Before I do it, are you sure this is the problem? Anyone else want to chime in?

 

Do it anyways for peace of mind...

 

fuel injectors?
i thought mine needed a tune up, did everything and made no difference.
twisted the fuel injectors to find a leaky one. swapped out with 703 injectors and all is good.

 

Before you do anything get those Bosch plugs out of there and get some champion plugs. I just had the same problems with my daughters 96 Cutlass Supreme with 51K miles. Did a tune up and ran like crap. Shook bad, would not go 60MPH, hills were impossible. I replaced the fuel filter, wires and plugs at the same time. I decided to put her stock AC Delco plugs back in and the problem was gone. Also my Bosch plugs were made in Russia if that had anything to do with it. Cheap mistake but never again. Not the first time I have seen new Bosch plugs fail.

 

exactly...its a 88...

 

The fuel pump noise is pissing me off and people can hear it from outside my rig when I drive into the driveway - I'll just go ahead and do it, and get new plugs while I'm at it. The thing was running just fine after the new plugs (before the other tuneup stuff). But then, of course, 300 something miles from home, it starts acting up. Would it be normal that plugs would turn bad after almost 1,000 miles on them?

BTW. Since I have an 88 and don't understand it, what is the reason behind mentioning that it's an 88, like an inside joke? Are they notorious for bad pumps?

 

They are saying since it is an 88 that it is old and the pump could possibly be original so replace it so its one less thing needed later when you run into a future problem.

 

Thanks. Heading to Napa now.

 

So why did you go with plugs that have the reputation to NOT WORK in a Jeep?

OK, I know, -- the 16 year old at Autozone suggested them because he makes a 25 cent commission on Bosch.

Obviously he knows more than the engineers do that designed it and put the plugs to use on the underhood label.

Since you've been driving it and it's become progressively worse - When putting in the correct plugs, shine a light down each cylinder to check for melted pistons - a very real possibility now.

 

I didnt see where you confirmed you gapped the plugs right. Other than that I agree, fuel pump and possibly injectors.

 

The reason they worked at first was they were clean and new. Being the wrong heat range caused them to burn improperly, and possibly caused internal damage to your pistons/valves/ rings etc.


Bosch uses the idea of "one size fits all" - ask your wife how that works for her.
Just because they fit in the hole and work fine in a Yugo or Moskovich, doesn't mean they'll work in a JEEP.

Bosch - HITLER'S REVENGE.

 

Interesting - replacing plugs causes the fuel pump amd injectors to go bad? It's a good thing he didn't wash it at the same time - he avoided transmission troubles that way.

 

Replaced the pump - the thing is still whiney a bit, but I took it on the freeway fast enough and it's not doing that anymore. By the way, napa had it for 80$ and nothing called "Whole assembly", although, it had everything I think that I needed. I looked at the new one, it was "Carter" brand. Well, turns out the other was the same exact type.

Next step, take out Bosch and get Champion plugs I guess?

I had no clue. Guy at Autozone recommended them - hope there is no damage.

 

.035

 

This sounds right, correct?
http://www.ebay.com/itm/Champion-Cop...98f640&vxp=mtr

I'll see if the auto parts store in town has it, too, if that's the one.