Flashing engine light - JeepForum.com

 
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post #1 of 15 Old 09-11-2012, 07:16 PM Thread Starter
SkeeterJeep
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Flashing engine light

So 2 weeks ago my engine light started flashing, took it to the garadge to get fixed, they said it was a misfire.. But the Manuel said exactly that its a Cadillac converter problem...tried telling that to him but its wrong obv (sheesh) anyway, today it started doing it again.. truck shakes like its in an earthquaks as soon as i get just under 30.... any ideas?

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post #2 of 15 Old 09-12-2012, 05:24 AM
tjwalker
It's the crank sensor!
 
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Is this on your WJ? If so, you are in the wrong forum. These forums are model specific.

In general though, a flashing check engine light indicates a SERIOUS misfire, which if ignored, will destroy your catalytic converter.

You need to resolve this ASAP. There are a whole host of causes of misfires.

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Past Jeeps: 49 Willys, 81 Scrambler, 88 Comanche
Without "data", all you have is an opinion!
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post #3 of 15 Old 09-12-2012, 05:53 AM
JerpXJ
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This happened to me a few months ago, turned out to be a dead injector.
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post #4 of 15 Old 09-12-2012, 07:46 AM
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Like tjwalker said, a flashing light is there to get your attention...as in "Hey, stop driving and fix this problem".

This is a basic rule for ALL OBDII vehicles, even Cadillacs!!?

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post #5 of 15 Old 09-12-2012, 08:04 AM
GetLifted
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It converts into a Cadillac?? lol thats funny.


CHECK YOUR GAP. Champion set at .035. Dont skip this part. Report back on conditions of plugs and while your in there do a compression test.
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post #6 of 15 Old 09-12-2012, 10:11 AM
pumpkinXJ
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Quote:
Originally Posted by SkeeterJeep
So 2 weeks ago my engine light started flashing, took it to the garadge to get fixed, they said it was a misfire.. But the Manuel said exactly that its a Cadillac converter problem...tried telling that to him but its wrong obv (sheesh) anyway, today it started doing it again.. truck shakes like its in an earthquaks as soon as i get just under 30.... any ideas?
Being a tech, I can see where he told you that you were wrong. That's just about every techs petpeve is when customers bring there car in self diagnosed.

When the engine light is flashing its most of the time due to miss fires that can cause damage to the catalyst. Either pull codes and put them on here so we can help you determine what's causing the miss fires or take it to the shop and just tell them its running rough and the cel is flashing. Then see what they tell you.

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past 98 xj (4.5 on 33s)sold 95 zj (stocker)sold
Quote:
Originally Posted by -Deepskyy- View Post
If it ever happens to me, I'll just put the clutch down to the floor, and start revving the YJ up to about 3500 and then yell out "I'M SORRY I CAN'T HEAR YOU OVER THE SOUND OF AWESOME COMING FROM MY JEEP!"
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post #7 of 15 Old 09-12-2012, 02:44 PM Thread Starter
SkeeterJeep
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No its on my XJ (i know the difference in the forums), and now he is saying its prob a bad injector. There are no stores around within 40 miles that can pull codes, i live in the middle of no where.
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post #8 of 15 Old 09-12-2012, 02:46 PM
pumpkinXJ
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Quote:
Originally Posted by SkeeterJeep
No its on my XJ (i know the difference in the forums), and now he is saying its prob a bad injector. There are no stores around within 40 miles that can pull codes, i live in the middle of no where.
Did he pull codes? Ask him what codes he got.

current 99xj (5.5 on 36s)
past 98 xj (4.5 on 33s)sold 95 zj (stocker)sold
Quote:
Originally Posted by -Deepskyy- View Post
If it ever happens to me, I'll just put the clutch down to the floor, and start revving the YJ up to about 3500 and then yell out "I'M SORRY I CAN'T HEAR YOU OVER THE SOUND OF AWESOME COMING FROM MY JEEP!"
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post #9 of 15 Old 09-12-2012, 03:15 PM Thread Starter
SkeeterJeep
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He does not have the machine needed to pull the codes. This is an old town and he is the closest garage in 70 miles....I miss virginia.... lol
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post #10 of 15 Old 09-12-2012, 03:22 PM
pumpkinXJ
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Quote:
Originally Posted by SkeeterJeep
He does not have the machine needed to pull the codes. This is an old town and he is the closest garage in 70 miles....I miss virginia.... lol
Take the drive to a shop that will be able to pull codes and properly diag the jeep. Otherwise be prepared to spend a lot of money throwing parts at a problem, that you arnt sure what's causing it.

current 99xj (5.5 on 36s)
past 98 xj (4.5 on 33s)sold 95 zj (stocker)sold
Quote:
Originally Posted by -Deepskyy- View Post
If it ever happens to me, I'll just put the clutch down to the floor, and start revving the YJ up to about 3500 and then yell out "I'M SORRY I CAN'T HEAR YOU OVER THE SOUND OF AWESOME COMING FROM MY JEEP!"
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post #11 of 15 Old 09-12-2012, 05:38 PM
tjwalker
It's the crank sensor!
 
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You still haven't told us what YEAR your XJ is.

This information is critical to getting proper responses.

99 Cherokee, 4.0 AW4, NP242
Past Jeeps: 49 Willys, 81 Scrambler, 88 Comanche
Without "data", all you have is an opinion!
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post #12 of 15 Old 09-12-2012, 09:22 PM
CJ7-Tim
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1) Pull your own codes. Buy whatever is required to do so. Your Jeep is trying to tell you what is wrong.

2) Get a better mechanic. Sounds like your mechanic can't find his backside, with both hands trying.

.

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post #13 of 15 Old 09-13-2012, 12:28 AM
GetLifted
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Turn the key forward and back 3 times leaving it in the on position. Count the blinks. The codes come in 2 digits (12-battery disconnected last 50 starts, 43-coil driver, 55- codes done)

Lol i bet those are your codes. And i bet youll pull code p1391 with a OBD2 scanner. Infact your online. Order a dang OBD2 scanner for like 40$ on amazon!
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post #14 of 15 Old 09-14-2012, 06:23 PM Thread Starter
SkeeterJeep
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sorry it is a 2000. and it ended up being both injectors. one was dead and the other was misfiring a lot..
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post #15 of 15 Old 09-16-2012, 02:57 PM
JerpXJ
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I had the same issue in my 2000 like I said previously. Replacements arnt really all that much either.
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