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-   -   Testing Ignition Module on 88 XJ (https://www.jeepscanada.com/jeep-mailing-list-32/testing-ignition-module-88-xj-4942/)

happy jeeper 09-23-2003 09:21 PM

Re: Testing Ignition Module on 88 XJ
 
I know NAPA does the test for free from experience first hand.

--
MATT

O, it is excellent to have a giant's strength; but it is tyrannous to use it
like a giant.

"Mike Romain" <romainm@sympatico.ca> wrote in message
news:3F70CC65.39A43EB6@sympatico.ca...
> Rich wrote:
> >
> > L.W.(ßill) ------ III <----------@cox.net> wrote in message

news:<3F706836.52DB8946@cox.net>...
> > > Make sure your fuel pump is still working, hot, most have been
> > > replaced by your year. My test is just to listen for it running, turn
> > > the ignition on, and before cranking it should run for about five
> > > seconds before it automatically shuts off. Or test the fuel rail for
> > > about forty pounds.
> > > God Bless America, ßill O|||||||O
> > > mailto:-------------------- http://www.----------.com/
> > >
> > > noone@yahoo.com wrote:
> > > >
> > > > I've got a hot stalling problem on my 88 XJ.
> > > >
> > > > The Jeep runs perfectly most of the time, however after several "hot

soaks"
> > > > (eg, my wife out shopping), or driven for several miles on the

freeway with
> > > > the A/C on the engine just quits while driving down the road.
> > > >
> > > > I first suspected the notorious Crank Position Sensor, which I

replaced
> > > > last week. No joy. Had to have the Jeep towed home last weekend.

(Wife
> > > > not happy).
> > > >
> > > > I've gone over the ALL the connections in the engine compartment,

cleaned,
> > > > inspected and even tightened the female connections on those that

looked
> > > > loose. All the grounds and battery cables have been cleaned.
> > > >
> > > > So now I suspect that the ignition control module is the culprit.

Before I
> > > > spend $150.00 on a replacement I'd like to know if there is a way to

test
> > > > the existing module?
> > > >
> > > > Any advice you could give me would be appreciated.
> > > >
> > > > Dave in Columbus

> >
> > I just had that happen to me I found a parts store that could test
> > mine I have a 85 XJ 2.8 and a new one was $39 Its been fine for two
> > months now..
> > 85XJ
> > 86XJ 3'lift
> > 85 4x4 chev trk

>
> What flavor of parts store?
>
> Mike
> 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> 88 Cherokee 235 BFG AT's




Mike Romain 09-23-2003 09:27 PM

Re: Testing Ignition Module on 88 XJ
 
Cool, I am going to phone a local one and ask them, thanks.

Mike

happy jeeper wrote:
>
> I know NAPA does the test for free from experience first hand.
>
> --
> MATT
>
> O, it is excellent to have a giant's strength; but it is tyrannous to use it
> like a giant.
>
> "Mike Romain" <romainm@sympatico.ca> wrote in message
> news:3F70CC65.39A43EB6@sympatico.ca...
> > Rich wrote:
> > >
> > > L.W.(ßill) ------ III <----------@cox.net> wrote in message

> news:<3F706836.52DB8946@cox.net>...
> > > > Make sure your fuel pump is still working, hot, most have been
> > > > replaced by your year. My test is just to listen for it running, turn
> > > > the ignition on, and before cranking it should run for about five
> > > > seconds before it automatically shuts off. Or test the fuel rail for
> > > > about forty pounds.
> > > > God Bless America, ßill O|||||||O
> > > > mailto:-------------------- http://www.----------.com/
> > > >
> > > > noone@yahoo.com wrote:
> > > > >
> > > > > I've got a hot stalling problem on my 88 XJ.
> > > > >
> > > > > The Jeep runs perfectly most of the time, however after several "hot

> soaks"
> > > > > (eg, my wife out shopping), or driven for several miles on the

> freeway with
> > > > > the A/C on the engine just quits while driving down the road.
> > > > >
> > > > > I first suspected the notorious Crank Position Sensor, which I

> replaced
> > > > > last week. No joy. Had to have the Jeep towed home last weekend.

