Cranks but will not start - JeepForum.com
 6Likes
Reply
 
LinkBack Thread Tools
post #1 of 25 Old 03-10-2019, 07:05 PM Thread Starter
[email protected]
Registered User
 
April11@1969's Avatar
 
Join Date: Mar 2019
Posts: 9
Garage
Cranks but will not start

Hello Everyone,

This is my first post, so please be gentle. I have a 1993 Jeep Wrangler 2.5 liter 5 speed manual transmission and I just completed an engine swap. However, It will not start, so here are the symptoms, and things I have done. But before I go into all of that, I can pull start it, and it fires right up, and runs beautifully!! So when trying to start normally, it just cranks over, and has no spark.


I have replaced all the plugs, wires, the coil, distributor, & CPS, I have also had the starter tested, and checked all fuses and PDC. the ECU is fairly new, and so is the fuel pump. Battery is good as well. So I am at a loss.


As I said, every time I pull start, it fires right up and runs beautifully, it idles well, and takes off as it should down the highway, but when I shut it off, just cranks over. Perhaps I missed a wire somewhere? Summer is coming and I need my baby!!



Thanks in advance.
Brian


Take the road less traveled, who knows what awaits?
Sponsored Links
Advertisement
 
post #2 of 25 Old 03-10-2019, 07:33 PM
GTS225
Registered User
 
Join Date: Apr 2018
Posts: 43
I'm not knowledgeable enough yet, but I wonder if there is a clutch safety switch not acting correctly?

Roger
GTS225 is offline  
post #3 of 25 Old 03-10-2019, 07:46 PM
Luuca
Typical /f12 Hooligan
 
Luuca's Avatar
2005 LJ Wrangler 
 
Join Date: Apr 2012
Location: Corona
Posts: 5,992
SO Key On and in RUN, it will roll start and idle. This tells me that it will provide spark with the key in RUN. It is not providing spark with the key in START or the starter is not popping out enough to turn the flywheel.

Verify this by turning the key to RUN, trans in neutral, and wheels chocked, jumper the starter with jumper cables and verify it will start and idle. If that is the case, you need to double check your ignition wiring. moving the harnes out of the way for the swap may have damaged a line from the ignition to the ECM.
Chrisnvegas likes this.

91 YJ "Alice"
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
YJOTM Sept. 2017
05 LJ Rubicon "Ghost"

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


Luck Favours The Prepared
Luuca is offline  
 
post #4 of 25 Old 03-10-2019, 09:51 PM Thread Starter
[email protected]
Registered User
 
April11@1969's Avatar
 
Join Date: Mar 2019
Posts: 9
Garage
Hello Roger,
If I am to believe what research I have done, there is no Neutral Safety Switch...... Unless of course I am wrong..

Take the road less traveled, who knows what awaits?
post #5 of 25 Old 03-10-2019, 09:52 PM Thread Starter
[email protected]
Registered User
 
April11@1969's Avatar
 
Join Date: Mar 2019
Posts: 9
Garage
Thank you for the suggestion.. I shall try that tomorrow.

Take the road less traveled, who knows what awaits?
post #6 of 25 Old 03-10-2019, 09:57 PM
fishadventure
Registered User
 
fishadventure's Avatar
1989 YJ Wrangler 
 
Join Date: Jul 2013
Location: Morrisville
Posts: 6,320
Garage
I can’t help here. Luuca has it covered anyway.

In my jeep on the passenger side I have a little red plastic box that was oem on a 1960s Johnson boat motor. The hinged cover is moulded with the words, “EMERGENCY STARTER ROPE”

That’s all I could think of when I read “pull start.”
Boojo35 likes this.

[size=“3”]Shackles & D-rings are different things.
Cranking IS turning over
fishadventure is offline  
post #7 of 25 Old 03-11-2019, 09:13 AM
jtec
Registered User
2014 JK Wrangler 
 
Join Date: Oct 2017
Posts: 5,518
Be careful testing trans in N clutch depressed.

A test light on + terminal of ign coil..... does light come on in RUN?
I believe from your description it will be ON .
Move switch to START - engine will crank did test light come on?

I suspect ther is an ign switch issue. this will test for that.

The diagrams for this era jeep is mickey mouse and a tough read even for me.......
Boojo35 likes this.

When I see the price of OEM I think aftermarket.
When I see the quality of aftermarket I think OEM.
jtec is offline  
post #8 of 25 Old 03-11-2019, 09:52 AM
timatoe
Registered User
 
timatoe's Avatar
1990 YJ Wrangler 
 
Join Date: Aug 2006
Location: Grass Valley
Posts: 17,272
You're on the right track.

I just thought it was odd your username shows as [email protected], never seen that in the 13 years I've been on here.

Quote:
Originally Posted by George Orwell
We sleep safe in our beds because rough men stand ready in the night to visit violence on those who would do us harm.
timatoe is offline  
post #9 of 25 Old 03-11-2019, 11:28 AM
stephencbrinson
Registered User
1992 YJ Wrangler 
 
Join Date: Jul 2018
Location: Hollywood
Posts: 159
Quote:
Originally Posted by fishadventure View Post
I can’t help here. Luuca has it covered anyway.

In my jeep on the passenger side I have a little red plastic box that was oem on a 1960s Johnson boat motor. The hinged cover is moulded with the words, “EMERGENCY STARTER ROPE”

That’s all I could think of when I read “pull start.”
ME TOO! I've pull started many an outboard motor.

