Many of Chrysler's woes from the late 80's and ninties comes from their inbreeding with Mitsubishi...a company that builds great TV's but can't seem to build an engine that's worth anything. An older friend of mine said that Mitsubishi built the airplanes Kamikaze pilots flew, and they only had to last a few thousand miles to make it across the ocean to crash into an unsuspecting boat. Mitsubishi apparently still uses the same design criteria to this day in their automobile manufacturing!!!
The infamous 2.7 liter V6 you mention of Chad, along with it's predecessor, the 3.0 V6 that made it into just about everything they build all have the same issues with bad cylinder head castings. In these engines, not only do the head gaskets start leaking, but the valve guides wear out, camshafts grind themselves down to nothing, and if your engine runs long enough through those issues, chances are your main bearings will take a crap too! The problem also invaded their 2.4 liter 4-banger made by Mitsubishi too. The odd thing about this is that while Chrysler got a black eye over these POS engines, just about every automotive publication (Especially Consumer Reports!!!) remained totally hush-hush over the fact that it affected genuine Mitsubishi vehicles too!
Chrysler at least used a little brains and designed their own V6, the 3.3 liter an 3.9 liter engines, which proved to be great engines, and "rescued" sales of the minivans that were tarnished by that Mitsubishi disaster. Unfortunatley, they did not learn enough from their mistake and guess what! They are back to using Mitsubishi S**T in their small cars again. The Neons, PT cruisers, and Calibers are all using Mitsubishi mechanicals again AAARRGH!!!
Now, for all you folks getting issues with your electronically controlled transmission, they are the result of a little $50 part on the front of your engine, that for some reason has not been redesigned! It's the crankshaft position sensor, and it tells the computer how fast the engine is turning. along with all sorts of other vital info. It's an optical device that relies on an infrared beam that's broken by a slotted disc in the harmonic balancer. When the optical sensor gets dirty after the front seal seeps a little bit and road dust gets in there, it will give odd RPM readings to the computer, causing the transmission to shift erratically. Most people just blame the transmission, and most 3rd party repair shops intent on selling transmissions versus making true repairs (AAMCO) use this issue to screw customers out of transmissions. Now, if the problem is not caught soon enough yes, it will cause damage to the transmission, but ususally before that time, the problem will also mainfest itself as "Check Engine" lights and stumbling/hesitation, and bad mileage because the engine's timing is off too.
One of the things I cannot figure out is why Chrysler is trying to rid itself of any and all American Motor designs! This is like killing a goose that's laying golden eggs! You mentioned that you didn't know why the Grand Cherokee's were so popular, but it all comes back to the fact that the original Grand Cherokee design was actually an AMC design that was in gestation prior to Chrysler buying them out. AMC vehicles were typically very well designed vehicles. Obviously too, the original Cherokee (replaced by the Liberty) was also an AMC design, along with the Wrangler that just also recently received a makeover. One of AMC and Chrysler's best engines was the old 4.0 liter straight 6. A very torquey, reliable engine that powered all the AMC-Jeep derived vehicles. Chrysler has shot itself in the foot by scrapping this engine, and closing the old AMC plant that built them! The new Daimler designed versions of the Grand Cherokee, Wrangler, and Liberty are all convoluted junk compared to their predecessors. For example, the Wrangler has a double-wishbone front suspension, not a beam axle. Hello! This is an off road truck! NOT a family hauler, it doesn't need a cushy ride. I can't wait to see how many of them start breaking front-end parts as soon as owners try to get them to do anything their old CJ's would do! It will not be long before Jeep sales fall of considerably after this mistake!
The infamous 2.7 liter V6 you mention of Chad, along with it's predecessor, the 3.0 V6 that made it into just about everything they build all have the same issues with bad cylinder head castings. In these engines, not only do the head gaskets start leaking, but the valve guides wear out, camshafts grind themselves down to nothing, and if your engine runs long enough through those issues, chances are your main bearings will take a crap too! The problem also invaded their 2.4 liter 4-banger made by Mitsubishi too. The odd thing about this is that while Chrysler got a black eye over these POS engines, just about every automotive publication (Especially Consumer Reports!!!) remained totally hush-hush over the fact that it affected genuine Mitsubishi vehicles too!
Chrysler at least used a little brains and designed their own V6, the 3.3 liter an 3.9 liter engines, which proved to be great engines, and "rescued" sales of the minivans that were tarnished by that Mitsubishi disaster. Unfortunatley, they did not learn enough from their mistake and guess what! They are back to using Mitsubishi S**T in their small cars again. The Neons, PT cruisers, and Calibers are all using Mitsubishi mechanicals again AAARRGH!!!
Now, for all you folks getting issues with your electronically controlled transmission, they are the result of a little $50 part on the front of your engine, that for some reason has not been redesigned! It's the crankshaft position sensor, and it tells the computer how fast the engine is turning. along with all sorts of other vital info. It's an optical device that relies on an infrared beam that's broken by a slotted disc in the harmonic balancer. When the optical sensor gets dirty after the front seal seeps a little bit and road dust gets in there, it will give odd RPM readings to the computer, causing the transmission to shift erratically. Most people just blame the transmission, and most 3rd party repair shops intent on selling transmissions versus making true repairs (AAMCO) use this issue to screw customers out of transmissions. Now, if the problem is not caught soon enough yes, it will cause damage to the transmission, but ususally before that time, the problem will also mainfest itself as "Check Engine" lights and stumbling/hesitation, and bad mileage because the engine's timing is off too.
One of the things I cannot figure out is why Chrysler is trying to rid itself of any and all American Motor designs! This is like killing a goose that's laying golden eggs! You mentioned that you didn't know why the Grand Cherokee's were so popular, but it all comes back to the fact that the original Grand Cherokee design was actually an AMC design that was in gestation prior to Chrysler buying them out. AMC vehicles were typically very well designed vehicles. Obviously too, the original Cherokee (replaced by the Liberty) was also an AMC design, along with the Wrangler that just also recently received a makeover. One of AMC and Chrysler's best engines was the old 4.0 liter straight 6. A very torquey, reliable engine that powered all the AMC-Jeep derived vehicles. Chrysler has shot itself in the foot by scrapping this engine, and closing the old AMC plant that built them! The new Daimler designed versions of the Grand Cherokee, Wrangler, and Liberty are all convoluted junk compared to their predecessors. For example, the Wrangler has a double-wishbone front suspension, not a beam axle. Hello! This is an off road truck! NOT a family hauler, it doesn't need a cushy ride. I can't wait to see how many of them start breaking front-end parts as soon as owners try to get them to do anything their old CJ's would do! It will not be long before Jeep sales fall of considerably after this mistake!