Well I'm new to this but I have a major problem with my Ranger. Driving around 40- 50 mph the truck thumps. The tach doesnt spike check the lugs and axle bolts, everythign is tight. Its an 04 auto. with 36,000 miles. I did the trans. filter at 35,000 becuse I had the problem then also. Any ideas?

 

welcome to R-F, Mark!

 

Welcome. My first though was driveshaft. Can you describe it a little more?

 

Its like hitting a speed bump but doing 40- 50 mph but its only at high speeds I dont feel the thump lower then 40mph. Liek i said teh tack doesnt rise and engine doesnt rev. I've asked other people with the same year Ranger thats a 4X4 and many more miles and theres shift smooth. So idk what it is.

 

Can't tell about your problem but welcome!

oh and

 

are you in 4wheel drive...cuz mine dose that too somtime in 4wheel drive too

 

Tell you the truth its all the time in 2wd or 4wd

 

mmm idk then sorry....cuz mine only dose it in 4 wd...and with New york snow i dont need my 4x4 to sh*t on me

 

Same here but I'm thinking it has to do with the over drive since its low rpms and a higher speed

 

welcome to RF

 

Welocme to the R-F club!

 

is it a constant thump at those speeds?

Welcome to R-F

 

No, thats what I dont understand, I added Lucas Trans additive for slip, going to see if that'll work

 

Welcome

 

Ok I just asked a buddy about it and he says its the DPFE sensor. Its about $100, I guess its a diff. ressure sensor and they fill with carbon witch makes them skip.

 

welcome the DPFE sensor is only 25 bucks
please dont pay 100 bucks for it. they are cheap and very easy to install its located right behind the EGR vlave attached to the drivers side valve cover. i just replaced mine.

 

Alright a buddy just told me to replace that. Whats wierd is that I found it and its not even mounted to anything no screws, brackts or anything and I've had this truck since new. The only thing he told me was to buy a FOMOCo. one

 

Can you clean this PDFE??

 

If you bought the truck new and you have just reached 36,000 miles why havnt you taken the truck back to Ford for warranty work?? Even if the truck is just over 36,000 miles some Ford dealers will still do the work under the warranty from what I have heard, but If this was a problem before 36,000 miles I still dont understand why you didnt take it back to Ford though. I'm not bashing on you, just confused.

 

Welcome aboard. Another one from NY, too bad your upstate.

Now lets see some pics of that truck!

 

They said they'd take it to a local tranny shop and have them tear teh whole tranny apart and make me pay for the labor. The tranny shop is know for hack jobs. So I bought the part myself which was a steal $60 for a FoMoCo one

 

Howdy hombre!

 

welcome to the site.