Thank you for coming back to me. I did check the trans fluid yesterday and it was full, clear, red. I also check the engine oil, clearish and brown - no burning. The fuel pump was changed 18 months ago with a new one. The mileage is 154000. At the same time the fuel pump was changed, it had a new coil and spark plug wires, new plugs, air filter, and wiper motor.
I do not have a plug in diagnostic as I am in the United KIngdom. There are Jeep and Dodge dealers around for the UK sales but I don't know if they can help on a vehicle this old. Advice? I do use the on board computer system and I have a 1989 full service manual. The latest codes are:
17 Thermostat which I have a replacement for
There is an ABS light on in the truck and Maint Req light. Looking in the manual, the Maint Req could be triggered by the EGR having problems.
Yesterday, I noticed a slight leak around the battery which I will change this weekend. It has a new muffler, cat convertor, the air line from the pump is properly connected. Everything works
It has been running brilliantly until a few days ago and it seems to struggle to keep running. It idles with an occasional surge (five to ten seconds - very slight) and then cuts back. Sometimes, it just stops running.
Parts can be bought from the States but there is more than a 100% mark-up on duty and taxes so I have to make it worth my while and be correct when I buy them.
Thank you for the information and the excellent response. I am not at the house for a few days but on my return Saturday, I will check the things you mentioned and see if there is an improvement. I would like to stay in touch with you so there is a consistency in the progress. let me know if that is god for you.