supergoat

Started today. I was driving and all of a sudden My fuel cut. The car fired right up and drove home fine. Replicated it twoce more, complete loss of power but fires back up like a champ, no hesitation. It runs like a beast, screams at high rpm with plenty of power.

Ignition system has been completely replaced within the last 5000 miles. I reset the battery and installed a new MAF, went on a test drive and it was ok. In fact throttle response was much improved. I am not saying the MAF completely fixed the issue as I want more test drives before feeling it is fixed.

I would like some thoughts on the matter. Anything else to check?

RIWWP

iTrader: (2)

Sounds like the fuel pump? Overheating briefly shuts it down, cools off enough to re-fire, repeat.

supergoat

I think so too now. Took it on a drive and it was smooth at first, but once it warmed up more it would shut off if given more than half throttle, but drove smooth if I stayed light on the throttle.

RIWWP

iTrader: (2)

Yup, that sounds like it's the fuel pump.

Be very very careful about any hard throttle use, especially high RPM. A sudden fuel cut from your fuel pump when the ECU isn't expecting it could blow your engine. One member's car that I worked on lost 2 engines that way, the original factory engine and then the reman that was put in during the post-warranty-install shakedown drive. Other reports of it happening as well.

supergoat

No problem. It is at the dealer now being fixed under warranty. If they blow it while diagnosing it's on them.

supergoat

They said I need new plugs. The plugs ARE new.... I hate incompetence.

supergoat

Figured I'd update this thread with my story.

So the dealer insisted my spark plugs were the cause of my issue. I told them that's not possible as I change my plugs, wires and coils every year.

When they asked me how I know it's the fuel pump and not the plugs I said "Because the fuel pump is bad. It's not working correctly. That is what tells me it's bad. And I know the plugs are not the problem because......they are NOT the problem."

However they would not diagnose the pump until I changed the plugs. They were coming up on a year anyway so I changed them and brought the car back. I was greeted with a "How is the car running?"

I replied, "Well I was skeptical at first, as you remember. But I changed the spark plugs and you know what? They somehow magically did NOT fix my dying fuel pump. Who knew? Well, I suppose I did of course...."

So they brought it back and tested the fuel pump. It produced a solid 15psi of pressure. So the dealer says "Well your pump is down on pressure, it needs to be changed." To which I replied, "You're kidding! I would never have thought!"

So then they changed it out for me. If it was not for the warranty on the car I would have just done it myself.

wcs

iTrader: (2)

Wow ... unbelievable

Great update thanks

TeamRX8

iTrader: (25)

well you did take it to a dealership ...

supergoat

Indeed, ONLY because of the warranty.