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97 Tercel idles rough when first started

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New User

Mar 19, 2013, 12:26 PM

Post #1 of 2 (1125 views)
97 Tercel idles rough when first started Sign In

I have a 1997 Toyota Tercel with 140K miles, it's a 4 cyl 1.5 L engine with a 5 speed manual.

Last summer, I noticed that sometimes when the car had been sitting for a day or two, it would take a bit longer to start. It would crank fine (sounded normal) but instead of starting up right away, it would take a few seconds. I noticed if I would lightly press the gas while starting it would start right up. The weird part was that it seemed to be more likely to happen in warm weather.

As the weather got cooler this problem went away, and I haven't noticed it at all this winter. However, a few weeks ago a new problem surfaced which I think is related. If I park the car for a few minutes (say to go grocery shopping) and come out, when I start the car it idles very low and sometimes stalls out. Again, if I just do a light tap on the gas the idle goes up to normal and the car runs fine.

It's worth saying that other than this issue the car runs great, doesn't seem to be any other power issues or rough idle once the car is running.

Any thoughts or suggestions would be greatly appreciated

Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

Mar 19, 2013, 12:43 PM

Post #2 of 2 (1117 views)
Re: 97 Tercel idles rough when first started Sign In

  First eliminate all vacuum or air leaks in the system. You may have a bad IAC ( idle air control) but try cleaning the throttle body first. Remove the intake snorkel, have someone hold the throttle wide open for you and scrub the back side of the throttle plate and surrounding bore with an old tooth brush and some carb cleaner. Be sure to spray some into the small holes next to the throttle plate. That should help stabilize the idle. If it still has a problem, replace the IAC.


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