2002 camry low rpms - Toyota Nation Forum : Toyota Car and Truck Forums
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#1 Old 11-02-2007, 09:28 AM
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2002 camry low rpms

I have a 2002 camry with a v-6, That we stored for the summer and ran good when I put it up.Now I have taken it out, and the car will not idle. When starting it cold the rpms are around 600 and as the engine warms up the rpms continue to drop until it stalls.any ideas?
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#2 Old 11-02-2007, 09:54 AM
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Two things come to mind. Firstly the gas could be old and varnished at this point if it sat all summer. Secondly and related, if the injectors are partially clogged by the varnish then they aren't flowing properly. There might be a cold start circuit which allows more air and fuel and someone more familiar with this specific engine can comment on that, but for starters I'd add a couple of bottles of gas treatment/carb cleaner to the tank, regardless of what's left in it and then drive it around for awhile to run some through and see if that unclogs the problem. Certainly that would be the easiest and cheapest fix if it works.

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#3 Old 11-02-2007, 10:33 AM
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Was the battery disconnected or drained dead during storage?

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#4 Old 11-02-2007, 10:37 AM
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Was the battery disconnected during use or did it run down?

Is the airbox or exhaust plugged with debris from a rodent?

Was the fuel treated before storage?

Have you driven the car yet? If so, does it drive OK and just not idle properly?


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#5 Old 11-02-2007, 01:02 PM
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battery

Yes the battery was disconnected, In fact I just put a new battery in yesterday because the old one would not hold a charge. I did check the airbox ,and it was clear. I have driven a few miles and runs fine going down the road, but will not idle

Last edited by Hagar; 11-02-2007 at 01:04 PM.
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#6 Old 11-02-2007, 01:04 PM
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It is most likely going through a relearn precedure. When the batt is disconnected it forgets how to idle. Try driving the car, if you can, and let it re-learn. Try to feather the gas to keep it running.

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#7 Old 11-02-2007, 01:10 PM
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Relearn

Thanks I will try letting it relearn, do you know how long that should take?
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#8 Old 11-02-2007, 01:10 PM
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Just put quite a few miles on it in town if you can.

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#9 Old 11-02-2007, 01:40 PM
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I recently replace the battery in mine and it relearned idle at the first stoplight. At the light the idle was low and slowly started to gain back to normal.

It helps to idle the car in gear.


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#10 Old 11-02-2007, 03:01 PM
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I have your car and i had this same problem once, after i cleaned the throttlebody it idled too low...what had happened was that the throttle position sensor got knocked askew somehow and adjusting it fixed the problem.
the arrow points to it in the image. The horshoe shaped plastic thing. It is mounted on the throttle body, (this picture is with throttle body tubing pulled off for cleaning the butterfly. )

Loosen DO NOT REMOVE the two small screws and rotate it to one side or the other. You may find this fixes your idle.

Last edited by marc780; 11-02-2007 at 03:49 PM.
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#11 Old 11-02-2007, 07:01 PM
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Quote:
Originally Posted by marc780 View Post
I have your car and i had this same problem once, after i cleaned the throttlebody it idled too low...what had happened was that the throttle position sensor got knocked askew somehow and adjusting it fixed the problem.
the arrow points to it in the image. The horshoe shaped plastic thing. It is mounted on the throttle body, (this picture is with throttle body tubing pulled off for cleaning the butterfly. )
Loosen DO NOT REMOVE the two small screws and rotate it to one side or the other. You may find this fixes your idle.
:ugh3 :
Do NOT follow this information!
What's up with people posting crap all the time? Why post information that is wrong and could cause other people more problems?

You SHOULD NOT just loosen screws and move it side to side. You will need a scan tool or at least a volt meter to adjust it properly.


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#12 Old 11-02-2007, 09:46 PM
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Quote:
What's up with people posting crap all the time? Why post information that is wrong and could cause other people more problems?

You SHOULD NOT just loosen screws and move it side to side. You will need a scan tool or at least a volt meter to adjust it properly.
It worked perfectly fine for me. I know what the manual says but there was no need to do all of that. This little adjust made it idle and run like its supposed to...full stop.

Last edited by marc780; 11-02-2007 at 09:51 PM.
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#13 Old 11-02-2007, 11:05 PM
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Quote:
Originally Posted by marc780 View Post

It worked perfectly fine for me. I know what the manual says but there was no need to do all of that. This little adjust made it idle and run like its supposed to...full stop.
Yea... all manufacturer's have a specified range but there really isn't a need for "all of that".

I've seen transmission shifting problems because people added the wrong fluid. I've also seen the wrong fluid seem to work fine. That doesn't mean that because it didn't cause a problem for some, that it should be passed along as good information.

I've seen people run 20W50 in cars that required 5W30 with no detectable damage. I've also seen it ruin bearings. That doesn't mean that is a good practice either.

I changed the throttle body on my Formula and because my voltmeter had a dead battery, I had to drive it to get the battery so that I could adjust the TPS properly. It worked fine, but didn't provide the optimum information to the PCM for maximum performance. I couldn't detect that by the seat of my pants of course, but that doesn't mean that I should tell someone to install a throttle body and not adjust the TPS. It would be inaccurate.

There are endless examples of such things that could be posted and passed along to others. I don't think that it's responsible or even intelligent to pass along bad information to others, because it worked fine for one person.

On the bad advice you passed along.


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#14 Old 11-03-2007, 12:22 PM
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Quote:
There are endless examples of such things that could be posted and passed along to others. I don't think that it's responsible or even intelligent to pass along bad information to others, because it worked fine for one person.

On the bad advice you passed along.

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#15 Old 11-03-2007, 01:02 PM
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You guys are funny. But seriously, don't loosen those screws. If the idle isn't where it should be, there is a problem elsewhere, and all you're doing is compensating for an existing problem. The TPS is set from the factory and everything is computer controlled, so as long as everything is operating normally, you shouldn't ever have to adjust it. However, if something DOES require adjustment of that item, you'll need a scan tool to make sure the values are correct.

On another note, cars don't "forget how to idle" when you desconnect the battery. Changing a battery will reset all the learned values that change as the car is driven, and that can result in a little different driveability that you were used to, but it certainly shoudn't stall.

When the thing is warming up like you said, does it run rough at all?

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