YJ 4cy Engine Question
Just got a 95 wrangler the other day, drove fine. After I drove it about a day I noticed it would sputter some times like it was about to die then surge back The other day I was driving and it kept dying on me but would start right back up. Any idea what could be causing this? I was thinking of replacing the fuel filter and fuel pump to see if that did the trick.
Fuel filter is good to replace since you dont know when it was last. I wouldnt jump to the fuel pump yet. This sounds like a CPS going out on you. There is a test procedure if I remember correctly but I dont remember it. I am sure Que will be along shortly. Listen to him trust me on this you will save alot of money and headaches and potentially learn ALOT.
Wot's...uh The Deal?
You should check to see if you have any engine codes. There's a "how to" in the FAQ's section.
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Originally Posted by Major Sanderson
Originally Posted by Beefstew
Originally Posted by ritjobbie View Post
I strongly suggest troubleshooting this issue before throwing parts at the rig. Have you at least checked for codes as previously mentioned? If no codes, then test fuel pressure at the fuel rail. You can rent testers at most auto part stores. Check your fuel pressure while idling, then remove the vac line on the fuel pressure regulator and note the pressure change. Then shut it down and watch how quickly pressure bleeds of if at all. The problem with replacing parts willy-nilly is that there is a strong potential of installing a bad part in place of an otherwise good one. This costs more money and further complicates the actual fix.
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