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Chrysler Repair/'95 2.5 Jeep won't start

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Expert: - 11/17/2011


Question
i have a 1995 jeep wrangler about a month ago it stoped starting so i ran a start push button worked well then after 2000 miles it would start and sometimes not . i have only mila volt getting to coil hot side not 12v i also got a code from ecu 12 ecu lost power also 33 map senor replaced map same coades ecu would not clear coades when neg term was removed for 15 sec.replaced ecu same thing please help

Answer
Hi Bill,
Unfortunately I don't have any manuals for the Jeeps of the 90's and even the code numbers are different apparently from those of Chrysler in that the 12 code does say that the battery was disconnected recently which is true, but the 33 code in Chrsyler is for the ac clutch relay circuit, not the MAP in the Chrysler. Do you hear the fuel pump run for a second when you turn the key to the run position? Do you get spark when cranking it over? How are you getting the codes, by counting the flashes of the check engine light? Is the Jeep 2.5 identical to the Chrysler 2.5 4 cyl engine in the early 90's? If you aren't getting power to the coil hot side when cranking then that can be due to a faulty engine rotational sensor but ideally you would get a code telling you which one it bad. Try jumping 12v to the coil hot post and see if you can either get it to start, or at least put out a spark.
Roland

Chrysler Repair

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Roland Finston

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I specialize in Chrysler/Dodge/Plymouth cars, minivans, and SUV's for the model years 1982-2008 based upon my 50-year DIY experience, factory shop manuals and wiring diagrams. I offer fast repair advice to help you minimize repair costs by helping you diagnose and do it yourself. Problems with electronically controlled engines and transmissions as well as body wiring problems are my specialty.

I take questions one at a time between 8am and 10pm CT and attempt to answer within 20 minutes. "Maxed Out" means I am answering another question of otherwise busy, so try again later.

There are answers on file to more than sixteen thousand Chrysler questions at your finger tips: put a few key words in the "find" box (above) or click on "view past answers" for a chronological list of my q and a's. Don't use "Add to this answer" if you still have a question...ask it. As to trucks and jeeps I only have manuals for the '04-'06 model years.

Experience

Five decades as a 'do-it-yourselfer' on domestic and imported cars

Organizations
Yahoo Autos Group called The Chrysler Lebaron Club (co-moderator)

Education/Credentials
Degrees in Physics/bruised knuckles.

Awards and Honors
"Top expert of 2010" and "2011" at Allexperts. Among top 50 experts for years 2006-2009 at Allexperts.

Quickest "average response time" at Allexperts (currently no. 1).

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