> (Wife
> > > > > not happy).
> > > > >
> > > > > I've gone over the ALL the connections in the engine compartment,

> cleaned,
> > > > > inspected and even tightened the female connections on those that

> looked
> > > > > loose. All the grounds and battery cables have been cleaned.
> > > > >
> > > > > So now I suspect that the ignition control module is the culprit.

> Before I
> > > > > spend $150.00 on a replacement I'd like to know if there is a way to

> test
> > > > > the existing module?
> > > > >
> > > > > Any advice you could give me would be appreciated.
> > > > >
> > > > > Dave in Columbus
> > >
> > > I just had that happen to me I found a parts store that could test
> > > mine I have a 85 XJ 2.8 and a new one was $39 Its been fine for two
> > > months now..
> > > 85XJ
> > > 86XJ 3'lift
> > > 85 4x4 chev trk

> >
> > What flavor of parts store?
> >
> > Mike
> > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > 88 Cherokee 235 BFG AT's


Mike Romain 09-23-2003 09:27 PM

Re: Testing Ignition Module on 88 XJ
 
Cool, I am going to phone a local one and ask them, thanks.

Mike

happy jeeper wrote:
>
> I know NAPA does the test for free from experience first hand.
>
> --
> MATT
>
> O, it is excellent to have a giant's strength; but it is tyrannous to use it
> like a giant.
>
> "Mike Romain" <romainm@sympatico.ca> wrote in message
> news:3F70CC65.39A43EB6@sympatico.ca...
> > Rich wrote:
> > >
> > > L.W.(ßill) ------ III <----------@cox.net> wrote in message

> news:<3F706836.52DB8946@cox.net>...
> > > > Make sure your fuel pump is still working, hot, most have been
> > > > replaced by your year. My test is just to listen for it running, turn
> > > > the ignition on, and before cranking it should run for about five
> > > > seconds before it automatically shuts off. Or test the fuel rail for
> > > > about forty pounds.
> > > > God Bless America, ßill O|||||||O
> > > > mailto:-------------------- http://www.----------.com/
> > > >
> > > > noone@yahoo.com wrote:
> > > > >
> > > > > I've got a hot stalling problem on my 88 XJ.
> > > > >
> > > > > The Jeep runs perfectly most of the time, however after several "hot

> soaks"
> > > > > (eg, my wife out shopping), or driven for several miles on the

> freeway with
> > > > > the A/C on the engine just quits while driving down the road.
> > > > >
> > > > > I first suspected the notorious Crank Position Sensor, which I

> replaced
> > > > > last week. No joy. Had to have the Jeep towed home last weekend.

> (Wife
> > > > > not happy).
> > > > >
> > > > > I've gone over the ALL the connections in the engine compartment,

> cleaned,
> > > > > inspected and even tightened the female connections on those that

> looked
> > > > > loose. All the grounds and battery cables have been cleaned.
> > > > >
> > > > > So now I suspect that the ignition control module is the culprit.

> Before I
> > > > > spend $150.00 on a replacement I'd like to know if there is a way to

> test
> > > > > the existing module?
> > > > >
> > > > > Any advice you could give me would be appreciated.
> > > > >
> > > > > Dave in Columbus
> > >
> > > I just had that happen to me I found a parts store that could test
> > > mine I have a 85 XJ 2.8 and a new one was $39 Its been fine for two
> > > months now..
> > > 85XJ
> > > 86XJ 3'lift
> > > 85 4x4 chev trk

> >
> > What flavor of parts store?
> >
> > Mike
> > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > 88 Cherokee 235 BFG AT's


c 09-23-2003 09:59 PM

Re: Testing Ignition Module on 88 XJ
 
Actually, some do and some don't. It's best to call around. Our NAPA here
charges you unless the module is bad and you buy a new one from them.

