Hello all,
Looking for some help.
I took my TJ on a two hour drive one way this weekend, did great great cruising between 65-70 mph for 100+ miles. Upon reaching my destination, around three miles into a FS road, under load it suddenly sputtered and died as I'm driving up. Here are the following facts: ('98 TJ 4.0, 5spd, 235k miles) no codes, no check engine light, no leaks, no smells, everything is tight in the engine bay, newer battery, good charge, alternator is five years old, charging good, spark plugs are only 3-ish years old, distributor is two years old, top end rebuild 1.5 years ago, daily driver, idles great, strong healthy acceleration. No warning signs before this, other than one week ago I was driving and it bucked/sputtered briefly under load while gently cruising down the highway at 55-60 mph. I thought it was sediment in the gas tank or something, couldn't replicate it. From my symptoms, the internet says possible Crankshaft Position Sensor. Could it be a bad fuel pump? Bad fuel injector? Starter sounds fine, cranks and cranks and cranks but it appears to be getting zero spark. Doesn't even try to fire. I'm at a complete loss, again this is my DD, and for it to just suddenly give out without any signs or loud bangs is super confusing. Had to tow it home. Any suggestions would be appreciated, I would like to diag it before sending it to a shop. I would like to try to fix it myself, however I do not want to throw the parts cannon at it. I'm going to start taking things apart today to inspect further. Thanks.
Looking for some help.
I took my TJ on a two hour drive one way this weekend, did great great cruising between 65-70 mph for 100+ miles. Upon reaching my destination, around three miles into a FS road, under load it suddenly sputtered and died as I'm driving up. Here are the following facts: ('98 TJ 4.0, 5spd, 235k miles) no codes, no check engine light, no leaks, no smells, everything is tight in the engine bay, newer battery, good charge, alternator is five years old, charging good, spark plugs are only 3-ish years old, distributor is two years old, top end rebuild 1.5 years ago, daily driver, idles great, strong healthy acceleration. No warning signs before this, other than one week ago I was driving and it bucked/sputtered briefly under load while gently cruising down the highway at 55-60 mph. I thought it was sediment in the gas tank or something, couldn't replicate it. From my symptoms, the internet says possible Crankshaft Position Sensor. Could it be a bad fuel pump? Bad fuel injector? Starter sounds fine, cranks and cranks and cranks but it appears to be getting zero spark. Doesn't even try to fire. I'm at a complete loss, again this is my DD, and for it to just suddenly give out without any signs or loud bangs is super confusing. Had to tow it home. Any suggestions would be appreciated, I would like to diag it before sending it to a shop. I would like to try to fix it myself, however I do not want to throw the parts cannon at it. I'm going to start taking things apart today to inspect further. Thanks.
