Last post on Oct 18, 2013 at 2:23 PM
You are in the Toyota 4Runner
What is this discussion about?
Toyota 4Runner, SUV
Go to NHTSA to file a safety complaint.
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Jun 29, 2005 (12:02 pm)
I have a 1999 Toyota 3.4L V6 SR5 4WD (manual transmission). 2 years ago, my "Check Engine" light came on. I've been ignoring it for a long time (almost 40,000 miles!) but now I need to get my Mass. Inspection sticker, so I need to fix it.
Going to an "Autozone" auto parts store, they hooked up the diagnostic connector on my 4Runner to their OBD II handheld diagnostic device. The device indicates the error codes were 1135 and 0125. Inside the store, they can look up the codes on their computer. Assuming you always add a P to the code, they are:
P1135: "Pedal position sensor A circuit intermittent".
P0125: "Insufficient coolant temperature for closed loop fuel control".
Let’s start with the first one: P1135.
Huh??? I have heard of a "Throttle position sensor", which is located under the hood on the throttle body, and detects the throttle position. Does anyone know if the "Pedal position sensor A" is the same thing as the “Throttle position sensor”?I want to be sure. I looked on the OBDII home page, and I could not find error code P1135 listed! Since the first “1” in 1135 indicates “manufacturer”, and a “0” in that position indicates “SAE (Society of Auto Engineers)”, I’m thinking that 1135 is a special code specific to Toyota and not the general OBDII codes for all vehicles. The closest OBDII code I found was:
P0124 Throttle/Petal Position Sensor/Switch A Circuit Intermittent
So, I’m not sure what P1135 really means, since P0124 has the same meaning according to the ODBII diagnostic code table.
If I assume the description of 1135 on the computer at Autozone was inaccurate, and I try to match 1135 with the ODBII diagnostic code table, the closest match is P0135, which is:
P0135 O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 1)
Though, I had the codes checked a month ago (after neglecting them for 2 years), and the code P0120 was stored, along with 1133, 1135, and P0125. P0120 is:
P0120 Throttle/Petal Position Sensor/Switch A Circuit Malfunction
So, does anyone know if I have a real problem with my Throttle Position Sensor (“TPS”)? Or, does is there really a problem with the O2 Sensor Heater Circuit (assuming the code P0135 is what I should go by)? I was thinking that because of the next code P0125.
Another confusing thing. For code p0125, The computer at Autozone, as well as the IDBII Diagnostic code table, has this:
P0125 Insufficient Coolant Temperature for Closed Loop Fuel Control
My coolant temperature has been fine, and the level is fine. However, when I looked in a service manual (by “Haynes”), that same code is listed like this:
P0125 O2 Sensor heater circuit fault.
Wow – could this be my pre-catalytic converter Oxygen Sensor failing? What’s up with the strange description “Insufficient Coolant Temerature for Closed Loop Fuel Control”?
Anyway, if anyone has any experience with these error codes, I’d appreciate the help. Also, if it does turn out to be the O2 Sensor, what are the odds I’ve ruined my catalytic converters? I have two, since the vehicle is California Emissions.
I want to do as much as I can on my own, because I do not trust the Toyota dealerships, and they are expensive!!
#1073 of 2607 vibration
Jun 29, 2005 (1:24 pm)
Hello, 97 4runner limited 198k miles. Have mild vibration only when accelerating or cruising. As soon as you let off gas vib goes away.
#1074 of 2607 Re: Moonroof Stuck Open [gumby2]
Jun 29, 2005 (2:02 pm)
I've got good news and I've got bad news.
The good news is that the parts are in to repair my moonroof.
The bad news is that the dealer says they need my 4Runner for 3 days. Maybe they're planning on painting the vehicle while they've got it in the shop?
Can't wait to see what loaner car they'll try to stick me with this time.
Is is me or does anyone else dread bringing in their cars to the dealer? I'll keep you posted on my developments.
