vacuum leak

After months of dealing with vacuum leak symptoms I finally found a vacuum leak on the intake manifold. The leak is located on toward the front of intake runner #1. A description of the symptoms for anyone who finds this through a search: High idle between shifts. The idle returns to...

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...

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...

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...

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...

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...

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...

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)...

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.

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...