Question about 1996 Cadillac Eldorado

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~~no heat ~~~ random misfire~~~ two o2 sensors inactive~~~

And tomato soup looking power steering fluid~~~(i figure just flush this out with new stuff right?)

i just rebuilt and installed the engine and other misc things along the way~~~of all the things i did do, the one that i didn't was label the sparkplug wires~~~~ is there a digram for routing the wires?~~~(i think this may have something to do with the misfire)

thanks for your help

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My sincere apologies for the severely delayed response.
I am personally going back to answer your unanswered questions.
I have only been a free contributor to this site for 4-months.

I do not know if you still need this information, however I am answering it in case you still do.

For the 4.9L:
Firing Order:
Ignition Connections:

Let me know if this helped, or if you have additional information or questions. Feel Free to contact me at FixYa.Com!

Posted on Mar 19, 2010


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Misfires while idling

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What could cause frequent overheating and random misfire on diagnostic

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Random misfire, #4 misfire, and catalytic system below threshold

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Second-the code you got is a PO 304,which is a bad COP Coil On Plug on cylinder #4. That is a common Ford failure. DO NOT replace ALL the Coils
Just replace #4 if that is the code. They are $59.00 and tax at auto part store.
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Now the bad news

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Flush the P/S Fluid-Mercon
Flush Brake Fluid
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replace the power steering sensor, 30 bucks at NAPA, I had same problem and now I have O2 sensors bad because the power steering fluid pressurized the electrical lines and killed the O2 sensors

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Codes 1133-0131-0171-0300

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The random misfire may be symptomatic of the o2 sensor problem.

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