Recent content by bills86e

The TPS is a potentiometer. Throttle Position Sensor It works just like the fuel level float.

1994 T4R stock 4wd I need suggestions for better gas mileage. $he is at 13-14 now. Thats Poor! What should TPS spec be? Can I hook up my Maxidas to this OBD I ? No CEL Tires are at 40 lbs How does the fuel/air ratio get determined?

Use your stethoscope and listen to hear that all the injectors are clicking. You may need: Fuel Injector Service,Outboards,Marine,Motorcycles,ATV,Yamaha

It could be a bad gauge, bad relay, bad fuel sender on the pump. My guess is the latter.

Poor gas mileage and fuel smell I had this recently discovered problem on wifes truck: 1994 4runner SR5 3.0L 3vze My Vacuum Switching Valve is open at start up and the vacuum is opening the EGR valve, irradic Idle results. It runs crappy and a foul smell too. How does this valve close, it will...

Remove the Battery & the Starter. Take them to your auto part store and get a free Load Test. Post the results.

rent a power probe III. You pay autozone, then when you return it your money is refunded.

Clean the IAC & Throttle body with CRC Throttle body Cleaner.Send your injectors to Fuel Injector Service,Outboards,Marine,Motorcycles,ATV,Yamaha. Install new *plugs. ALL WILL BE WELL IN TOYLAND! A small price for peace of mind. OBOY, Its almost JETSKI weather! I live in Florida! Bill

Buck, Buy some CRC throttle body cleaner, clean the idle air controller valve and throttle body. I'd bet that improves its performance!

Buck, Ya need to seal those terminals so moisture doesn't get to the crimp. I reckomend solder and marine heat shrink terminals. Under hood gets alot of moisture, and the electricals produce four times the corrosion when electrically active. Marine type had a glue that seals when the shrink tube...

The modulator is merely a filter to keep carbon out of the EGR mechanism valve. My guess is you have the vsv hoses on the egr & fuel regulaor mis-routed. These hoses get mixed up when the plenom is removed and the pcv is under there. code 71 and vacuum lines. - Page 2 - YotaTech Forums

IAC or fuel pump, could be culpret. Open the diagnostic port cover and look for T1 and E. jumper those then turn ignition to the ON position and watch for the DTC readings. Search the codes, fix what the code symptoms suggest is wrong.

Buy some CRC throttle body cleaner and clean it, the IAC, Modulator filter, MAF, and adjust the idle screw on throttle body to 750-850 rpms at idle. If you pull the rubber hose off the EGR valve and it smooths out, you may have to look at the vacuum hose routeing diagram thats on driver side...

Idling at 1500 is not right. try turning the flat head throttle body idle screw to 750-850 rpm's. The PO may have by-passed the heater core if it leaked. Do a compression test and post results. Have a radiator shop test the system for gases. Check that EACH vacuum hose is properly routed. Buy...

Vacuum hoses routed wrong? Bet ya had recent work? The 3 under plenom center passenger side vac hoses from vsv's to those 3 tubes get mis-re-attached. two are egr, other is fuel regulator. thats where the smell comes from. Poor gas mileage and fuel smell. I'll include a link...