My car loses power when it warms up and i have replaced tps and plugs and the wires?
SOURCE: tps sensor
There are 2 screws that hold the TPS on to the side of the throttle body. Before you take the old TPS off, note where the TPS is located regarding the adjustment slots. Remove the 2 screws, and remove the old TPS, install the new one, and try to achieve the SAME adjustment. If you get the adjustment wrong, the engine will idle up & down. If it does, move the new TPS slightly until the idle smooths out.
SOURCE: bad stumble on acceleration pops through t- body.
Sounds like the fuel pressure regulator. Could also be that the timing jumped. But I'm leaning towards the pressure regulator. Hope that I could help. Best wishes.
SOURCE: car idles and runs rough intermittently after engne is warm.
one of you air line pipes could have collapsed or split which will cause a problem with idling and performance and it will give no smoke signs
SOURCE: 1990 4Runner, 3.0 L engine, won't hold idle, wants
Have you looked at your idle air control valve
What is it? This is an electrically driven valve that allows additional
control over the throttle at idle
Where is it located? The IAC is located on or adjacent to
the throttle body and consists of a small device held on by two bolts with an
electrical connector.
How does it work? When the throttle is closed the throttle plate closes off
any air from the intake manifold. In
order to stop the engine from stalling due to lack of air the IAC opens a small
valve allowing air to pass from the air ducting to the intake manifold. Often the IAC components consist of an air
inlet port in the inside wall of the throttle body, immediately in front of the
throttle plate, with a similar exit port behind the throttle plate. Connecting the two ports is a motor driven
valve. When the valve is opened air effectively by-passes the closed throttle plate to maintain the engine at idle. The IAC also augments the throttle when
additional power demands are put on the engine such as steering.
Symptoms of faulty IAC
How to check? Physically remove the IAC but keep the electrical connection
to it. Temporarily block off the now
open ports on the throttle, turn the engine on and examine the IAC valve action
in response to additional loads (power steering inputs etc). The valve should open and close according to
demand.
How to fix? If the motor of the IAC has failed
then replace the IAC. If the valve is gummed closed by baked
oil and carbon then clean it thoroughly with carburetor choke cleaner spray and
a cloth. Similarly if the entry and exit ports on the throttle body to the IAC
look blocked again clean them out thoroughly.
Testimonial: "Fast response and good advice, I'll try these suggestions and let you know the results."
94 views
Usually answered in minutes!
×