Question about 1989 Jeep Wrangler

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I need a drawing of hoses (pcv solenoids on top of engine)

I recently rebuilt a 1987 Jeep Wrangler. I need a drawing ..preferably in color of the hoses which go to small solenoid switches on top of the rocker cover..(upstream ..downstream is what the catolog says but I cant dtermine where they go. The hoses go to various places on the engine like the carburator ..exhaust , egr valve etc .. there are some places I have not connected to because I am not sure where they go..

Do you a drawing like this ? Thanks

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Click on the link.
This should be vac lines for 4.2L engine.

Posted on Jun 09, 2017


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  • 2 Answers


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Posted on Jan 02, 2017

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SOURCE: 2004 Jeep Wrangler Solenoid


Posted on Jan 05, 2009

  • 195 Answers

SOURCE: How many upstream and downstream

Depending on the engine, there will usually be four o2 sensors. They are easy to identify when you get under the car. Follow the exhaust tube from the exhaust manifold down the pipes. You will see a sensor with leads on it screwed into the pipe.
RPM Northwest

Posted on Apr 27, 2009

  • 412 Answers

SOURCE: replace oxygen sensors

these engines have 1 upstream o2 sensor and 1 downstream o2 sensor..the 1 in the rear exhaust manifold is the upstream and the 1 after the converter is the downstream..make sure you replaced the right one

Posted on May 16, 2009

  • 123 Answers

SOURCE: loose solenoid connection. intermittent starting

go to workshop

Posted on Jul 17, 2009

  • 323 Answers

SOURCE: oxygen sensor confusion

1/1 is upstream sensor on the number 1 cylinder side, 1/2 is the downstream of the number 1 cylinder side, 2/1 is the upstream of the number 2 cylinder side, 2/2 is the downstream of the number 2 cylinder side. Hope this helps.

Posted on Aug 10, 2009

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