Question about 1996 Isuzu Trooper

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Have a 1996 Isuzu Trooper LS, check engine light came on so I checked it with a scanner and it said generic code PO 133, which is a slow response, or slow switching so I put an oxygen sensor on, check engine light stayed off for a while, but then came back on with the same code. Would the map sensor or any other sensor make this code show up.

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I had the same thing. It is something to do with emissions apparently. I was told to check the fuel cap ! I put some silicone on the seal, cleaned it up, put it back on with the correct number of clicks and after about 15 minutes of driving, the Check Engine light stayed off.

Posted on Jul 30, 2010

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Its not likely it could be another sensor. p0401 is the code for map sensor, try erasing with a code scanner, light may stay out.

Posted on Jul 21, 2010


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I have 1996 Izuzu Trooper. The "Check Engine" light is "ON". What are the problems with the engine? Please advise!

The PCM has the answer to that. It is just telling you there is an issue with one or more of the systems it controls. What you have to do is get any codes that are stores to know what the problem is.

Autozones, or maybe other stores, will hook up a code reader and check to see what codes the PCM is telling you.

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Sep 14, 2011 | 1996 Isuzu Trooper

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I have a 1997 ford expedition 5.4 L with the check engine codes of PO153 and PO133 coming on.... the truck stalls and jumps need to know what part to replace or how many i need?

PO -133 O2 Sensor Slow Response

Po -- 153 same thing

Check for vacuum leaks --every where

Clean MAF Sensor -CRC MAF Cleaner

Replace the 2 --front O2 Sensors, if over
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Use the OEM Type not the cut & splice
universal junk

NAPA can order them
Should be Bosch or NGK

Codes do not tell you anything about what is wrong
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2 Answers

My 2000 Isuzu Trooper needs a catalytic converter.

yes they have 2 cataletic convertors, one each bank
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you can read codes by bridging pins 5 & 6 with ignition in on position engine not running


Jul 16, 2008 | 2000 Isuzu Trooper

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