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Chrysler Repair/jeep won't start

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QUESTION: odom goes out when lights are turned on

ANSWER: Hi Rox,
What is the year/make/model/engine? Do you mean the starter won't activate or that it does but the engine won't 'catch' and run? By "odom goes out when lights are turned on" do you mean that the reading disappears entirely? and which lights turning 'on' causes this to happen?
Sorry for the delay but I just found your question in the 'pool'. Let me know the history of the problem, if anything might be relevant.
Please 'rate/nominate' my answer/me (see the PS below).
Roland


---------- FOLLOW-UP ----------

QUESTION: 2000 jeep cherokee just cranks and cranks like no gas or spark changed crank sensor and cam sensor still just cranks but no start when you turn lights on the odom and clock goes out completly  towed to garage saturday 450 bucks later and could not fix it is now at chrysler dealer 57 bucks to do diagnostic waiting now starter good fuel pump good with presure got spark

Answer
Hi Rox,
I suspect a fuel/air mixture problem, and that it may be that your exhaust gas recirculation valve is stuck slightly ajar which then leans out the mixture too much to sustain an idle. So check out that possibility by spraying some WD-40 on the valve stem where it enters the valve body and then move the stem back and forth against internal spring-action which is trying to close that valve tightly. I don't have manual for '00 model year of Jeep so can't provide any other specifics. But I have seen many No Start with no codes, and with fuel and spark, that are due to the egr valve.
Please 'rate/nominate/ my answer/me (see the PS below).
Thanks,
Roland

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Roland Finston

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Get a Free Fast answer to your repair question about a Chrysler/Dodge/Plymouth car, minivan, SUV, or truck. Problems with electronically controlled engines and transmissions as well as body wiring problems are my specialty. This free troubleshoot advice forum helps you diagnose faults, minimize repair costs or do-it-yourself.

I answer questions seven days a week and respond to you in about 30 minutes. "Maxed Out" means I am answering another question, briefly unavailable, or asleep overnight, so try again later.

I have do-it-yourself experience (50+ years) and a library of 100 1982-2012 Chrysler factory shop manuals and 20 multi-manual Chrysler Corp. CD's.

I was voted "Top Expert" 2010-2015, here at AllExperts, and have answered 20,000+ questions.

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
Advanced degrees in Physics/bruised knuckles

Awards and Honors
"Top expert" of 2010, 2011, 2012, 2013, 2014 and 2015 here at Allexperts. Quickest "average response time" at Allexperts (currently no. 1).

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