Tune up...or somethin headac

[ranch]

i have a 91 with a 4.0 and it has lost a lot of power tops out at like 60 i replaced the plugs wires fuel filter....now it wants to die at stops i bought it for cheap and had to replace a fuel filter to get it to fire all 6 cyl but i could use some advice as what to do next :roll:

 

[BIG HVM]

check the air filter first mate, then the plugs, warning the plugs are very awkward to get to and you will need patience. Thread them back in by hand and back them off and try again if they dont go in smooth, a little copper ease helps with this and will ensure that they are not seized whenn you need to take them out again. last thing clean the maf sensor and then reset by unhooking batt for half our, have radio code ready or you will loose that if you unhook batt.- Good luck!

 

[MrShorty]

I would also run the EEC-IV self-tests (www.dalidesign.com/hbook/eectest.html) and a fuel pressure test.
Dirty IAC may be the reason it wants to stall at idle. Throttle body might also be dirty.

 

[ranch]

i changed 5 plugs wires but i cant get the one one on back left side air cond. is in the way is there any tricks?

 

[Pissant22]

It just takes a little time, I had to even get under my truck by the wheel well and go through that way. I had a friend over the top and between us we managed to get it threaded on, so basically just contorting your arm till you find somethin that works.

 

[ranch]

i was afraid u were gonna say that......ok today i put a new battery cuz the other one wasent holding a charge but i would start it then i noticed that as soon as the ac (the part that spins sometimes with the belt and othertimes not) would kick on and it would start missing worse so i unpluged it and it still misses at everystop it would kill and i would have to give it gas to keep it goin in to drive i'm starting to think that its the coil pack. is there any ways to tell?

 

[bobbm1]

Stupid question... you didn't cross any of the plug wires did you?

 

[ranch]

no i didn't but why is that a stupid question

 

[bobbm1]

it's not really...did it myself and it acted the same as what yours is doing

 

[bobbm1]

Hey I just saw you are from Charles City IA...Is Bill Cavanaugh still sheriff there? He is my step brother, haven't talked to him in years.

 

[liqhx2]

check your fuel pressure regulator unplug the vacum line and see if gas is spurting out

 

[ranch]

no rick linch is the sheriff now sorry man