NARIMAN

hi
every once in a while mostly during some start ups it shows me engine reduced power and the car starts shaking, impossible to drive

so i shut down the car and after about 5 min it drives fine, but engine light shows up

i was wondering could that be because of the weak battery?

because my doors also don't open up right away

Thanks

extrapilot

Have the battery load tested, most parts stores will do this for free.
Check the spark plug wires also, as they have a tendency to pop off.
The door thing may or may not be related to the battery. They are know to develop dirty switch pad contacts inside them, both buttons.

Don-Vette

CadVette

Find out what codes it has first. It may have a possible dirty throttle body. They get gummed up inside. Kind of like a thin coating of tar. It gets worse depending on how many miles your car has. If this is your problem it should be removed and cleaned. Do not use harsh chemicals to clean it. Gasoline or Seafoam with a small non abrasive brush works. Do not move the throttle blade while cleaning unless you disassemble it.

NARIMAN

Thanks!

NARIMAN

checked today and it says
`P2101
throttle actuator

is that throttle body reason?

extrapilot

Try what CadVette posted, cleaning the throttle body first. Use a cleaner specific for the throttle body.

unclecookie

Do you happen to have a throttle controller installed in the car? If so, check the wiring and plug ins.

NARIMAN

i do have installed something that makes throttle pedal respond faster
for that i had to send the computer to get it programmed
is that what you mean?
beside that i just have intake and that is it

i will try cleaning and will see if that helps

Thanks

unclecookie

I was referring to a throttle controller that would connect between the gas pedal and wiring connector (such as the Vitesse Throttle Controller or equivalent). I had one on my car and got the same message as you did. I have no idea what caused the message and check engine light to come on, but since I removed the controller, I have had not had a recurrence of the problem. Hope you find the solution to your problem.

mancobra

I have the same problem and I do have the Vitesse controller , when u took it ( controller ) out did u have to reset anything ? or u just put back the original
and everything was okay ?

unclecookie

The Vitesse doesn't change anything in the computer, it just alters the signal from the gas pedal. So there is no need to "reset" anything. Before removing mine, I contacted Vitesse to report my problem. We agreed that I would first disconnect it from the throttle and verify that there was no longer a problem. When the problem no longer existed, I returned the product to Vitesse for a partial refund. I have not had a problem since returning the car back to original, nearly 4 months now.

mancobra

so the problem was the controller , if after 4 months everything is okay
with the original setup
it means the controller had a problem right ?

NARIMAN

cleaned throttle body and so far seems good
thanks!

unclecookie

As far as I'm concerned, yes the Vitesse was the problem in my case. After returning the controller for refund, Vitesse said they checked it out and could not find a problem with it. All I know is my car had a problem with it installed, and it doesn't have a problem since removing it.

extrapilot

Good to hear, keep us updated in the future...
BTW how many miles are on your car?


I've been researching the reduce power issues and found that the TPS's on higher mileage cars are sometimes the issue also.

NARIMAN

my car has 29k miles
today i started the car and same problem again
start was not as easy and smooth, i did hear one clicking sound, and then car start vibrating and showing the message engine reduced power
and engine light is on again

cclive

Remove the aftermarket throttle controller and drive it for a couple of weeks to see if the problem comes back.

RagTop69

Did you check your wires? The clicking sound you heard might be a loose wire arcing.