Chris


"happy jeeper" <jeepr@onthemountain.com> wrote in message
news:Nj6cb.2141$PT3.374335@news20.bellglobal.com.. .
> I know NAPA does the test for free from experience first hand.
>
> --
> MATT
>
> O, it is excellent to have a giant's strength; but it is tyrannous to use

it
> like a giant.
>
> "Mike Romain" <romainm@sympatico.ca> wrote in message
> news:3F70CC65.39A43EB6@sympatico.ca...
> > Rich wrote:
> > >
> > > L.W.(ßill) ------ III <----------@cox.net> wrote in message

> news:<3F706836.52DB8946@cox.net>...
> > > > Make sure your fuel pump is still working, hot, most have been
> > > > replaced by your year. My test is just to listen for it running,

turn
> > > > the ignition on, and before cranking it should run for about five
> > > > seconds before it automatically shuts off. Or test the fuel rail for
> > > > about forty pounds.
> > > > God Bless America, ßill O|||||||O
> > > > mailto:-------------------- http://www.----------.com/
> > > >
> > > > noone@yahoo.com wrote:
> > > > >
> > > > > I've got a hot stalling problem on my 88 XJ.
> > > > >
> > > > > The Jeep runs perfectly most of the time, however after several

"hot
> soaks"
> > > > > (eg, my wife out shopping), or driven for several miles on the

> freeway with
> > > > > the A/C on the engine just quits while driving down the road.
> > > > >
> > > > > I first suspected the notorious Crank Position Sensor, which I

> replaced
> > > > > last week. No joy. Had to have the Jeep towed home last weekend.

> (Wife
> > > > > not happy).
> > > > >
> > > > > I've gone over the ALL the connections in the engine compartment,

> cleaned,
> > > > > inspected and even tightened the female connections on those that

> looked
> > > > > loose. All the grounds and battery cables have been cleaned.
> > > > >
> > > > > So now I suspect that the ignition control module is the culprit.

> Before I
> > > > > spend $150.00 on a replacement I'd like to know if there is a way

to
> test
> > > > > the existing module?
> > > > >
> > > > > Any advice you could give me would be appreciated.
> > > > >
> > > > > Dave in Columbus
> > >
> > > I just had that happen to me I found a parts store that could test
> > > mine I have a 85 XJ 2.8 and a new one was $39 Its been fine for two
> > > months now..
> > > 85XJ
> > > 86XJ 3'lift
> > > 85 4x4 chev trk

> >
> > What flavor of parts store?
> >
> > Mike
> > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > 88 Cherokee 235 BFG AT's

>
>




c 09-23-2003 09:59 PM

Re: Testing Ignition Module on 88 XJ
 
Actually, some do and some don't. It's best to call around. Our NAPA here
charges you unless the module is bad and you buy a new one from them.

Chris


"happy jeeper" <jeepr@onthemountain.com> wrote in message
news:Nj6cb.2141$PT3.374335@news20.bellglobal.com.. .
> I know NAPA does the test for free from experience first hand.
>
> --
> MATT
>
> O, it is excellent to have a giant's strength; but it is tyrannous to use

it
> like a giant.
>
> "Mike Romain" <romainm@sympatico.ca> wrote in message
> news:3F70CC65.39A43EB6@sympatico.ca...
> > Rich wrote:
> > >
> > > L.W.(ßill) ------ III <----------@cox.net> wrote in message

> news:<3F706836.52DB8946@cox.net>...
> > > > Make sure your fuel pump is still working, hot, most have been
> > > > replaced by your year. My test is just to listen for it running,

turn
> > > > the ignition on, and before cranking it should run for about five
> > > > seconds before it automatically shuts off. Or test the fuel rail for
> > > > about forty pounds.
> > > > God Bless America, ßill O|||||||O
> > > > mailto:-------------------- http://www.----------.com/
> > > >
> > > > noone@yahoo.com wrote:
> > > > >
> > > > > I've got a hot stalling problem on my 88 XJ.
> > > > >
> > > > > The Jeep runs perfectly most of the time, however after several

"hot
> soaks"
> > > > > (eg, my wife out shopping), or driven for several miles on the

> freeway with
> > > > > the A/C on the engine just quits while driving down the road.
> > > > >
> > > > > I first suspected the notorious Crank Position Sensor, which I

> replaced
> > > > > last week. No joy. Had to have the Jeep towed home last weekend.

