What does it mean when Toyota pickup surging idle?
They are activated by coolant temp to open and close for quicker warm up. When they stick then you get this surging up to 1400 RPM or so then a rapid drop in RPM’s and the cycle continues as long as you are on the brake pedal! In other words it’s the IAC that’s bad. 7 people found this helpful.
How do you stop a Toyota pickup truck?
Lastly, push brake pedal while engine running, then stop engine with pedal still depressed for 30 seconds, if there is no change in pedal reserve travel, the booster is all well, and air tight.
When to take IAC valve off Toyota pickup?
Since this only happens when warm and when brake is applied, are you saying to take the IAC valve off when engine is warm, then block throttle body? will it crank with the IAC off? I appreciate the explanations.
How do you start a Toyota pickup truck?
Then, start engine for 2 minutes, push brake pedal 4 times slowly, if pedal goes down farther the first time but rises after the 2nd or 3rd time it is air tight.
What should I do if my idle speed changes?
The next time idle lopes, take the handle of a screwdriver and tap on the Idle Air Control valve. If the idle speed changes when doing this replace the IAC valve. What system does this truck use for “cold starts”? Some use an extra fuel injector in the throttle body and perhaps this injector is not closing properly and dripping in some extra fuel.
https://www.youtube.com/watch?v=czOG-4XdxOQ
How to check the booster on a Toyota pickup?
Of course check the large vacuum line to booster, all vacuum lines should be tight on their connections, sometimes you can cut off a small section and reattach if there is enough hose. Hope this works. 10 people found this helpful.
Can a bad throttle position sensor cause idle surging?
Idle surging can be caused due to other issues in the car, but if it happens in conjunction with other throttle position sensor symptoms, the culprit is often the TPS. At idle, the ECM will not get the correct information and the throttle will variate randomly causing idle surges. 3) Check Engine Light
Why does the idle surge when in neutral?
This went away the next day or so, but every time I’ve made that 4 hour drive, it happens for longer and longer each time. Now its really bad, and on top of the idle surging while the brake pedal is pressed, it ALSO idles really really high when in neutral and even sometimes surges but in fewer intervals when in neutral.
What kind of engine surges under throttle TPS?
0 Members and 1 Guest are viewing this topic. I have recently bought a 1985 Toyota Hilux 22RE to build a rock crawler. The bed has been bobbed 1 foot. The engine surges badly when 1/4 or more throttle is applied. It runs well if the Throttle Position Sensor is disconnected.
What to do when idle surges like crazy?
1. Warm up the engine completely. 2. Remove the intake boot at the front of the TB (throttle body). 3. Duct tape the big hole shut on the lower right hand corner in front of the TB plate/butterfly. Please make sure you clean where your gonna tape so the tape doesn’t get sucked in. 4. Connect the boot back.
Where is the stop light switch on a 1988 Toyota?
If you have access to the 1988 Toyota Electrical Wiring Diagram manual, you can find the circuit that’s giving you the problem on page 28 (TCCS section 6-1). You start at a 15 amp fuse (15A STOP) that feeds the STOP brake light switch (brake switch).
How to remove adjustment screws from Toyota carb?
To remove it, drill a hole into it (be careful not to drill into screw, put some tape around the bit so it can go in only a 1/4 inch). Drill off to one side not in the center. Then install a screw into the hole or a pointed object, and remove the plug with some pliers or by orying it out.
How to remove Mas plug from Toyota carb?
There is a mixture adjustment screw (MAS) plug covering it (if it hasn’t been removed). This will have to be removed. To remove it, drill a hole into it (be careful not to drill into screw, put some tape around the bit so it can go in only a 1/4 inch). Drill off to one side not in the center.