Question about 1999 Toyota Camry

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Engine warning stays on. diagnostic reads code for bad knock sensor but eng. does not knock

Engine doesn't knock it may be using more gas

Posted by Anonymous on

6 Suggested Answers

6ya6ya
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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

keemo68
  • 1263 Answers

SOURCE: Check Engine Light - 02 Sensor bad

usually the first O2 sensor inline is the one that's bad.it's the one right off the exaust manifold. this is due to the extreme heat. it get's. but before you go and replace it check to make sure that the plug it's self is not bad

Posted on Aug 28, 2008

  • 1861 Answers

SOURCE: knock sensor code, p0330

The knock sensors either work or they don't. When they do not, the light comes on. All that a knock senor is is a piezo crystal that vibrates at the frequency that is comparable to engine "knock", and sends that yes/no signal to the ECU. There are 2 knock sensors, and both are bolted to each side of the engine interior walls, under each cylinder head. You have to remove both of the intake manifolds to access the knock sensors and their wiring.
Price to pay? My flat rate book suggests 3.7 hrs to change both. 3.7 hrs times your local labour rate, plus the price of the 2 sensors and/or wiring, and the price for the gaskets for the upper & lower manifolds. Depending on your location, you could quickly spend over $500.00.

Posted on Oct 07, 2008

Toyota Guy
  • 42 Answers

SOURCE: Location of knock sensor on 1994 toyota 22vre engine

The Knock sensor on a 22re is located under the intake manifold on the engine block. to the upper left of the oil filter. With is the passenger side of the engine. I believe it is yellow in color. Not do be confused with the oil pressure sensor which is close by. The knock sensor has a larger electrical connector. Good luck it can be hard to get to.

Posted on May 06, 2009

  • 1244 Answers

SOURCE: Diagnostics shows speed sensor out.How many sensors

only one speed sensor it is in the back side top of the tranny has a 10mm bolt holding it in about $44

Posted on Jan 14, 2010

Testimonial: "I'll know better after I crawl under & check it out."

SOURCE: Hi, I've sent my toyota

To have so many different codes at the same time indicates that the first place to start looking is the wiring harness itself. Locate the MAP (manifold air pressure sensor - code 31) and IAT (inlet air temperature sensor - code 24) connections. Disconnect and reconnect each sensor a few times and check that the connecting socket and pins are clean and free of corrosion - the codes indicate intermittent breaks. Check all fuses are clean and well mounted. Examine wiring harness for chafing, abrasion and signs of wear. Any intervening connections between the wiring harness and electronic control unit (ECU) need to be checked over and should be free of oily grime.

Posted on Nov 17, 2010

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Knocking noise


Mechanical wear on engine, incorrect valve timing, lack of oil.
Knock sensors are detecting engine knocking so sensors not at fault. Ignore fault codes and deal with the noise.

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Truck acceleration problem, sluggish take off, loss of power, drinking gas


The first thing you do when the check engine light comes on is take it to an auto parts store and have the computer scanned for codes.
Then decide if the codes are something you want to tackle or have a shop fix it.
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Oil light stay on jaguar 2003 s type


That would indicate either a faulty oil pressure sensor or that the oil pressure is low. This would be caused by a faulty oil pump, partially blocked oil lines or lack of oil. Check and re-check oil levels whilst the vehicle is on a flat piece of road. Check you have the right oil dipstick for the car (it may have been replaced with a longer oil dipstick which would give you a false reading) or even that the engine may have been changed at some time! make sure you have used oil of the right viscosity (check the owners manual). If that doesn't fix it then give the engine a good flush out with flushing oil to clean out the oil feed system. refill with fresh oil. If that doesn't sort it, change the oil pressure sensor. (on the engine block). Get the engine diagnostics readout done to see if there are any error codes stored. If you still have problems then it may be the oil pump which will cost a lot of money to change!

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2000 silverado knock sensor issue


I think it not real probable that the cause of your knock sensor code is the result of bad gas. However, I suppose it IS possible. Most knock sensor codes are caused by engine mechanical problems like bad pully bearings, loose timing chains, broken valve springs, collapsed valve lifters, etc. that would cause a "knocking" or "tapping" in the engine.

The next most probable cause would be damaged knock sensor wiring. I have fixed many that have had damage from rodents getting into the engine compartment and chewing on the wires. Depending on which engine your Silverado is equipped with, the knock sensor could be mounted between the cylinder heads in the valley under the intake manifold. Mice like it under there.

Then again, it all depends on WHAT KIND of knock sensor code you are getting. For 2000 Silverado there are 3 possible knock sensor codes: P0325, P0327, P0332. The diagnostics (and possible causes) change depending on which code you have.

Jan 06, 2012 | 2000 Chevrolet Silverado 1500

1 Answer

Have 1999 nissan maxima code #po325 an code#po400 ?dont know what is wrong with car, check engine light on?need help please


Technical Description

Knock Sensor Circuit Malfunction
What does that mean?

A knock sensor tells the engine computer when one or more of your engine's cylinders are "knocking", that is, exploding the air/fuel mixture in a way that delivers less power and can be damaging to the engine if prolonged. The computer uses this information to tune the engine so that it doesn't knock. If your knock sensor wasn't operating properly, so that it was always indicating a knock, the engine computer's response may have been to change the ignition timing on your engine. Knock sensors generally bolt into or thread into the engine block. This P0325 code may show up intermittently or the Service Engine light may be lit constantly. Other knock sensor related DTC codes include P0330.
FB.init("dd7d9e9681341cde77587bc6a2029f6f"); OBD-Codes.com on Facebook Symptoms

You may notice drivability problems including a lack of power and perhaps some hesitation. There may also be other symptoms.
Causes

A code P0325 most likely means one or more of the following has happened:

Possible Solutions
  • Check the resistance of the knock sensor (compare it to factory specs)
  • Check for broken/frayed wires leading to the sensor
  • Replace the knock sensor

Sources: W. Farmer - Nissan


P0400 - Exhaust Gas Recirculation Flow Malfunction OBD-II Trouble Code Technical Description

Exhaust Gas Recirculation Flow Malfunction
What does that mean?

