Question about 1994 Dodge Caravan

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Oxygen Sensor Can you tell me where the oxygen sensor is on my 1994 dodge minin van? Thanks Ed

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The O2 is located Under hood, center, rear engine area, above exhaust pipe flange, mounted in exhaust manifold

Posted on Dec 10, 2008

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What is an 02 sensor upstream 98 astro van


02 sensor is your oxygen sensor, 98 chevy astro carries 3 oxygen sensor. i belived your bad sensor is on the passenger side by the exhaust manifold but if not try the drivers side all the oxygen sensor for this van are the same. you need to go under the van to replace it, if is to hard to get it out turn your van for five minutes then turn it off and try again, be carefull not to burn your self. the one close to the catalytic converter is the downstream oxygen sensor ok, good luck!!!!!!

Jun 28, 2014 | 1998 Chevrolet Astro Van

1 Answer

1994 ford f150 oxygen sensor location


An Oxygen Sensor (O 2 S) or heated Oxygen Sensor (HO 2 S) is used on all engines. The sensor is mounted in the right side exhaust manifold on some V8 engines, while other V8 engines use a sensor in both right and left manifolds.

Heated oxygen sensors are located in the exhaust pipes below the exhaust manifolds. The sensors react with the oxygen in the exhaust gasses and generates a voltage based on this reaction. A low voltage indicates too much oxygen or a lean condition. Where as a high voltage indicates not enough oxygen or a rich condition.

Disconnect the Oxygen Sensor (O 2 S). Measure resistance between PWR and GND (heater) terminals of the sensor. If the reading is about 6 ohms at 68°F (20°C). the sensor's heater element is okay.

Hope this helps (remember to rating this free answer).

Oct 13, 2011 | 1994 Ford F150 Styleside Supercab

1 Answer

Were is the heater sensor upstream located on 2001 montana van


The heater sensor I think you are talking about it is the upstream oxygen sensor. Sometimes the code reader just says heater sensor upstream and doesn't tell you its actually the heated oxygen sensor.

Jan 04, 2011 | 2001 Pontiac Montana

1 Answer

Location of oxygen sensor on 1994 2.5 liter dodge spirit


Hello your oxygen sensor is in your engine exhaust manifold

Jan 01, 2011 | 1994 Dodge Spirit

1 Answer

Need to know where O2 sensor is located on a 2005 Dodge Grand Caravan.


There are two oxygen sensors: one is upstream of the catalytic converter and one downstream of the catalytic converter. The oxygen sensor, or O2 sensor is usually located near the catalytic converter.Oxygen sensor downstream of the catalytic converter in the exhaust system on the back of the engine. ------- Thanks.Helpmech

Nov 15, 2010 | 2005 Dodge Grand Caravan

1 Answer

Engine codes are 12, 51,21,53,55 can someone tell me what these codes are. engine is running extremely rich.


12 is battery has been disconnected recently, or went dead.
51 is Oxygen sensor stuck on lean mixture reading
21- no change in oxygen sensor reading
53- internal problem with logic module
55- is end of message/codes.

51 & 21, basically telling you same thing, but I wouldn't jump at changing oxygen sensor first, as a bad M.A.P. sensor can cause a rich mixture, thus oxygen sensor switches to lean to try and compensate. Personally, I'd go with map sensor first, check connections and vacuum lines if all good, replace it, then I'd go to oxygen sensor .

Oct 21, 2010 | 1993 Dodge Caravan

1 Answer

1998 Caravan: where is the Oxygen Sensor located on the van?...


Which engine do you have? There are at least 2, One upstream and one down stream. The down stream is right after the convertor, and the upstream is on the rear of the motor threaded into the exhaust manifold if you have the 3.3 v6.

May 17, 2010 | 1998 Dodge Caravan

1 Answer

Where's my O2 sensor located


Heated Oxygen Sensor (HO2S) SPECIAL SERVICE TOOL(S) REQUIRED Description Tool Number Oxygen Sensor Wrench T94L-9472-A
Removal and Installation
NOTE: If excessive force is needed to remove heated oxygen sensor (HO2S) (9F472) , lubricate heated oxygen sensor with penetrating oil prior to removal.
  1. Disconnect battery ground cable (14301) .
  1. Disconnect heated oxygen sensors from engine control sensor wiring (12A581) .
  1. Raise vehicle on hoist. Refer to Section 00-02 .
  1. Remove heated oxygen sensors from dual converter Y pipe (5F250) using Oxygen Sensor Wrench T94L-9472-A.
  1. To install, reverse Removal procedure. Tighten heated oxygen sensors to 36-46 Nm (26-34 lb-ft).

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Feb 22, 2009 | 1994 Ford Thunderbird

2 Answers

Where is the oxygen sensor?


Follow your exhaust manifold down from engine, it will be on side of exhaust, sticking out 2-3 inches, with wires coming from it to a connector.

Dec 10, 2008 | 1994 Dodge Caravan

1 Answer

1994 dodge caravan, 2wd, 3.0 engine


12 - battery recently disconnected. 21 - Oxygen sensor signal doesn't change (stays at 4.3 - 4.5 V) possibly bad O2 sensor 37 - Transmission temp. sensor reading low.
There are many options that can cause these problems, but loose wiring to the battery and a weak alternator would be one of the first things to check.

Sep 16, 2008 | 1996 Dodge Caravan

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