Been upgrading my 'new' 96 Disco. Expensive day today...put on 4 new tires, new spark plugs, new MAF sensor, new thermostat, added coolant, and transmission fluid and a new air filter. So after all that, I take off and the engine begins to hesitate as I accelerate and continues to do so as I drive around. One item of note is there was no air filter in the housing previously. So I take the air filter out and engine is working fine again. Clearly, the filter is preventing enough air from passing through the MAF and causing the engine to hesitate. Has anybody had this happen before and/or know how it can be fixed as I don't want to keep driving around without an air filter. Thanks!

 

How does the MAF look?

If its been running no filter I would take off the MAF, boot, clean MAF with special cleaner and clean throttle body good, remove IACV also and clean, no telling what's got in there, a scanner might help also see what sensor is saying what

How is the fuel pressure reg vacume hose?

Get used to spending money for a while these are usually very neglected in the maintenance dept

Buy an ultra gauge

 

The MAF I just bought brand new so that shouldn't be the issue. . No idea about fuel pressure or the IACV. On the air filter housing there is an extension that protrudes out the front...looks like a large spout almost. Is that for air intake into the filter? Reason I ask is there must have been a small fire in the engine compartment at some point and the fiberglass spout melted/warped and is mostly closed now. Could that be the issue? Thanks

 

It doesn't help. Though I would think it would cause loss of power across the whole band, not just hesitation upon acceleration.

Just yank that trumpet thing right off, the larger opening helps regardless

 

That trumpets remove able , remove it by force its glued, don't really need it might be the entire problem

 

Trumpet removed and all is well! Very thankful for such an easy fix! Now on to the fuel filter. Old one is completely rusted on....took it to jiffy lube to see if they could get it off with no luck. They said I'd need to replace the whole fuel line but going to cut and couple it instead. Hopefully that will do the trick!

 

OK this is easy

Cut rubber hoses

Cut metal crimps on hoses to metal line

Remove hose from metal line

Go to store buy GM type filter with nipples and fuel inject hose and fuel inject clamps, reassemble

The filters are on the show floor in auto zone there are 2 don't recall which one

 

I picked up one of those Atlantic British kits from a guy for cheap.
These are the same filter they provide in the kit.

 

Yeah they sell 2 different ones with nipples, only difference is the diameter of hose used

 

Thanks guys! Fuel filter replaced....can tell the difference immediately! Must have been the original filter on there from 1996 it was so rusted and clogged!