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97 ranger 2.3 surges at 45, oil sucking up into intake


97rangerxlt23

Member
Joined
Feb 10, 2013
Messages
23
Vehicle Year
1996/1988/1997
Transmission
Manual
I've been noticing it for a while and trying to resolve the issue.. truck seems to run fine but when I'm driving down the highway in fourth from 45 to 50 mph I fell a little surging or jerking but isn't horrible or anything.... tried pulling codes but nothing... what could it be? Also I pulled my air silencer out the other day and noticed oil coming from the tube that runs from the valve cover to the I take.. is this normal? Don't seem like it to me.. here's the rundown of what's been done lately.. within the last 20000 miles.. head was redone all newer valves and seats,New timing belt,all new top end gaskets,injectors sprayed well,and the rest of the top end work.. any help will be appreciated thanks
 
Not sure on your surging issue but if you are getting oil in the intake you might have a film on your maf or iac sensors. Clean them and thoroughly check the pcv valve and all of its plumbing. In fact replace the pcv valve.

AJ

sent from my Kindle Fire instead of enriching myself by reading a book
 
Not sure on your surging issue but if you are getting oil in the intake you might have a film on your maf or iac sensors. Clean them and thoroughly check the pcv valve and all of its plumbing. In fact replace the pcv valve.

AJ

sent from my Kindle Fire instead of enriching myself by reading a book

I agree especially the pcv it's only like 5 bucks I think. The other two you can clean with a 5 dollar can of cleaner. Use electronics safe cleaner, maf cleaner, or brake cleaner. 10 fix hopefully. Think oreilly has the brake cleaner 2 for five bucks at least they did like 2 weeks ago.
 
i work at another parts store down the road from the oreillys so maybe ill check it out on the cleaner.. i actually just bought a shit load of pcv valves off rockauto for my truck and have all the maf cleaner and shit at home too so ill try to work on it soon and see how that helps.. ill keep an update when i clean everything...
 
How many miles on the truck and is the oil being sucked up from the VC vent or the PCV? If it is the VC then it could be a bit of blow-by...

I recently tried that Engine Restore stuff and it made quite a difference in my engine. Didn't stop the burning oil completely, but I could tell there was more power and much less blow-by.

If you use it, make sure you shake it well...
 
It's sucking up through the valve cover... Never had anything do that before and the truck has 213000 miles on her...I recently change the oil maybe ill have to try the engine restore and check up on it to see if it works or not... I'm kinda guessing the air charge sensor might be throwing it off to surge since it could be getting coated with oil when it's sucking through the intake?
 
I would lean more toward an EGR problem for the surging.

Try driving it with the vacuum line removed from the EGR valve.

If it quits surging, I suspect the DPFE is going bad.
If you have disconnected your battery in the recent past, that can make the PCM "learn" bad values from a failing DPFE, letting it accept those bad values as still good.
 
Restore really works well on old engines. I have actually watched it work...my dad "rebuilt" a lawnmower motor but didn't replace the piston so it smoked like crazy. Put in Restore and let it run...after 15 min or so it stopped. My 2.9 gets a lot of oil into the intake tube so I made a "catch can" and put it in the PCV hose....it worked well but then I started using the motor less to slow down and shift it into neutral...that helped enough I took the catch can back off.
 

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