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1995 Camry, idle issue

I have a 1995 Camry LE wagon with the 4 cylinder engine. On several occasions, the engine has almost stalled when I was stopping for a red light. All of a sudden the engine RPM would drop below 750. If I shifted to neutral and applied gas, the engine would recover and the car would have no problems for the rest of the trip. The times (4) that this has occurred, the engine was fully warmed up (often after driving at highway speeds). It only happen right before coming to a full stop on level payment. My mechanic tried cleaning the throttle body but it didn't help. Any ideas? This has happen 4-5 times over the last 6 months.

Reply to
noname87
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A few more details would be helpful. Mileage, auto or manual transmission, any trouble lights illuminated, and / or if an automatic trans, is the O/D light blinking?

Does this only happen when coming to a full stop from cruising speeds such as stopping at the end of an exit ramp?

Reply to
user

A few more details:

The car has 130K miles on it, a automatic transmission, no check engine lights are on, no other trouble lights are on and o/d light is not blinking. The transmission is in the normal mode (overdrive on, power setting off). Of the two times it happen to me (the others happen to the wife), once was stooping at a light coming off a highway and the other was when I was pulling into a parking spot after drive on local road for 1o minutes after coming off a major highway.

Reply to
noname87

When this happened to me, I had no trouble codes either. After a lot of investigation and finally the dealer pulling their head out of their asses, it ended up being a cracked/dirty fuel injector.

Of course someone else messed with the IAC (Idle Air Control) valve and so they claimed mine was 'tampered' with and made me pay for it.

I would investigate the IAC valve and make sure your injector cleaners are nice and clean. Ray O may have some other great advice but when this happened to me, that was the issue.

Might also be your MAF sensor -- they're self cleaning but I always find mine quite dirty and so with each oil change, I clean it myself as it's easy to do yourself and it can and does make a difference if it's dirty.

That's just my guess(es)!

Reply to
mrsteveo

I meant to say you may want to make sure your IAC is not gummed up and that your fuel injectors are not cracked or excessively dirty. During normal operation, they should be bullet proof although I was using fuel cleaner every fill up thinking I was doing a good thing when I was not. Sorry for the confusion on the first reply.

Reply to
mrsteveo

As mrstevo mentioned it may be the IAC, a dirty mass airflow sensor, EGR valve and / or control, or perhaps it is an intermittent O/D lockup solenoid.

It's a thirteen year old car and with no trouble codes, it may take a bit of diagnosis to solve.

Try the cheap simple stuff first, like checking vacuum lines and fittings, the IAC, EGR and MAF sensor and then maybe you want to have someone competent look at the transmission wiring and solenoid. Just a guess. Good luck.

Reply to
user

I forgot to mention that if you have not done it, you may want to change out the plugs, wires, and any other secondary electrical tune up component. I would use the OEM stuff IMHO.

Reply to
user

Something like that started to happen daily with my Nissan Frontier

1-2 years ago. I tried cleaning the throttle body and idle air valve and renewing a bunch of grounds (as recommended by a Nissan website), but none of that helped.

The problem was that the #4 cylinder's spark plug wire arced 1/4" against the sharp edge of a heatshield. I swapped that wire with another one, and it didn't arc even when held directly against that sharp edge. The idle didn't hiccup at all for a week, and then I put in new wires. Funny, but the bad plug wire looked fine, and I couldn't see any defects in the insulation even when I sliced it into several thin layers.

Reply to
larry moe 'n curly

This happened to a friend of mine. Crummy idle and slightly rough driving -- ended up being an arc'ing spark plug wire. Very good, easy, and cheap thing to check and replace if it hasn't been done in a while anyway.

Reply to
mrsteveo

This happened to a friend of mine. Crummy idle and slightly rough driving -- ended up being an arc'ing spark plug wire. Very good, easy, and cheap thing to check and replace if it hasn't been done in a while anyway.

I had the spark plug wire problem too. New wires seems to also increase the performance anyway so they are never a bad thing to change out.

Reply to
Reasoned Insanity

...

Try taking a mist bottle in the dark of night or the dark of the garage and spray around the wires. If you have leakage (bad wire or wires) you can see a light show. A cheap and easy ( and possibly fun) test. Tomes

Reply to
Tomes

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