> (Wife
> > > > > not happy).
> > > > >
> > > > > I've gone over the ALL the connections in the engine compartment,

> cleaned,
> > > > > inspected and even tightened the female connections on those that

> looked
> > > > > loose. All the grounds and battery cables have been cleaned.
> > > > >
> > > > > So now I suspect that the ignition control module is the culprit.

> Before I
> > > > > spend $150.00 on a replacement I'd like to know if there is a way

to
> test
> > > > > the existing module?
> > > > >
> > > > > Any advice you could give me would be appreciated.
> > > > >
> > > > > Dave in Columbus
> > >
> > > I just had that happen to me I found a parts store that could test
> > > mine I have a 85 XJ 2.8 and a new one was $39 Its been fine for two
> > > months now..
> > > 85XJ
> > > 86XJ 3'lift
> > > 85 4x4 chev trk

> >
> > What flavor of parts store?
> >
> > Mike
> > 86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
> > 88 Cherokee 235 BFG AT's

>
>




Stephen Cowell 09-23-2003 10:33 PM

Re: Testing Ignition Module on 88 XJ
 

<noone@yahoo.com> wrote in message
news:52m0nvseukcmr4u0trvo3ru7vhah9t72bl@4ax.com...
> I've got a hot stalling problem on my 88 XJ.

....
> Any advice you could give me would be appreciated.


Take a blow dryer (or hot air gun) and heat the
module... if you can get it to fail this way, then
it is the culprit. Or, take some freeze spray
or icewater and cool the module down when
it fails next... if this fixes it, then you should
replace it.
__
Steve
..



Stephen Cowell 09-23-2003 10:33 PM

Re: Testing Ignition Module on 88 XJ
 

<noone@yahoo.com> wrote in message
news:52m0nvseukcmr4u0trvo3ru7vhah9t72bl@4ax.com...
> I've got a hot stalling problem on my 88 XJ.

....
> Any advice you could give me would be appreciated.


Take a blow dryer (or hot air gun) and heat the
module... if you can get it to fail this way, then
it is the culprit. Or, take some freeze spray
or icewater and cool the module down when
it fails next... if this fixes it, then you should
replace it.
__
Steve
..



Kevin in San Diego 09-23-2003 11:15 PM

Re: Testing Ignition Module on 88 XJ
 
My fuel pump relay used to stop working when it was hot. In the 88 you can
just buy all new bosch relays for under the hood. Its cheap and a good idea.
the fuel pump relay is over by the battery and dist. cap.
KH

"L.W. (ßill) ------ III" <----------@cox.net> wrote in message
news:3F706836.52DB8946@cox.net...
> Make sure your fuel pump is still working, hot, most have been
> replaced by your year. My test is just to listen for it running, turn
> the ignition on, and before cranking it should run for about five
> seconds before it automatically shuts off. Or test the fuel rail for
> about forty pounds.
> God Bless America, ßill O|||||||O
> mailto:-------------------- http://www.----------.com/
>
> noone@yahoo.com wrote:
> >
> > I've got a hot stalling problem on my 88 XJ.
> >
> > The Jeep runs perfectly most of the time, however after several "hot

soaks"
> > (eg, my wife out shopping), or driven for several miles on the freeway

with
> > the A/C on the engine just quits while driving down the road.
> >
> > I first suspected the notorious Crank Position Sensor, which I replaced
> > last week. No joy. Had to have the Jeep towed home last weekend.

