Last post on Nov 05, 2013 at 12:21 AM
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#1377 of 1888 Engine Performance problem with my 1998 Jeep Wrangler
Oct 01, 2008 (7:31 am)
My 98 Wrangler Sahara has an ongoing intermittent problem with the engine coughing and loosing power as I am driving it along. It can drive fine for days then on another journey it coughs, clonks and looses power. It has been investigated by my local garage but they cannot find the fault. Its had new plugs, leads, IAC and TPS but its still playing up.
In 2000 it had a new oxygen sensor fitted at the time it seemed to be having similar problems and this cured it (on an old invoice we got with the car) is this likely to have gone again and be causing this problem?
#1378 of 1888 Re: Engine Performance problem with my 1998 Jeep Wrangler [kategaunt]
Oct 01, 2008 (9:00 am)
#1379 of 1888 4WD Low will not engage
Oct 01, 2008 (1:21 pm)
I have a 2004 Wrangler Sahara edition with a 3 inch suspension lift. Ever since the lift was put on 4wd low will not ngage i can pull the lever up as far as it will go and the light will come on but once i release it will go out and it will be in neutral. what do i need to do to fix this?
#1380 of 1888 Re: 4WD Low will not engage [alexblaine19]
Oct 02, 2008 (5:03 am)
Suspension lift will not cause that problem generally. Did you do a body lift at the same time? If so, a motor lift would be good, OR you can get longer connectors so your transfer case linkages will reach.
I believe Skyjackers makes a setup. I have a Tuffy console with more room to lift the cable, but I also did a body AND motor lift so the relative change is minor.
Again, suspension lifts raise EVERYTHING, so unless your driveshafts are having issues, the suspension lift would not cause it.
#1381 of 1888 How do I disconnect the a/c compressor on 97 Jeep Wrangler?
Oct 09, 2008 (8:45 pm)
I believe the bearings are going out of my a/c compressor. I don't have the money to replace the compressor right now. How do I disconnect the compressor so that I can still drive?
Than you for any advice.
#1382 of 1888 Re: How do I disconnect the a/c compressor on 97 Jeep Wrangler? [jeepgrl62]
Oct 10, 2008 (6:00 am)
The a/c compressor is effectively in two parts, the compressor itself and the belt driven pulley on the front. The pulley contains an electromagnetic clutch, so that unless an a/c setting is selected on the HVAC controls, the clutch will remain disengaged and the pulley will spin freely without turning the compressor.
So, the short answer is never to select the a/c position on the controls.
However, if for some reason you want to bypass the compressor completely you'll need a shorter serpentine belt. If I was doing that I'd start by checking out the belt and routing that's used on the non-a/c equipped '97 with whatever size engine you have. You should also disconnect the electrical connector for the a/c clutch (just follow the wires from the pulley).
#1383 of 1888 Re: How do I disconnect the a/c compressor on 97 Jeep Wrangler? [mac24]
Oct 10, 2008 (11:03 am)
Thank you for the advice, although, it's possible the noise may not be coming from the a/c compressor at all. I'm lost. There is a whistling noise coming from somewhere. I thought it was the a/c compressor. Maybe it's not. How do I find out exactly where it is coming from without going to a repair shop?
#1384 of 1888 Re: How do I disconnect the a/c compressor on 97 Jeep Wrangler? [jeepgrl62]
Oct 10, 2008 (1:33 pm)
I find it hard to imagine that any reputable repair shop will charge you for lifting the hood and telling you where the whistling noise is coming from.
Most whistling noises track down to a vacuum leak, though it could also easily be a bearing.
Take your life in your hands and try a local independent shop. Just ask what the noise might be and what it might cost to fix. If you're really doubtful, ask what they charge for a quick look and listen. I can almost guarantee it won't cost you more than a smile.
#1385 of 1888 Re: Engine Performance problem with my 1998 Jeep Wrangler [kategaunt]
Oct 13, 2008 (9:33 am)
kategaunt, your problem describes exactly a resolved problem with my '97 sport. It turned out that there was play in the distributor (not the cap) The play affected the timing. For example, when I went up an incline at high speed and gear and hit a small bump the car would "cough" and loose power. I went to the dealer spent about $425 ($200 for the new distributor) and now it runs perfectly (knock on wood). - R
#1386 of 1888 Re: Engine Performance problem with my 1998 Jeep Wrangler [rolfc]
Oct 15, 2008 (5:14 am)
Are we talking about an electronic whine in the speakers or a high pitched sucking sound? The only sucking sound mine makes is the gas tank draining when running uphill with 33's.
A squeal is likely bearing or other rotational rub (axles perhaps). A high pitched whistle would indicate a vacuum leak like Mac said. There are a LOT of ways to interpret your 'noise'.
An independent may be able to help and save you lotsa $$. The Jeep is NOT an overly complex vehicle to work on. Even *I* can do it!