97 TJ cuts out

[blair01]

1040653

My 97 TJ has been cutting out for 2 years now. It happens usually at a cruising speed, but has happened on take off. The strange thing is it only happens when the outside temp is at least 80 degrees. In the winter I have no problems. The dealer service thinks I'm nuts, because anytime I take it in, it won't cut out for them. Any suggestions would be appreciated!!

[addsig]

 

[Lerie]

1040664

I had the exact same problem and my mechanic thought I was nuts too. Fortunately, he did some research and found that there were some problems with the material that the gas tanks were made out of. When it gets hot the bottom of the tank gets sucked up and the gas then falls to either side of the tank. Then, then pump that is in the tank overheats and cuts out. I had the entire gas tank replaced along with the pump (its not the fuel pump, but I'm not sure what it's called) and my 98 TJ has never had another problem! Hope this helps!!!

[addsig]

 

[Jeeppicus]

1040670

I've been having similar problems with my 97 TJ. How long would it take for your Jeep to start back up agian?[addsig]

 

[Lerie]

1040675

Most of the time when it cut out I would be stuck on the side of the highway. After letting it sit for a couple minutes I could get it to go a few blocks and then it would cut out again. So, it would take me about 30 min. to go three miles. I would always stop at the nearest gas station and fill it up and that made it happy enough to get me home. When I would drive it the next morning it would be fine. I'm not sure how much it costs to replace the whole gas tank because I had just bought the jeep and the dealership fixed it for me for free. However, my mechanic said he read that it was a problem in many TJs, so it's worth a try if it's not super spendy. It is so much nicer to know that you can go on a road trip and not end up stalled somewhere![addsig]

 

[rayzed]

1040776

I also have a 97 TJ that cuts out on the freeway. It only happens after about an hour or so of driving, and when i pull up the computer code it simply says misfiring cylinder. When i let it sit for a while and go to drive again it is fine for a bit, but after a few miles it either stalls or runs extremely rough again. If i go to replace the gas tank, is there a certain material to watch out for, or will all the new gas tanks i buy be different then the stock ones? Thanks[addsig]

 

[Lerie]

1040845

I'm not exactly sure what the bad material was. All new gas tanks should have the good stuff since this only affected 97 and 98 TJs. (Assuming they don't swap in an old tank!)[addsig]

 

[rayzed]

1040865

Ok, I finally figured out what the problem was with my engine cutting out. The other day i was driving and not only did it cut out, but it would only turn over and would not start at all. No gas gauge, codes or anything. Initially i believed it to be a blown computer

Well come to find out, the wires to the crankshaft position sensor had somehow melted to the manifold therefore shorting out the whole deal. As soon as they were repaired and a new crank sensor was put in it has run great. I am almost positive this is what was causing the intermittent problems...as the wires bounced around they would sporadically hit each other and temporarily short the system, until they finally just completely melted together. I don't know if this was a single incident or a design flaw in the TJ, but it might be something worth checking out if you still have problems with the engine cutting out.[addsig]

 

[blair01]

1041499

Finally a dealer mechanic checked the fuel pressure. The fuel pump wasn't working adequately. Had the new pump installed and runs perfect![addsig]