[wrestlerobx]

I have a completely stock 95 ZJ V6 4.0L. when i first bought it it stalled on me when i would turn. to fix the problem i simply put gas treatment in the jeep hopeing that was all it was. WEll it worked the first time and then my CV joint broke and my a/c clutch had to be replaced. the jeep sat for three weeks and i just got it back and i also got more problems. It seems that when i turn in drive with no accellaration it stalls and cuts off, but thats not all when i put it in neutral it limits the stalling and also reverse but it does not stop it all together


ANY thoughts on what it could be would be helpful
thanks in advance

[kmd1776]

first off, its a straight 6, not a v6...

well lets start basic, when was the last time you had air filter, fuel filter, spark plugs, wires, cap and rotor changed? it sounds like you havent had it too long, and if so, it might be a good idea to start with a complete tune up and see how that goes.... get the obvious out of the way so we can help narrow it down if its anything besides that

[wrestlerobx]

ok cool but why would it only do it in drive...anyone with an idea

btw i have already changed fuel filter and air filter

[kmd1776]

if your idling... does it stall, or only idling in drive??

it sounds like it could be a bad or dirty IAC, but usually it happens when idling in park or drive. it could also be a mixture between IAC and needing some spark plugs, cap, rotor, and wires.

[wrestlerobx]

it stalls in all gears but not as common in nuetral or park also it does it mostly after it has run for a while but it is more sporatic than anything

[kmd1776]

ok on your throttle body, yo have an aluminum plate bolted on with 4 torx bolts. off of that plate, you have a computer sensor screwed in there with 2 more torx bolts. that computer sensor is your IAC.

my recommendation..... remove the whole throttle body from the intake manifold, only 4 bolts, then unplug both sensors, IAC and TPS. then remove IAC, wipe it down, get all the carbon build up off it.

then clean the whole throttle body, especially the chamber the IAC sits in, should be filled with black carbon build up. get it all cleaned up and put it all back together... should make a big difference!

[kmd1776]

sounds a little complicated, but its honestly a 15 minute job at most. and this should stop the stalling, but i also am willing to bet your ignition components need a good replacement to help... and itll help you get a couple more MPGs

[wrestlerobx]

sick i appreciate all the advice ill try it tomorrow afternoon and let yall know how it goes

[kmd1776]

not a problem, i got a 95 4.0 also, and i tore the whole top end of that engine apart, and i got the factory service manual, so whenever you need help just let me know

and check out my signature for some pretty easy but effective upgrades to the 4.0.... they work great!

[wrestlerobx]

will do

[graffix000]

Originally Posted by wrestlerobx

will do

You received good advice above. In addition to the throttle body cleaning, replace all of the ignition parts (plugs, wires, distributor cap, rotor). The parts are dirt cheap online and it will help. I had a random stalling problem, and it was resolved once I gave it a full tune up.

[wrestlerobx]

cleaning of the IAC helped out but the problem is not completely gone so im gonna get everything i can replaced on it that is listed i appreciate all the advice

[kmd1776]

well it seems like its not one big problem, then rather just a bunch of small, easier problems.

im sure after you do spark plugs, cap, rotor, and wires, you should be good.

remember spark plug gapping on the 4.0 is .035". most people here will tell you to get the standard champion copper spark plugs, as they seem to work the best, no need for high performance plugs.

[wrestlerobx]

last night i pulled the spark plugs and they have gone to **** so im doing that today after work or or tomorrow after school...also should i order the distributor cap or just get it at napa

[IslandManMitch]

Fuel Filter.