Anyone know what may be causing a tap when my ac is on? Only does it at low RPM though, if I keep the engine at about 1250 or higher, it stops. Below that, it taps. BTW, I just ordered my Eibach springs. I'll let you all know how that goes... Jim Golden

It is just when the clutch is engaged... so I guess I should have my AC serviced... Jim Golden BTW, I just got my Eibach springs on the other day... Much better ride than bottomed out struts!!!

I have the same problem with a metallic tapping coming from under the hood I have checked it out underneath the car thinking there was something stuck, but after all, I think it might be a little electromagnetic thing in the A/C but I don't know if our cars have that or not.

List, My car for a long time had a clicking/tapping sound, it was the lifters. At first it was just like you describe, now and then when the engine was hot and idling - but it got worse. Bad lifters wont hurt anything if you drive with them, but they rob power. By the time I got around to getting mine replaced ($300) I dout I could have beaten a mimi-van off the line. This happened at 55,000 miles. So in closing, it might not be the A/C, it could be the lifters. Patty 'set@...'

List, If your PSE is suffering from a ticking/clicking/tapping whatever you want to call it and it appears to be coming from the valve cover, it is indeed your hydraulic lash adjusters (lifters) making all the racket, but they are not the source of your problem. If you spent money to replace your lifters, I suspect 9 times out of 10, you just got screwed. A technical bulletin has been released by the AERA, and the actually sourse of the problem is not the lifters, but the oil pump. Please read the bulletin below for details: AERA Technical Bulletin TB1633 Manufacturer: FORD Displacement: 2 Ltr. Engine Ticking Noise on 1993-96 Ford 2.0L VIN A Engines The AERA Technical Committee offers the following informationn regarding an engine ticking noise on 1993-96 Ford 2.0L VIN A engines. This metallic ticking noise has been heard at idle and may be associated with rough running, stalling, or reduced power of the engine. This condition may be caused by an uneven wear pattern in the oil pump control plunger, which results in air entering the oiling system. When air enters the oiling system, the hydraulic lash adjusters will bleed down causing a ticking noise in the upper area of the engine. To test for air in the oiling system, Ford recommends starting the engine and letting it idle for 10 minutes. If a ticking noise is present, replacement of the oil pump is recommended. The plunger within the oil pump may also stick, causing rough running, stalling or reduced power of the engine. Starting the engine and running it at 3000 RPM while monitoring oil pressure can detect a stuck plunger. Normal oil pressure may first be 100 psi at startup and then drop down to 80 psi after maximum engine temperature is reached. Normal readings should be 57-71 psi at 3000 RPM. If the engine oil pressure stays near 100 psi, replacement of the oil pump is recommended. The revises oil pump, Part#F72Z-6600-AA, has an improved oil pump plunger which reduces the possibility of the above mentioned problems. The AERA Technical Committee December 1998 - TB 1633 Now some people have been complaining about a slight ticking noise when the AC in on. My AC had the same problem, and while I did find the source of the problem, I could not quit fix it permanantly. The sourse of my problem was a fan motor located under the glove box on the passenger side. If I recall correctly there were some metal contacts that "ride" on the fan shaft, and that the friction between the two was causeing a ticking/squeaking noise. I lubricated it with a lub for electronics and put it back together. I seen to solve the problem, but a few monthes later the problem returnened. I have not messed with it since, but the problem comes and then goes so seldom, I don't worry about it much anymore. I hope that helps, Enjoy, Bryan Pendleton