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Chrysler Repair/2002 Chrysler T&C - Codes 700 & 740

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Expert: - 11/15/2011


Question
Hi, Roland.  I have a 2002 Chrysler Town & Country with 190,000 miles on it. I have a similar problem as Estelle (4/5/2008). Check engine light came on recently. Diagnostics came back with codes 700 & 740. Seems to be running fine (I drove back from NYC to Philly). Have set up an appointment with Cottman Transmission for next week. Is it safe to drive it until then?  Thanks.

Answer
Hi Mark,
No problem with further driving of it. That code says there is a problem with the torque converter lock-up routine and so it may not give you that slight extra efficiency and braking ability when it is still unlocked at speeds above 45 mph. It could be due to a problem with the torque converter or the fluid pump's bushing is wearing. Nothing will be harmed by driving with the 740 code and you would be aware if there were by it then going into limp-mode (drives in 2nd gear only) which means there is a second code which does need to be addressed. I would wait to deal with this if the only solution is the torque converter/pump replacement until something requiring a rebuild appears and then it can be repaired when the trans is out of the vehicle already. There is no simple electrical solution so the trans shop may well not be worth asking if there is a charge for asking/diagnostic.
Roland

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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.

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

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

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Degrees in Physics/bruised knuckles.

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"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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