(Wife
> > not happy).
> >
> > I've gone over the ALL the connections in the engine compartment,

cleaned,
> > inspected and even tightened the female connections on those that looked
> > loose. All the grounds and battery cables have been cleaned.
> >
> > So now I suspect that the ignition control module is the culprit.

Before I
> > spend $150.00 on a replacement I'd like to know if there is a way to

test
> > the existing module?
> >
> > Any advice you could give me would be appreciated.
> >
> > Dave in Columbus




Kevin in San Diego 09-23-2003 11:15 PM

Re: Testing Ignition Module on 88 XJ
 
My fuel pump relay used to stop working when it was hot. In the 88 you can
just buy all new bosch relays for under the hood. Its cheap and a good idea.
the fuel pump relay is over by the battery and dist. cap.
KH

"L.W. (ßill) ------ III" <----------@cox.net> wrote in message
news:3F706836.52DB8946@cox.net...
> Make sure your fuel pump is still working, hot, most have been
> replaced by your year. My test is just to listen for it running, turn
> the ignition on, and before cranking it should run for about five
> seconds before it automatically shuts off. Or test the fuel rail for
> about forty pounds.
> God Bless America, ßill O|||||||O
> mailto:-------------------- http://www.----------.com/
>
> noone@yahoo.com wrote:
> >
> > I've got a hot stalling problem on my 88 XJ.
> >
> > The Jeep runs perfectly most of the time, however after several "hot

soaks"
> > (eg, my wife out shopping), or driven for several miles on the freeway

with
> > the A/C on the engine just quits while driving down the road.
> >
> > I first suspected the notorious Crank Position Sensor, which I replaced
> > last week. No joy. Had to have the Jeep towed home last weekend.

(Wife
> > not happy).
> >
> > I've gone over the ALL the connections in the engine compartment,

cleaned,
> > inspected and even tightened the female connections on those that looked
> > loose. All the grounds and battery cables have been cleaned.
> >
> > So now I suspect that the ignition control module is the culprit.

Before I
> > spend $150.00 on a replacement I'd like to know if there is a way to

test
> > the existing module?
> >
> > Any advice you could give me would be appreciated.
> >
> > Dave in Columbus




noone@yahoo.com 09-24-2003 12:40 AM

Re: Testing Ignition Module on 88 XJ
 
On Tue, 23 Sep 2003 10:35:23 -0400, noone@yahoo.com wrote:

>I've got a hot stalling problem on my 88 XJ.
>
>The Jeep runs perfectly most of the time, however after several "hot soaks"
>(eg, my wife out shopping), or driven for several miles on the freeway with
>the A/C on the engine just quits while driving down the road.
>
>I first suspected the notorious Crank Position Sensor, which I replaced
>last week. No joy. Had to have the Jeep towed home last weekend. (Wife
>not happy).
>
>I've gone over the ALL the connections in the engine compartment, cleaned,
>inspected and even tightened the female connections on those that looked
>loose. All the grounds and battery cables have been cleaned.
>
>So now I suspect that the ignition control module is the culprit. Before I
>spend $150.00 on a replacement I'd like to know if there is a way to test
>the existing module?
>
>Any advice you could give me would be appreciated.
>
>
>Dave in Columbus



Thanks for the suggestions. I did switch the relays around, thinking that
the fuel pump relay might be failing when hot. No help there. The Jeep
has stalled on me only once and at that time I did check for fuel pump
whine when turning on the ignition. Pump seemed to be running.

I think I'll try my heat gun on the module as suggested. Maybe I can get
it to fail in my garage so I can pinpoint the problem. I wish it would
just fail completely with a cloud of smoke so I'd know exactly what it
causing the stalling problem.

The fuel pump, as far as I know is the original. It will probably wait
until this winter to fail so I can replace it on my back in twenty degree
weather.

Again, thanks for the help!


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