Tercel4WD.com

I don't think that system has any effect on the fuel-air mix or does anything to lean out the mix. According to the FSM diagram, it just acts as a switching valve to direct vacuum (or shut it off) to the flap diaphragm. When the HIC valve is open, the vacuum to the flap valve diaphragm should be dea...

My old '84 Camry had an economy button for the auto transmission that changed the shift points to sooner for better fuel economy. At least I think that's what it did. I never really noticed much of a difference.

Nordical25 wrote: ↑Wed Jan 11, 2023 1:07 pm

What's the "Economy" light for? (edit: I just realized you already answered this). It seems like a strange system since it would require an extra switch and wiring just to let you know how far you were pushing the gas pedal.

A belated thanks for the linkages photo. I can't remember how I set mine up, but when I have the time and motivation, I might try disconnecting the linkages one by one and moving the levers manually and feeling the airflow to see where the max airflow for each setting is and then making sure that th...

When I replaced my heater core, the longest-lasting problem was trying to get all the cable linkages/levers/flaps/ducting back together properly. I must have messed it up since now most of the air blows down on my feet no matter what setting the levers are on. I couldn't bring myself to try and fix ...

It's like the "Hashtag Van Life" trend from several years ago. Before that, old 1980's camper vans were being given away free or trying to sell for $300. Now, barely-running ones go for over 10,000. It's too bad the Tercel wagons have the "4WD" logos on them. It just makes people...

When I replaced my heater core it took 2 days and made me a worse person.

When I've had a vacuum leak that only happened when warm, it was the egr vacuum modulator diaphragm.

Mine smokes out the tailpipe on cold days for the first couple of minutes, It's not oil though, but a mix of water vapour (a normal byproduct of combustion) and unburned fuel vapour. The fuel vapour gives it a stink. Could this be what's happening with yours? I've been trying to figure out why I'm h...

The "jet" is just a small orifice that slows down the vacuum being applied to the choke breaker. The choke breaker slightly opens the choke by a few degrees on startup. Otherwise, if the choke is fully closed, there is not enough air in the mix and the engine will die right away. I've had ...

And check the little window on the carb to make sure the fuel level is about in the middle of the window.

I'd do a voltage check. Check the voltage on the battery when the car is shut off. It should be 12.8V or so. Then start the car and the voltage should jump to close to 14V. If it does that, the alternator is probably fine and it's probably a broken wire or corroded contacts in a wiring connection. I...

Bummer that didn't work. I think many of the Tercels came with single-port vacuum advances on the distributors. Judging by the emissions vacuum diagrams, one port comes from manifold vacuum and is to advance the timing at idle. The other hose comes from the throttle body (ported vacuum) and is to ad...