• Welcome Visitor! Please take a few seconds and Register for our forum. Even if you don't want to post, you can still 'Like' and react to posts.

vacuum leak


  1. crs.wdp

    High idle 1991 Ranger 4.0 OHV, 1200 rpm

    First time posting here but I've been reading all the posts on here as well as other sites trying to solve my high idle. I'm running out of posts to read so I figured I'd try posting it and see if anyone has any more tips. It idles at 1200/1300 rpm. Its a 1991 Ranger 4.0 OHV Auto 4x4 STX reg...
  2. water in the gas?

    my 91 4.0 wont idle now hardly at all now but starts up fine and seems to run well down the road This was after i put in 3 gal out of a can that i think may of had about a cup of rain water at most, then let i let the truck run completely out of gas.. Then i added 5oz of seafoam to 5 gallons of...
  3. Need help!! Loss of brakes

    I have been trying to figure this out for awhile and I haven't been able to come up with anything so I'm hoping my Ranger brethren can help!! Whats happening: whenever I do a left hand U-turn, or even a sharp left turn, after straightening out, my brake pedal sinks down to the floor and I have a...
  4. Question regarding vacuum at PCV port on intake manifold--4.0 SOHC

    Hey Folks, The Vehicle: 2003 Ford Ranger Edge, 4.0 SOHC The Question: There is a port on the forward right side (passenger side) of the intake plenum (manifold) where the PCV elbow and hose is attached (the PCV valve is on the rear of the left valve cover). Should I get full engine vacuum...
  5. Massive Vacuum Leak

    I have a 2002 Ford Ranger XLT 2.3L. Today's project was simple: replace the Valve Cover Gasket, the Intake Manifold Gasket, and the Spark Plugs. Known screwups: Accidentally swapped two Valve Cover Screws (upper thread with nut screw switched with bolt screw) and only cleaned the gasket...
  6. Possible Vacuum Leak

    I have a 1998 Ranger 4.0 (OHV) I hear a hissing sound when I accelerate ... -Similar sound to air coming out of a tire -Seems to be coming from somewhere near the gas pedal (not sure which side of the firewall -It definitely gets louder as I accelerate more and makes no sound when idling -I am...
  7. 4.0L starts and dies within seconds without riding the accelerator

    Edit: Just took the OBD-1 codes. KOEO readings were: 157 - (R,M) Mass Air Flow signal is/was low or grounded - MAF [Understandable, had the MAFS disconnected to get it started] 543 - (O) Fuel pump monitor circuit shows no power - Power / Fuel Pump Circuits KOER readings were: 173 - (R,M)...
  8. Vacuum line severed?

    Yesterday I noticed that my vacuum line was snapped, part of it (about 3") was completely off... Would this be causing my truck to run loud? Also, where would I be able to buy some? It couldn't be more than a 1/8" diameter and is probably abit smaller. I've looked everywhere and nowhere has it.
  9. aaronhahn777

    High Idle... please help

    05' sohv 4.0L v6. I installed a cold air intake and a magniflow exhaust. I now notice a high idle. It's really bad when it first starts up. Runs at about 2000 rpm even once warmed up. Between 1st and 2nd the rpm will increase when I hold th clutch in... really annoying. Ok... so this is...


Top