#1075 of 2607 Re: '05 4runner brake pulse [chankins]
Jun 29, 2005 (7:01 pm)
I get the same clunk. The dealer took it for a ride in the parking lot. He notice the clunk after a little help and encouragement to believe problems do exit. He said it was the drivetrain lagging between a stop and go. He said it was normal.
I asked him if he could lube the yoke as suggested by Polartoy. The dealer says they don't typically do this till 35,000 km or so. I only had 19,000 km. He said he'll do it anyways, even though its not really a warranty thing.
It didn't make a difference. Either he was pulling my leg and did not lube it or did a poor job at lubing. He said he'll look to see if there is a Transmission programming update.
The clunk does not always occur prior to acceleration from stop. It occurs also when you do a rolling stop. Then you'll feel a clunk as if some lightly rear ended you.
Jun 30, 2005 (7:18 am)
that could be a lot of things, from an engine or transmission mount going bad to driveline lash, to...all sorts of things. That can only be diagnosed by someone experienced who is driving the thing and focusing on the vibration.
4run4play: it is all about sensors. The FI has a sensor to tell it how warm the coolant is and adjust accordingly, and it sounds like yours may have given up the ghost. The pedal sensor message doesn't sound smog-related, but still important. Actually, it sounds like a warning a drive-by-wire throttle might generate, but that model wasn't yet drive-by-wire in '99 was it? I can't remember. It certainly is for 2003 and up.
#1077 of 2607 Catastrophic Engine Fire
Jul 04, 2005 (6:48 pm)
Friday, 7/1 I took my family on an extended trip in our '94 4Runner. About 20 miles from our destination, the "check engine" light came on. Almost immediately afterward, the engine started to lose power. We pulled off the road, and as the car came to a stop all the warning lights lit up and smoke started pouring out from under the hood and through the vents into the passenger compartment. I had the whole family get out of the vehicle and we stood off to the side. I was expecting the smoke to start dissipating once the engine cooled down, but instead, the smoke thickened and small pieces of burning material started falling out of the front of the engine compartment.
The fire quickly spread into the passenger compartment. By that time I had called 911 and a good samaritan with a fire extinguisher had stopped and tried unsuccessfully to put out the fire. It took about 10 minutes for the first fireman to arrive. By then, most of the car was already engulfed in flames. 5 minutes later the rest of the fire company arrived and began to get the fire extinguished. By that time, the entire car had been burned to a shell.
I have two observations about this: 1.) Thank God the gas tank never caught fire. The fire burned all around it. Both rear tires, the spare, and everything else in the rear of the vehicle were reduced to ashes. 2.) I was dismayed at the speed with which the fire breached the rear of the engine compartment. The car had a slow oil leak and the lower section of the engine block had deposits of old oil clinging to it. I'm sure this make things worse. Still, we had precious little time.
#1078 of 2607 Re: Catastrophic Engine Fire [tophat58]
Jul 04, 2005 (6:57 pm)
I'm sorry to hear of your misfortune. Thank goodness no one was hurt.
The car had a slow oil leak and the lower section of the engine block had deposits of old oil clinging to it.
I am surprised that wasn't discovered during routine maintenance.
#1079 of 2607 Re: Toyota 4Runner: Problems and Solutions [steve_]
Jul 05, 2005 (10:37 am)
My '90 4runner refused to shift this morning after turning a corner and I had to drive it home the whole time like that. The RPM just keeps climbing and I get no power. It seems like the automatic transmission is stuck in 1st gear. It's been sitting for about a week since I was out of town... Anyone have this problem before?
#1081 of 2607 Re: Moonroof Stuck Open [goshenbob]
Jul 05, 2005 (12:08 pm)
I've just got bad news. I was told last Friday that my parts won't be in until July 8. Who knows how long they'll take to actually perform the repair.
On the upside, I've been putting a hell of a lot of miles on that Highlander they loaned me.