Maybe just run the pull cord to a hole in the drivers side. Then before you jump in just give her a yank.

I have nothing useful to add except make sure you have spark and fuel while cranking.

Sent from my SM-G930U using Tapatalk

1992 YJ, 2.5L, AX5, D30, D35, 2.5 RE lift
Daniel 3:18
Ephesians 2:1-12
stephencbrinson is offline  
post #10 of 25 Old 03-11-2019, 04:44 PM
Boojo35
Registered User
1994 YJ Wrangler 
 
Join Date: Jul 2007
Location: Beer City
Posts: 1,069
Garage
Quote:
Originally Posted by GTS225 View Post
I'm not knowledgeable enough yet, but I wonder if there is a clutch safety switch not acting correctly?

Roger
YJ's do not have a clutch switch. Also. OP says it cranks. This would eliminate a clutch switch as they inhibit the starter circuit.... you know.... the thing that makes it crank.

If you cannot fix it with a hammer then it has to be an electrical problem.
Boojo35 is offline  
post #11 of 25 Old 03-11-2019, 04:47 PM
Boojo35
Registered User
1994 YJ Wrangler 
 
Join Date: Jul 2007
Location: Beer City
Posts: 1,069
Garage
Quote:
Originally Posted by fishadventure View Post
I can’t help here. Luuca has it covered anyway.

In my jeep on the passenger side I have a little red plastic box that was oem on a 1960s Johnson boat motor. The hinged cover is moulded with the words, “EMERGENCY STARTER ROPE”

That’s all I could think of when I read “pull start.”
Me too. I was trying to visualize where he wrapped the rope and just how big of a dude he is to pull it off.

If you cannot fix it with a hammer then it has to be an electrical problem.
Boojo35 is offline  
post #12 of 25 Old 03-11-2019, 05:20 PM
Chrisnvegas
Windows95
 
Chrisnvegas's Avatar
1992 YJ Wrangler 
 
Join Date: Dec 2012
Location: Nevada Territory
Posts: 7,923
Using all the same ignition and computer parts?
If so, it should run now like before. So a wire was probably damaged along the way. All the plugs are different so it isn't improperly wired.
Have a partner crank over while you check for 12 volts + at the coil while cranking.
If yes, give it a squirt of starting fluid and crank it. If no start, then the fuel pump is shutting down when the switch is turned to crank.

This should narrow it down without buying parts.

If neither does anything, we'll dig deeper.

End the Ethanol Rip-Off
Chrisnvegas is offline  
post #13 of 25 Old 03-11-2019, 05:33 PM
Boojo35
Registered User
1994 YJ Wrangler 
 
Join Date: Jul 2007
Location: Beer City
Posts: 1,069
Garage
Quote:
Originally Posted by jtec View Post
Be careful testing trans in N clutch depressed.

A test light on + terminal of ign coil..... does light come on in RUN?
I believe from your description it will be ON .
Move switch to START - engine will crank did test light come on?

I suspect ther is an ign switch issue. this will test for that.

The diagrams for this era jeep is mickey mouse and a tough read even for me.......

Some of the worst diagrams ever. Have to skip from page to page. Write notes when doing it to pick up where things left off. Have to draw own schematics from time to time to make sense of it all. Then there are the schematics that don't necessarily account for all options available on a vehicle. Headlights with or without DRL is a great one to trace..... The pins at the headlamp switch alone. Pin 4 and pin 6 specifically... if I recall the correct numbers. The switch diagram does not clearly show crap. Just stuff out in space.... Love it!

Rant over.

If you cannot fix it with a hammer then it has to be an electrical problem.
Boojo35 is offline  
post #14 of 25 Old 03-11-2019, 08:10 PM
fishadventure
Registered User
 
fishadventure's Avatar
1989 YJ Wrangler 
 
Join Date: Jul 2013
Location: Morrisville
Posts: 6,320
Garage
Quote:
Originally Posted by Chrisnvegas View Post
If yes, give it a squirt of starting fluid and crank it. If no start, then the fuel pump is shutting down when the switch is turned to crank. This should narrow it down without buying
Chris is prettybsharp. I think he meant, “If (it has spark and starts with starting fluid), then the fuel pump is shutting down when the switch is turned to crank”

[size=“3”]Shackles & D-rings are different things.
Cranking IS turning over
fishadventure is offline  
post #15 of 25 Old 03-11-2019, 09:21 PM Thread Starter
[email protected]
Registered User
 
April11@1969's Avatar
 
Join Date: Mar 2019
Posts: 9
Garage
Hello Luuca,

I have not had enough time to do what you have sugesested yet. had to fix brakes on truck, but will keep you posted.

Take the road less traveled, who knows what awaits?
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the JeepForum.com forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid e-mail address for yourself.



Email Address:
OR

Log-in











Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Similar Threads
Thread Thread Starter Jeep Forums Replies Last Post
2002 Overland Cranks strong but won't start JSMCO WJ Grand Cherokee Forum 12 10-13-2018 12:35 PM
2002 TJ Cranks no Start - my Daughters JEEP Jeepers-Creeper TJ Wrangler Technical Forum 34 09-17-2018 10:52 AM
HELP! 92 2.5L Cranks but won't start stephencbrinson YJ Wrangler Technical Forum 18 07-25-2018 10:30 AM
4.0 TJ cranks fine intermittent no start RossL TJ Wrangler Technical Forum 4 05-29-2018 02:18 PM
Cranks but won't start tcmault TJ Wrangler Technical Forum 6 01-04-2018 03:54 PM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome