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2007 Dodge Ram 1500 pulsating grinding in gas pedal/steering wheel


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drrigney
New User

Nov 13, 2014, 2:45 PM

Post #1 of 5 (2234 views)
2007 Dodge Ram 1500 pulsating grinding in gas pedal/steering wheel Sign In

2007 Dodge Ram 1500 2wd 4.7L, 70,000 miles
Had it aligned 6 months ago because I was getting "death wobble" at highway speeds. Left shop, truck pulled to right. Took it back & still pulled to right with even worse wobble. Was told it was radial pull that would disappear with tire rotation. Rotated tires, pulled to left. Replaced brakes 1 month ago, now truck pulls to right again. I also feel a pulsating grinding in gas pedal and steering wheel around 40 mph, regardless of RPMs. Goes away with higher & lower speeds. Checked all 4 wheels for bad bearings, no play in wheels and no noise from bearings. Any advice?


Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

Nov 13, 2014, 10:13 PM

Post #2 of 5 (2214 views)
Re: 2007 Dodge Ram 1500 pulsating grinding in gas pedal/steering wheel Sign In

Oh boy. There's so much on the list and alignment is supposed to be the LAST thing you do when all is known proper right down to tire pressure.


"Brakes done" What does that mean? There are tons of parts and things to know they are right and if needed were they worn evenly by axle or signs noticed of differences one side to the other. If so you chase that down as to why in the job or really just a waste.


Wheels, tires must be right type and condition with even wear at least per axle and apparently not. Amazing you can just run your hand over a tire and feel the slight wear patterns on many even when all fairly new.


Radial what you were told? No. The truck's specs may show correct alignment angles but you don't know road behavior till driven and all things known right.


This feeling of pulsating/grinding suggests the you should check motor and trans mounts AND exhaust parts or any can't touch metal to metal parts or move too much.


Any alterations from OE wheel and tires suggested by size or type for the truck or all bets off for road behavior.


Brakes, whatever what done changing the way it pulls suggests a dragging caliper and tires not even by all you said. You can do some alignment adjustments that help within specs for some ordinary pull to one side by common roads you drive if the road is highly arched for drainage or even a little most vehicles notice that especially a good highway.


Other is when wheels are take off just to rotate tires you can get dust, dirt, rust flakes fall behind rotor or a drum to where it contacts hub and with wheel retightened up it's no longer true to the hub even with lug nuts tight.


In short. Whole vehicles need be right on with all items and then the alignment is done LAST to finish it off for best drivability.


Alignments alone don't cure other problems but do get blamed for all kinds of other issues or bring out an issue not noticed before doing one,


T


(other things on this) Any heavy loads or changing load this carries matters too. Less with trucks but some people plain body weight if enough can change the alignment angles if not even as vehicles generally get aligned with nobody in them. Some get fussy about how full the gas tank is too........)



drrigney
New User

Nov 14, 2014, 2:21 AM

Post #3 of 5 (2209 views)
Re: 2007 Dodge Ram 1500 pulsating grinding in gas pedal/steering wheel Sign In

Thanks for the input. When the tires were rotated, my front driver side rotor looked like a vinyl record with all the grooves in it. Brakes never squeaked and rotors weren't warped. I went with all new rotors & pads then eventually new calipers as the old ones were seized so bad that I broke 2 C-clamps trying to compress them. Recently the truck feels like it doesn't want to roll in low gear. Engine is running fine, almost feels like transmission isn't getting the power it needs. Just trying to fix what I can before breaking the bank at a shop.


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Nov 14, 2014, 3:03 AM

Post #4 of 5 (2200 views)
Re: 2007 Dodge Ram 1500 pulsating grinding in gas pedal/steering wheel Sign In

Are you sure you have resolved all your brake problem? Sounds like you may not have.



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Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

Nov 14, 2014, 3:06 AM

Post #5 of 5 (2199 views)
Re: 2007 Dodge Ram 1500 pulsating grinding in gas pedal/steering wheel Sign In

Now I'm focused on brakes. Finding calipers that frozen - AFTER new pads and rotors may have wrecked the pads and rotors and more so playing Ping-Pong gets costly. If you meant later the rotors looked like a vinyl record evenly depending on our views that's about right no shiny like a mirror.


No matter but wheels should spin free and even coast when hoisted, non drive wheels longer of course but free. You also have flex hoses that can lock pressure feeling like a frozen caliper but usually one at a time, wheels get hot from dragging brakes, pull changes and might go away for a while or lock up tight?


1/2 ton probably 4 wheel anti-lock and if you pushed frozen caliper fluid back thru all that full of burnt fluid with debris all bets off what problems that will cause. You don't push fluid back thru those you let it out of the bleeder which no doubt didn't work or snapped off if caliper frozen those probably no good to do brakes plain pads and rotors if I have the time line right?


Check if it's still dragging brakes as that would feel like a trans problem if enough.


There also may be codes pending if you don't like the way it drives engine/trans wise get a high end code reading that included transmission for ideas but think you are fighting with brakes still.


No dragging and that includes rears and the way the parking brake works on this as well (didn't go looking yet) as part of those calipers if disc, a drum inside rotor or total drum rear brakes (did any still use drums?) cables have to be right for any but all drum you are using the service brakes with cable not hydraulic. Cables mess up, freeze, don't release or get adjusted so wrong gets tricky to get even new ones just right again,


T







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