 Sputters at 3000 RPM. ACK! |
 Apr 24, 2014 - 9:46 PM
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 Enthusiast  Joined Sep 16, '13 From Grand Rapids, MI USA Currently Offline Reputation: 1 (100%)  |
Hey all,
Not a good night. Motor started sputtering when reaching 3000 rpm. Half-way though a tank of gas. Idles fine. No odd noises. Sputters under acceleration and in park. Google has not been any help. Thoughts? Any help would be greatly appreciated. -------------------- '99 Triple Black GT Convertible
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May 21, 2014 - 1:35 PM
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Enthusiast Joined Sep 16, '13 From Grand Rapids, MI USA Currently Offline Reputation: 1 (100%) |
Update:
The dealer swore up and down it was melted cats. Wanted $1500 to fix. Complete written estimate of everything. Bought the 2 Cats and O2 sensors from RockAuto and had a reputable garage do the install, $650 total. Check engine light off! Problem solved?  No.  Pulling out of the garage, I gunned it. Hit 3800. Sputter back to 3000, Up to 3600. Back to 3000. Hit 4000 and took right off! Runs great above 4000. So the problem is engine stalling at around 3800. Backfires as well. Before and after that, the motor is great. Check engine light back on. I have read ALOT of possibilities, like various ignition, computer, and fuel issues. With those, I could see hitting a wall at 3800 and running like crap above, if it would go above at all. But to have issue at that particular range perplexes me (actually I am extremely angry that I have thrown away $650). I sold alot of vintage video game systems to pay the $650. The garage is looking at it now. It threw out several codes. The guy feels bad that he did not check the computer first, but we took the dealer's word for it. There is usually a 3-5 day wait for the garage, but they are looking at it as I type this. I will post the results. I've got a bad feeling about this... -------------------- '99 Triple Black GT Convertible
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Posts in this topic
GTMike Sputters at 3000 RPM. ACK! Apr 24, 2014 - 9:46 PM
Box When was the last time the air and fuel filter and... Apr 24, 2014 - 11:20 PM GTMike Just picked up the broken Celi from the dealer. ... Apr 30, 2014 - 8:07 PM Box If you live where they don't do emissions just... Apr 30, 2014 - 8:13 PM Smaay use a spark plug anti fouler on the rear O2 and it... Apr 30, 2014 - 11:19 PM Special_Edy You may not need to replace the cat, it can probab... May 21, 2014 - 5:30 PM lagos You just need to replace the plugs, cap, rotor and... May 21, 2014 - 5:54 PM travisxcore Yea that's what my dizzy did would it was goin... May 21, 2014 - 6:07 PM Special_Edy Check the primary and secondary resistance on the ... May 21, 2014 - 7:05 PM GTMike So what was it?
Frayed wire at the crankshaft sen... May 22, 2014 - 2:12 PM GTMike Well, the issue has returned...
When the cranksha... Jun 25, 2014 - 3:33 PM Smaay 99% of the time when you throw EGR codes, its the ... Jun 25, 2014 - 3:42 PM GTMike Amateur fix? Guessing not. Jun 25, 2014 - 3:54 PM Box Vacuum switching valve, not hard at all. That or ... Jun 25, 2014 - 4:02 PM GTMike I've done some further digging and found instr... Jun 25, 2014 - 4:07 PM Box Another thing is the EGR temp sensor is probably c... Jun 25, 2014 - 4:38 PM GTMike The check engine light came back on. Advance check... Jun 27, 2014 - 8:43 AM Special_Edy Insufficient flow means the EGR isnt opening, you ... Jun 27, 2014 - 11:04 AM Bitter Not Bosch Platinum spark plugs are they?
I second ... Jun 27, 2014 - 7:27 PM
Box NGK and Denso are my plugs of choice. Jun 27, 2014 - 8:06 PM |
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