My mechanic did an overhaul on my engine but could not reconnect all the vacuum hoses expecial those on top of the engine.

If you lost a vacuum line then the heater would let hot air out the vents with or without the fan motor running. Do this test with the engine up to operating temperature Touch both hoses with the heater on and temp control to the hottest position. Now check the temperature of both hoses. They should be the same. If not that indicates a blockage of water to the heater core. Test the water flow valve too. It can be plugged with rust or not moving to let water into the core. The core itself can be plugged too. If you really need a hose diagram, a Chilton's manual will be your source of information. The engine won't idle well with a vacuum hose off.

You probably disconnected a vacuum hose that didn't get reconnected. The mode doors are controlled by vacuum and the default id the defrost mode.

could have bad pcv valve check and see if pcv getting vacuum take thumb see can you feel vacuum suction with engine running if no pcv valve bad or not getting vacuum check make sure pcv valve hose is not disconnect or broken is so replace vacuum hose.if pcv valve good and getting vacuum.problem could be your piston rings and oil control rings worn out or has too much oil in crank case.

Hi,
You got a classic one..........
Return the car from the one that overhauled/tuned it. the problem is the timing adjustment.

Check the ff.

• Ignition timing advance( set the timing to +5 degrees to +7 degrees dwell angle ) to a favorable setting.
• Check the vacuum hoses, replace the hoses w/ leakage, the main one is behind/under the carb that usually breaks first.
• Check the vacuum advancer on the distributor( test if it moves when you put a vacuum on it ).
• Test the compression in each cylinder.

Hope that helps you out!

You didn't say what year model, but look in the engine bay and under the hood for a hose routing diagram.

Some (most) Terranos have a vacuum pump attached to the back of the altinater. There should be no problem disconnecting these lines, as they don't contain brake fluid, they only supply vacuum for the brake master cylinder assist servo.

Thats the E G R valve go and get the coeds cleared

Well on the alternator there is a pipe connecting to it which in it oil flow to lubricate it ,check for that,one test you can do also,is take out the hose from the servo,then start the engine ,now by then put your thumb on the top of the hole of the hose,you will feel your thumb aspirated by the hose,if not you know the problem come from here,what you have to do if so ,you must change the alternator,the part behind the alternator is not producing the vaccum .Hope that help you.

Gerald:Was the engine overhauled because of the smoking problem? If so, the auto trans solution is more likely your problem. Good Luck

• Automatic transmission? - Check vacuum line to transmission . The only line of rubber going to trans. Located where it attaches ro trans and rwmove it watching to see if it contains any trans fluid. If hose has oil in itm Then replace the valve it was attached to. The valve is called a transmission modulator. The diaphragm is rupture and aloowing engine vacuum to **** and burn the fluid. your trans should be needing fluid too often. Modulator around 12.00 last known.
• Manual transmission ? - PCVvalve not bafflrd against drawing oil from its location in valve cover.and or Pcv valve is defective. Cheap fix-replace

Hello, it sounds as if the person had an issue with the head. There is no mention of pistons, rings, connecting rod bearings, engine main bearings, oil pump. These are parts to an engine overhaul. It sounds as if they had maybe a timing belt to break and may have bent valves or either the bolt that broke off required them to pull the head off the engine to have bolt drilled out. Please rate my answer, Thank you.