Infamous stalling problem identified, temporary cure 1997 grand Cherokee - Page 11 - JeepForum.com
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post #151 of 888 Old 02-11-2011, 12:05 PM
ZeeJay1997
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Quote:
Originally Posted by coralman View Post
I'm guessing since the black and white plug have more to do with fuel and ignition is why he chose those two.
Yes, that's true. Maybe EMI is why the cruise takes three tries to engage?? Mine always engages on the first try after i disconnect the battery terminals, then after a while, it takes multiple attempts.



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post #152 of 888 Old 02-11-2011, 12:14 PM
GuitarJer
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Originally Posted by ZeeJay1997 View Post
With the chokes, if the plug wires start leaking, nobody dies because the thing stalls out while crossing a 4 lane or in the fast lane of the interstate during rush hour.
Prayed so hard about this! God gets the credit if this turns out to be a good and useful thing. I'm not a fanatic, but seeing the look of panic in that woman who owns the 98 GC...
Anyway, its early and who knows if it will work long term? I make no guarantee about any of it, simply cause I don't know.
The mix of the ferrite/ferrous material might make a difference. Some engineeers say 31 mix is best for widespread suppression. Also placement. Lots of variables, you know?
I used RadioShack pn 273-105 for the dist. and pn 273-104 for the connectors to pcm. About $15 or so. Slide right up as close as possible to connectors. Slide close to dist. as possible. Shack gives no spec. for the mix that I can find. Simply tried these b/c I could eyeball them for size and didn't want to order from online comp. without trying first. Snap on, maybe some elec. tape to hold in place if moving too much. Thats it.

I set up to try this way on the 98 (thinking that the plug wires, rotor, and cap were probably bad-you should see them) to see how the chokes would react.

ZeeJay1997, your test and results were the tipoff. Chokes went on connectors (from what you guys posted?) that control most engine and trans. function. The choke on the dist. was b/c of its proximity to the plug wires/dist/coil/alt.

I checked with several manufacturers first to see that they wouldn't damage any components. I hope they are right. Seems lots of guys have been using these on fuel inj. wires and other places for years with good results.

ZeeJay, Coralman, Flyboy161, and all you guys get lots of props!!!!!!! Zee gets much credit for establishing a good base line with his ignition! Thanks for your patience for the comparison Zee.

Its still early, so I'm not overly convinced by any means. Don't want to jump gun.

"Sharif don't like it...Rock the Casbah!"
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post #153 of 888 Old 02-11-2011, 02:15 PM
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Originally Posted by ZeeJay1997 View Post
Yes, that's true. Maybe EMI is why the cruise takes three tries to engage?? Mine always engages on the first try after i disconnect the battery terminals, then after a while, it takes multiple attempts.
Now this is just weird Zee. I also have been having issues with my cruise control on/off switch. I just figured it was a dirty switch in the steering wheel or perhaps the clockspring. More often than not it takes two or three pushes of the switch to turn the system on.

Owning a jeep is like raising a rebellious teenager: the more you love it and nurture it and buy nice things for it, the more it says, "screw you! I'm doing drugs and drinking because I hate you!"
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post #154 of 888 Old 02-11-2011, 02:20 PM
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Thanks guitarjer for your kind words but truthfully I feel that this is a group effort. I know Coralman, ZeeJay, myetball, guitarjer, and all others whose time and knowledge and troubleshooting this issue has helped me a great deal. Keep it up all! Thanks

Owning a jeep is like raising a rebellious teenager: the more you love it and nurture it and buy nice things for it, the more it says, "screw you! I'm doing drugs and drinking because I hate you!"
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post #155 of 888 Old 02-11-2011, 02:27 PM
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Some pics would be nice! I looked them up at radio shack and they look like snap on type affairs. Is that the ones you used? What is the difference between a bead and a choke? Knock on wood {so please jeep gods don't make an example of me} mine has been purring since the spark plug wires and pcm replacement.


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post #156 of 888 Old 02-11-2011, 02:29 PM
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By the way 21 days and no hiccups wit the radiator clamp around the PCM connectors

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post #157 of 888 Old 02-11-2011, 02:31 PM
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Now this is just weird Zee.
More of the JTEC Voodoo , which may be deciphered as EMI and old age.


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post #158 of 888 Old 02-11-2011, 02:54 PM
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I'm telling you guys it was the popcorn. The purpose of this forum is to help each other, and I think it does an excellent job of that. Thanks for including me in the thanks.
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post #159 of 888 Old 02-11-2011, 03:00 PM
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Oh and by the way if you punch up ferrite choke on yahoo search it gives a wikipedia link. On that link it shows a 64bit memory chip surrounded by ferrite beads. Isn't that interesting?
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post #160 of 888 Old 02-18-2011, 08:55 AM
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Just an update on the 98 GC: two weeks and no hiccups or stalling. No changes to the system.

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post #161 of 888 Old 02-18-2011, 09:25 AM
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Originally Posted by GuitarJer
Just an update on the 98 GC: two weeks and no hiccups or stalling. No changes to the system.
That's awesome.

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post #162 of 888 Old 02-18-2011, 05:58 PM
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Those chokes may be the ticket. Mine had one hiccup in 800 miles of stop and go commuting in the last two weeks.


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post #163 of 888 Old 02-18-2011, 06:17 PM
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I gotta get me some too. No hiccups since the wires but I'm getting them anyways. Now if I can avoid the allure of the interior parts I've found lately maybe I can get my exhaust bought. Zee, I figure you would know the answer to this one. Why would magnaflow stop the listing for 4.0 grands at 97 for the catback exhaust? Visually the bends and hangers look the same. Pretty sure the muffler dimensions are the same.
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post #164 of 888 Old 02-18-2011, 06:19 PM
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I forgot to ask, did the chokes take care of the cruise issues?
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post #165 of 888 Old 02-18-2011, 06:25 PM
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Why would magnaflow stop the listing for 4.0 grands at 97 for the catback exhaust? Visually the bends and hangers look the same. Pretty sure the muffler dimensions are the same.
Glad you didnt bet any money on that. I'm all about "if it ain't broke dont fix it", so I haven't looked into replacement. The muffler shop that put my cat on a couple of weeks ago said the muffler and tail pipe will last a few more years.


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