bizboy

I wanted to look down the TB while the engine is running to see the spray pattern of the fuel injector plus I just wanted to get rid of the stuff on top to make it easier to get to the some of the connectors next to the TB. I’m just an old fashioned shade tree mechanic that is used to popping off the air filter on top of the carb, first thing. But it certainly is good to know that if I have a fuel problem, I better not try and fix it with the MAF not getting any air flow. Thanks, Zard _______________________________________ 89 DL 4WD Wagon with 73K

When I was doing my first tune up I discovered that I could not have the rubber air intake “hose” disconnected from the throttle mouth. I guess the Mass Air Flow Sensor (MAF) wasn’t getting any AIR FLOW and the engine would die. Is this normal? Is there any way to look inside the throttle throat while the car is running normally? Thanks, Zard _______________________________________ 89 DL 4WD Wagon with 73K

Thanks, Torxxx and Syonyk, Good info and thanks for the link to the info, it was very helpful. I found in the online manual, http://www.finleyweb.net/default.asp?id=142 that it’s easy to check if the idle switch is on. A bit confusing since it seems to go by many different names: Idle air control, (IAC); Idle switch signal, throttle sensor system. If anyone else is interested, it’s on page 14 in section 2-7 (Fuel Injection System), or page 24 of the pdf file. Warm up the engine. Turn the ignition switch OFF Disconnect the connector of the throttle sensor. Ensure that the resistance between the throttle sensor terminals A and B is 0 ohms when the accelerator pedal is released. My notes: Terminals A and B are the top two in the connector, and it’s the connector on the throttle chamber that you are testing. Zard

Hi All, I was happy to find this Subaru Board, as I have some simple questions. I just bought an DL 1989 4X Wagon with the SPFI on the 1.8 liter engine. Since it has 72,000 miles on it, I thought I would tune it up and change the timing belts. I spent the whole morning reading old posts but maybe someone could clarify some info about tuneups and changing the timing belts: 1. Do I have an EA82 engine and is it a non-interference engine, (Timing Belt can break without damaging the engine)? 2. There is no actual way to make sure the Idle Switch is ON, so you just assume it is ON, since you are doing the tuneup at idle? 3. You don’t really need a belt tensioner (special tool)? I saw in a couple of posts where some had made them out of bolts and stuff. Does anyone have a picture of one? 4. The timing belt tension should be checked every 20,000 miles? Thanks, bizboy