91 camry running rough some times stalls out - Toyota Nation Forum : Toyota Car and Truck Forums

ky91camry · 12-09-2006, 12:25 PM

Please help me I have know Idea why this happened? This car has been in my family sence it was new. My Dad to my brother back to my Dad then to me with no major problems. The other day the Blower fan started acting up not coming on and such so I pulled the seat out and then the glove box and such. Pulled it out and cleaned it up. I also put in a new CD player while I was working on the dash. I think I got it all fixed no more problems with it.

But here is my real problem I desided that being that I was working on it. That I would go a head and change the spark plugs and air filter. The filter was in real bad shape so I replaced it. Also I am not sure that the plugs have ever been changed they where real hard to get out very black and burnt looking. So I changed them with the same plug type that came out of it. I also flushed the radiator and added new coolent to it. So I thought I was in good shape. Now it is running really rought and stalling out sometimes at a stop. So I thought maybe the plug wires where bad. I changed them out along with the distibitor cap and the button. Still the same thing running rough at slow speeds and at stops some times stalling out. Other details I put a new battery on it a few days ago and cleaned out the alternator becouse sometimes it wouldnt charge untill the rpms got up and the battery light would come on. But after cleaning it out with contact cleaner it never happened again. So I am down to the running rough and stalling out this car has 265000 miles on it

What could I have done to have this happen or is it something else Please help

Mike Gerber · 12-09-2006, 12:45 PM

Check around for disconnected or cracked vacuum hoses. Also check the big tube leading to the throttle body for cracks and holes. You move it around quite a bit when changing the air filter. These things have a tendancy to get brittle with age and can crack or break easily when moved around. If that happens, lot's of unmetered air is entering the throttle body and the ecu (computer) doesn't know it, so it can not adjust the fuel mixture properly.

Mike

ky91camry · 12-09-2006, 02:08 PM

Ok I went out and checked out the vaccum hoses found none unhooked and they look like they are in pretty good shape for a car with 265K on it. I also checked the main hose to the EFI from the filter it is in good shape too. I started the car and It does not miss or try to stall when first started. That was also the case after I changed all the stuff on it. It doesnt seem to start this till It warms up. So after it warmed up It started it again. Just for the hell of it I unhooked the new CD player to see if that was caseing something electrical. Nothing? I did put the timing light I have on it to make sure of fire and it seems fine. So anymore help guys I am at a loss.

Kep · 12-09-2006, 03:47 PM

The air flow meter in the air filter cap sends a signal to the ECU. When you changed the air filter you may have somehow jammed the air vane inside the cap or damaged a wire or connection to the cap's plug that may be contributing to your problem. Check the air vane for easy motion and maybe disconnect the wire harness and plug it back in to see if that helps.

My perinial favorites: clean the EGR valve, the vaccum lines running back and forth to the EGR's vacuum modulator, the IAC valve, the throttle body, and all the ports on the throttle body. Do a static resistance check on the coil and look at it for cracks (you may need to remove it from the distributor so look at it thoroughly).

Once the car dies, can you start it right back up? Is there anything happening at higher RPM?

Kep

ky91camry · 12-09-2006, 08:14 PM

I have already checked the vane in the Air filter That day. It seems to be closeing up fine. I did remove the plug that day to remove the air intake to change the distribiter cap. But it was doing this before I did that. It started just after the spark plug and air filter replacement. No at high speeds It seems fine. It seems as if it runs better then before going into passing gear and such. As I would have expected after a tune up. It just seems to do this after warming up and at low rpm such as setting at a stop light or something like that. It has only actually died one time so far at a stop. But it started right back up. I am not sure what the EGR is so if you can explane alitte more on that it would help and what do you use to clean the valves with and ports?

ky91camry · 12-10-2006, 02:46 PM

Ok this morning I got in the car and the gas pedal would not move I poped the hood and the trottle was sticking I had to break it looks with my hand Is this something that would couse the car to act funning like I was saying before And how do I fix it and with what?

atobe · 12-10-2006, 04:09 PM

yes clean out the throttle body... buy some cans of throttle cleaner at the autozone disconnect the intake pipe at the throttle body and give it a good spraying/cleaning with a tooth brush... there's also a small oddly shaped hole.. that's the idle air controler... spray some in there also

ky91camry · 12-10-2006, 04:38 PM

Hey is trottle cleaner the same thing as carb cleaner? Im new sorry lol

atobe · 12-10-2006, 05:33 PM

yeah that works too.. even brake cleaner will work as long as it's sensor safe

Mike Gerber · 12-10-2006, 06:02 PM

Quote:

Originally Posted by atobe

yeah that works too.. even brake cleaner will work as long as it's sensor safe

I have never seen any O2 sensor safe brake cleaner. It is not designed to be used/burned inside your engine.

Mike

ky91camry · 12-10-2006, 06:38 PM

Ok I am sorry to bug you guys so much but I was also told to clean the EGR/ IAC valves and I don't know what they are can someone help me out with that please. I really want to fix this dam thing I don't have the money here at Xmas to pay to have it done. Thanks

atobe · 12-10-2006, 07:10 PM

like i stated it's the idle air controller. like u stated your throttle butterfly was stuck which means it's probbly dirty as heck in there which would cause the rough running..

http://www.4x4wire.com/toyota/mainte...throttle_body/ here you go... the picture with the toothbrush shows the AIC spray in that hole also..

Kep · 12-11-2006, 01:22 PM

Auto Zone has a WEB page on throttle body cleaning at: http://autozone.com/servlet/UiBroker...3d801574ae.jsp

marc780 posted a good diagram and picture of the IAC at:
http://www.toyotanation.com/forum/t144688.html

Kep

ky91camry · 12-13-2006, 05:58 PM

Hey guys I removed the trottle body and cleaned the butterfly valve and run deaner threw all the holes and cleaned it all up. WOW that made a huge diffrence It runs good now. It idles at a stop like it should now. Now the only thing I can see that might not me just right is that when I put it in park and the idles diffrent. It seems to miss just ever now and then. But its driveable now and I thank all of you for your help

atobe · 12-14-2006, 12:46 AM

how does it idle in park?? there's a screw on the throttle body you can adjust the idle.. try turning it up a lil bit.