code 34 = knock sensor/circuit
What is causing this 93 j30 shakes at idle and slow excel code 34/51 : infiniti online mechanic? Code 34 is a knock sensor code.
Also you can remove the front oxgyen sensor and drive it. If the problem goes away it is probably your catalytic converter. The dealer replaced mine because the van has less than 80000 miles on it.I have a 2000 and I tried to get around replacing the knock sensor. I replaced fuel injectors, wires, plugs, distributor and some other parts. All this helped, but van still lose power and surges after engine hot. I been told after all this that the knock sensor retards timing and causes the fuel not to burn as it should. It not only senses knock, but is a protective device for the engine. I just purchased one on eBay for $65 and will install later this week. Should have replaced it when I first got the code.AnswerThat does not sound like a knock sensor problem. the knock sensor senses "knocks" in the engine and retards the timing accordingly. The knock sensor should not affect stalling, the problems are probably not related. The knock sensor itself is located under the lower manifold. It is a lot of fun to get to.
It can be very fatal on this engine. Replace every 5 yrs or 50k miles for best safety.
If the 1993 Mercury Villager runs rough when the check engine light comes on and the code reader says 34 and 51, there is a problem with an oxygen sensor and the MAP (Manifold Absolute Pressure) sensor. Both parts together will cost around $200.
Knock First - 2003 Crystal F- 2-34 was released on: USA: 2004
Knock First - 2003 Josh C- 1-34 was released on: USA: 2003
You need to replace that sensor, but it's not an easy job. I recommend to take you car to a specialist.Yes, replace the sensor. The a bad knock sensor will not immediately trip CEL until the vehicle has run through several cycles - hence the delay between clearing the computer and the light coming back on.
John and Leeza from Hollywood - 1993 1-34 was released on: USA: 29 July 1993
obd 1 code 34= knock sensorthe knock sensor is located underneath the intake manifold bolted into the engine and is hard to see unless with a flashlight.The knock sensor is 125.00 min to replace and have to search around for one, as they are hard to come across, you may want to check eBay for cheaper ones.Or, if you want to bypass the Knock sensor you can find the connector for it and install a resistor.http://www2.zhome.com:81/ZCMnL/PICS/detonationSensor/detonationSensor.HTMLActually, OBD 1 code 34 means different things for different vehicles. On GM Cars, code 34 is for the MAP sensor, orManifold Absolute Pressure Sensor, most often found on the intake manifold, or as in the Saturn S series, the Valve Cover itself. The connector wires are routed to the PCM, or Power Control Module, and depending on the vehicle, located usually under the dash.GM Trouble Code 34 indicates that the Manifold Absolute Pressure (MAP) sensor is detecting unusually high vacuum in the manifold. Code 34 will get set when:? Engine RPM less than 700.? Manifold pressure reading less than 13 kPa.? Conditions met for .22 second.OR? Engine RPM greater than 700.? Throttle angle over 20%.? Manifold pressure less than 13 kPa.? Conditions met for .22 second.Possible causes include:1. Faulty MAP-to-ECM connection2. Defective MAP sensor3. Defective ECMCheck the shop manual for details on vehicle specific MAP sensor applications.*You can find more info on the AUTOZONE.COM website, easy to use and understand, it's free and has priceless diagrams and repair info for most cars and trucks...
mass air flow sensor or manifold pressure sensor. your car will have either or.
The panel just snaps in. Be very careful and take a screwdriver and gently pry up on the panel. Good luck.