The exhaust gas recirculation (EGR) valve is vacuum controlled valve that regulates the amount of exhaust gases that re-enter the cylinders. The powertrain control module (PCM) determines how much based on engine load, temp, and other conditions. If the PCM detects that the amount of exhaust gases entering the cylinder were insufficient or non-existent, this code is set.
FB.init("dd7d9e9681341cde77587bc6a2029f6f"); OBD-Codes.com on Facebook Symptoms

No symptoms will likely be noticed by the driver other than the MIL (malfunction indicator lamp). However, non visible symptoms will be increased combustion temperature and increased Nox emissions.
Causes

A code P0400 may mean that one or more of the following has happened:

  • Plugged EGR passage which restricts the flow of exhaust gasses
  • Faulty EGR solenoid
  • Faulty EGR solenoid wiring/harness
  • Vacuum lines damaged/disconnected to the EGR valve solenoid or to the EGR valve
  • Faulty EGR valve
Possible Solutions

Since EGR valve designs are different, no one test will suffice:

  • Using a scan tool, operate the EGR valve with the engine running. If the engine stumbles, the problem was likely intermittent wiring problem or intermittent blockage problem
  • If engine doesn't stumble, operate the EGR valve manually, if possible. If engine doesn't stumble and die, the ports are likely plugged. Removal of valve and cleaning of all ports will be required
  • Checking of solenoid can only usually be done with a scan tool, because most solenoids operate with a duty cycle of voltage, rather than constant voltage
  • Check all vacuum lines, hoses, etc for any damage
  • Visually inspect the solenoid harness and the solenoid for damage
  • Replace EGR valve

Dec 06, 2011 | Cars & Trucks

1 Answer

I have a 2001 Elantra GT. with the auto trans in drive the trans slips when I'm doing 50-65 mph and the trans is in 4th gear if i have my foot to heavy on the gas. it doesn't do it as bad if I have...


First of all, Hyundai Transmissions use a 'specific' fluid called 'SPIII' and ONLY SPIII. Any other fluid doesn't meet Hyundai's specification and can cause 4th gear slippage (which is the TTC - Torque Converter Clutch - frequently referred to as the "lock-up" converter). You should have had a Check Engine Light. The problem you describe regarding 'doesn't drop back to first when I'm at a stop' sounds like the transmission has gone into 'Fail-Safe' mode because of the 4th gear ration incorrect. In "Fail-Safe" mode, the trans stays in 3rd gear until you cycle the ignition key off, and then back on. You need to scan your engine's computer to see what/which trouble codes have been set/stored in it. You'll need an OBDII scanner to read any codes that might be there. When a 'check engine light' (MIL=Malfunction Indicator Lamp) is turned on, there is a DTC (Diagnostic Trouble Code) set/stored in the ECM/PCM (Engine Control Module/Powertrain Control Module). This code identifies which engine management system component/function experienced a malfunction. Once you pull/read this/these code(s), you can begin diagnosis.

Sep 07, 2011 | 2001 Hyundai Elantra

1 Answer

Why does my car throw the code P0100 and P0325? I have a 1995 Nissan 240sx. and it has a random misfire once in a while.


Hi,

Often a single issue can trigger multiple diagnostics codes, especially if the circuits are closely related.

Code P0100 = Mass Air Flow (MAF) Circuit malfunction

The computer has detected an issue with the MAF sensor.

- Verify the MAF sensor wiring is connected and wiring is in good condition
- Unplug and reconnect the MAF harness
- Check that voltage to the MAF sensor is within factory spec


Code P0325 = Knock Sensor # 1 Circuit malfunction

A knock sensor tells the engine computer when one or more of your engine's cylinders are "knocking", that is, exploding the air/fuel mixture in a way that delivers less power and can be damaging to the engine if prolonged. The computer uses this information to tune the engine so that it doesn't knock. If your knock sensor wasn't operating properly, so that it was always indicating a knock, the engine computer's response may have been to change the ignition timing on your engine. Knock sensors generally bolt into or thread into the engine block.

- Check condition of the knock sensor wiring.
- Test the 'Ohms' reading of your Knock Sensor (undo the connector and measure the pins) to ensure it is within spec (ask Nissan for this measurement). If out of spec, replace the knock sensor.

Cheers,


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Jun 08, 2011 | Nissan 240SX Cars & Trucks

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YOU CANT RESET ENGINE WARNING LIGHT UNTIL YOU CODE SCAN FIX THE PROBLEM.BECAUSE IF YOU HAVE A BAD SENSOR THE CHECK ENGINE LIGHT WILL STAY ON.ONCE YOU REPLACE THE BAD SENSOR YOU NEED A CODE SCANNER TO ERASE TURN OFF CHECK ENGINE LIGHT.

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1997 V6 3.0L Camry coughs and splutters badly and has little power on start up. The cooler the air temperature the worse the problem. Improves as car and/or outside air temperature warms up and then the...


If it is a 97, go to the nearest Auto Zone. As long as the engine warning light is on, they will hook it up to their diagnostic computer and read the codes, telling you what is wrong.

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