Changing the in tank fuel pump is defiantly a pleasure when the tank is 1/2 full of gas ! :-(


But it is a lot easier on the caprice ( tank located behind the rear axle ) than on the Lumina ( tank forward of the rear axle ) .


And it does not help when you are an old fat man & barely fit under the car , even jacked up ! :-(


Just be safe & support the care , secure and carefully on jack stands . And chock the front wheels .


God bless
Wyr

 

I had a hesitation problem with an 89 I just bought, I changed the coolant temp sensor, fuel filter and then the MAP sensor.
I bought the MAP sensor at the salvage yard for $30 and it fixed my problem.
I had hesitation all the way through acceleration but it was much more noticeable in the higher gears.
Upon checking my PCV valve I could see signifiacant signs of sludge, I changed that and added some sludge remover to the oil whaile having an oil change done, I'm leaving on a 240 mile round trip tomorrow and I'll be checking the oil to see how dirty it has got whae I return, I expect it to get dirty quick if the sludge remover is doing it's job and will probably have to be changed earlier than usual.

Although a fuel pressure test could answer a few questions for you as well, unfortunately it is a process of elimination and I was lucky enough to get a result by going through a few of the cheaper and simpler possible fixes.

Good luck with your problem

 

LastTycoon, most sludge removers should only be in the engine a short time, they contain some harsh chemicals that will wash out your bearings quick if left in too long. Most of the stuff on my shelf states no more than 5-10 min in a running engine.