Have a question for a friend...

[bigblock73]

I had this gentleman E-mail me at my 73-87.com address, and he had a question that I cannot provide an answer for. Can any of you help?

I am going to e-mail him this link, hopefully someone here will have some ideas and provide him his answers. Thanks

Good day to you Jeff.. My name is Roger and I am writing to you to see if you know of this problem happening to anyone else. ( I will try not to ramble on too much ) . I have owned this 87 GMC Wrangler pick-up for 3 years now, had a very hard time passing the E-Test this year and 2 years ago.The problem with this truck is fuel milage--- 85 percent of the time I am getting between 5 and 6 km/litre. Every now and then after I hit a nasty bump or a very rough set of RR tracks, my fuel milage will jump up to 8 or 9 km/litre ??? We have scoped the system and cannot find the problem, changed sencors, changed the computer, even said a little prayer but to no avail !!! My wife and I do a lot of camping and quading. This involves carrying a 500 Polaris and our gear in the truck and pulling a 17 ft house trailer through some very hilly terrain.( Parry Sound , Ontario ) On our latest trip , I was getting 7.7 km/ litre. Pretty good , and then we hit the RR tracks in a small town and there went the milage !!! Down to 4.5 for the rest of the trip... I constantly monitor my milage as you can see. ( Note--- when getting the good milage , the truck does not run any hotter then normal ? ) Strange But True . If you have ever heard of this before or know of a cure , I would sure be happy to hear from you !! P.S. I have only gotten part way through your web-site so far and I have to say that you are doing a very good job with it !! Take care , maybe we will talk later , Roger , from Woodstock , Ontario , Canada..---