can't recal which one it was now, but I believe it was the right wheel, anyhow, it was extremely hot. That is when I realized that the brake was stuck. I immediately drove it to my Ford dealer and they told me they fixed it. I found out the next time I went to change my rear brakes that all they did was disconnect my emergency brake. I did some more research and found that to fix the emergency brake from locking up I needed to replace the emergency brake cable. I haven't done that yet. Anyhow, that is a thought for the shaking you are experiencing.