1987 Jeep Wrangler stalls and backfires in gear

Tiny
ANGELKBUS
  • MEMBER
  • 1987 JEEP WRANGLER
  • 6 CYL
  • 4WD
  • MANUAL
  • 178,000 MILES
My jeep keeps acting up usually once I get it into fourth gear or once I've been driving for about 10 min it idles fine it starts sputtering then stalls and back fires when restarting and trying to give it gas to keep it running. I replaced fuel pump, fuel filter, distributor cap and rotar button and plug wires
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Monday, November 8th, 2010 AT 5:16 AM

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Tiny
CJ MEDEVAC
  • EXPERT
See my profile

I do not know your rig well!

I'm sure you have a carburetor

Really look for a possible vacuum leak.

See if any of this might help you! (I'm still working with this feller)

http://www.2carpros.com/forum/1984-jeep-cj7-84-cj-7-stalls-when-it-idols-vt522698.html?highlight=

Let me know how it goes

The Medic
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Monday, November 8th, 2010 AT 8:01 AM
Tiny
ANGELKBUS
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I have looked over the vacum hoses replaced dis cap, fuel pump, plug wires and a couple fuel lines. Has a holley carb. Doesnt act up till I drive it about 10 min. Would anything in the dis make it act like that. Or the coil? Thanks and hope your father is doing ok
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Wednesday, November 10th, 2010 AT 6:14 PM
Tiny
CJ MEDEVAC
  • EXPERT
Pap had to have a blood clot filter installed, They think maybe some of his blood loss is due to thin blood (taking a thinner, for clots he DID have) Suspect its getting out slowly, at radiator drain and exhaust (no visual). Install filter, no more additives, viscosity increases. No more blood loss. Pap get strong. Go home. Soon, we hope!

Did you modify anything, immediately prior to having this issue?

On a CJ, we have a EXTERNAL IGNITION MODULE. Can be EZily removed and tested at Autozone, Advance Auto, FOR FREE. Maybe other stores too

I suspect yours is a smaller compact module (probably in the distributor)

Call ahead, see IF/ WHO can test it, prior to taking it out. On CJs I have them do it 5 or more times in a row! (Warms them up) Then they will FINALLY fail, before I reinstall a BAD ONE---THINKING ITS GOOD. Spending the next 3 days, tearing everything else apart. Then having Mr. Knowitall give me advice, "I wooda tested the module before I done all that"

Then the arguing starts. Then you actually find yourself at school (Pap calls it, THE SCHOOL OF HARD KNOCKS)

These things COMPLETELY FAIL--or--FAIL AND TEASE REPEATEDLY, maybe other symptoms too

They are tested for low and high RPM, and other stuff too'

Its possible it could be the Evil factor. What you got to lose, testing it?

You will probably need to spend $$$$$ to reinstall it or a New one. Maybe 1-3. You need a Packet/ bottle of HEAT SYNC GREASE (or whatever they call it) It dissipates the heat off of the bottom of the module and transfers it to the distributor metalor it will over heat and fail. Just sorta smear it on the bottom of the module

I will be here, awake till morn, at the Horsespital!

I will now think of distributor and other issues to maybe cause this. How have you tested for vacuum leaks? Techniques?

Your Turn

The Medic
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Wednesday, November 10th, 2010 AT 9:31 PM

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