1991 Jeep Wrangler Logo
Posted on Sep 15, 2010
Answered

We have a 1991 jeep wrangler 4.0 and we changed the fuel pump and now the coil is getting no fire when i hook the battery back up

Answer This Question

1 Answer

Anonymous

Level 1:

An expert who has achieved level 1.
New Friend:

An expert that has 1 follower.
Welcome Back:

Visited the website for 2 consecutive days.

  • Contributor 2 Answers
  • Posted on Feb 28, 2011
Anonymous
Contributor
Level 1:

An expert who has achieved level 1.
New Friend:

An expert that has 1 follower.
Welcome Back:

Visited the website for 2 consecutive days.

Joined: Jan 05, 2011
Answers
2
Questions
0
Helped
719
Points
2

My 1991 Wrangler would alternate between no spark and no fuel. After replacing the crank sensor, the coil, and the fuel pump twice I started chasing wires looking for a bad ground. There is a black with a yellow stripe wire that comes out of the rear body harness between the front e brake mount and the front door post(very hard to get at)right above the bottom dash edge that should be securely grounded to the front e brake mount. As soon as I secured that ground everything worked properly again.

Add Your Answer

×

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

0helpful
1answer

98 jeep put new crank sensor coil pickup and coil .no fire to plugs or fuel pump
Check for inline fuse between box and battery.
Read full answer
Dec 10, 2013 • 1998 Jeep Wrangler
0helpful
1answer

It will run perfect approx 10-15 minutes die down and start right backup, here what has been replaced /fuel pump/fuel filter/ distributor/ ign coil/ fuel pressure are 28-35 psi continuous even at time of...
check it over 4 vacuim leaks or faulty vac valves
Read full answer
Sep 11, 2011 • 1991 Jeep Wrangler
0helpful
1answer

On my 1991 jeep wrangler 2.5 liter there's no current to the fuel pump and I've changed the relay switch
You may want to check the coil also to see if it is getting fire and if not the ECM may be bad. Hope this helps
Read full answer
Jun 04, 2011 • 1991 Jeep Wrangler
0helpful
1answer

My jeep won't crank, it will turn over, but not fire, any ideas? I have an automatic straight 6, 4 liter 1991. I have replaced the coil and battery, has plenty of gas, but has been sitting for a couple...
Check to make sure the check engine light lights up in the dash, before cranking. If it does not come on, your jeep ecu is in need of repair.
Read full answer
Apr 23, 2011 • 1991 Jeep Wrangler
0helpful
1answer

Ive got a 1991 jeep wrangler an change the engine from a 2.5L to a 4.0L an cant get it to fire at the coil ive got power going in but not comin out ive got power at the distributor to
Did you change the computer with it? ECM
Read full answer
Feb 01, 2011 • 1991 Jeep Wrangler
0helpful
1answer

I had a 2.5L in a 1991 jeep wrangler an put a 4.0 in it ive got power to my coil an distributer but cant get it to fire at the coil
do yoy have enough (any) fuel pressure
Read full answer
Feb 01, 2011 • 1991 Jeep Wrangler
0helpful
1answer

No fuel no spark but all lights work
hello, you might have to replace ign switch, some jeeps have a safety netrual switch, i believe some even has switches on the clutch pedal, i am not a hundred percent sure, just throwing some suggestions out to you, also check battery, i believe these jeeps has manual fuel pump, wont work untill you turn motor over, have coil checked, this is where your fire starts from, besides the battery, check all fuses under dash, and under the hood,
Read full answer
Apr 08, 2010 • 1991 Jeep Wrangler
0helpful
1answer

1991 jeep wrangler trouble starting and stalling
It could be a fuel filter clogged up or it could be a fuel pump going bad. Does the jeep start back up after it stalls? Is there any more symptoms?
Read full answer
Jan 27, 2010 • 1991 Jeep Wrangler
0helpful
1answer

My car stalls
Check fuel filter . You have a mechanical pump & a carburetor on that model dont you?...Check fuel pressure (should be around 6-7 lbs) and check coil immediately after it shuts down...sometimes coils will act like that just before they go bad..
Read full answer
Mar 14, 2009 • 1991 Jeep Wrangler
0helpful
1answer

1991 JEEP WRANGLER WONT START
Take the distributor cap have someone crank the car and look if rotor turns, look at rotor conditions, I am sure that you have replaced it, hot wire from positive on the battery to positive on the coil, if car starts after you have a problem on the key, Is it fuel getting to the injectors? after You replaced so many things,if your rotor is not turning when You crank the engine, your timing chain must be defective or timing gear,
Read full answer
Jan 21, 2009 • 2005 Jeep Wrangler
Not finding what you are looking for?

View Most Popular

1991 Wrangler

  • Cars & Trucks

Related Question

98 jeep put new crank sensor coil pickup and coil .no fire to plugs or fuel pump

  • 1998 Jeep Wrangler

Related Topics

321 views

Ask a Question

Usually answered in minutes!

Popular Questions

2002 jeep wrangler 6 cylinder:

2002 Jeep Wrangler

Why does check eng light come on and engine starts to sputter

1995 Jeep Wrangler

Poor gas mileage on my jeep liberty

2005 Jeep Wrangler

I Need to see the fuse box diagram for a 1991 jeep

1991 Jeep Wrangler

Heater blows cold air

2004 Jeep Wrangler

Check Out the Latest Top Trucks Report!
Check Out the Latest Top Trucks Report!

View all Fixya Reports

Top Jeep Experts

ZJ Limited
ZJ Limited

Level 3 Expert

17989 Answers

Thomas Perkins
Thomas Perkins

Level 3 Expert

15088 Answers

john h

Level 3 Expert

29494 Answers

Are you a Jeep Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...