Any ideas would be helpful! - Mustang Evolution

Go Back   Mustang Evolution > Ford Mustang | Wrenching, Care and General Topics > General Mustang Discussion

Thread Tools Search this Thread
Please support our sponsors and let them know you heard about them here!
Old 09-05-2010, 08:04 AM   #1
Registered User
Join Date: Sep 2010
Posts: 5
Any ideas would be helpful!

Hey guys, Thought I'd leave a post here too and see if anyone has an idea. Need some help here. Just bought my first mustang two weeks ago. Shes a '02 sixer convertable with 38k miles. Always stored with a cover over her and indoors to boot so she looks great still. Didn't notice any issues during the test drive other than you feel every bump in the road through the suspension.

So the day after I bought it, I noticed that while accelerating through 30-45 mph it started jerking/surging. Felt like a really bad transmission shutter. Mechanic swore up and down that it was something simple so I replaced plugs and wires with the premium stuff, swapped the air filter and fuel filter, and had my mechanic clean the throttle body and air flow sensor. That helped it to an extent (took it from about a 10 to a 7 on a 0-10 scale). She idled much better though.

My mechanic still swore it wasn't trany related. He checked some engine codes (though no lights on) and found the EGR valve pressure sensor was out of spec. He swapped that out and it seemed to fix the issue! I was thrilled! Drove it around that night and it was fine. Then I went and put gas in it (speedway 87 octane), got a block down the road and BAM it starts it all up again. It started shuttering really hard during acceleration at the speeds listed above. My mechanic was stumped. It sounded like he had lost his patience for the issue and didn't want me to bring it back.

So now I'm trying to figure out what to try next. The mechanic said that driving it wont hurt it, just annoy the hell outta me. I put 5 gallons of 93 octane (BP brand) in it last night and it seems to have calmed the issue for the time being.

Any ideas? And what grade of gas do most people run in the V6 models?

Thanks for all your help fellas!
Paintbb84 is offline   Reply With Quote
Sponsored Links
Old 09-05-2010, 01:21 PM   #2
Registered Member
mustang03ally's Avatar
Join Date: Aug 2010
Region: Michigan
Posts: 47
Re: Any ideas would be helpful!

Hmm, I run the standard 87 octane gas and haven't run into any problems like that. After replacing the filters and cleaning the throttle body and replacing the sensor, it sounds like it keeps going back to a fuel system problem. Bad fuel injectors maybe, fuel pump?
Did the person you bought it from ever mention any problems before? If not I'd definitely find out.
I would also take it to another mechanic to be sure. They may find something that your other guy just didn't.
Good luck.
mustang03ally is offline   Reply With Quote
Old 09-05-2010, 11:31 PM   #3
Moderator Emeritus
SpectorV's Avatar
Join Date: May 2003
Region: Alabama
Posts: 26,049
Send a message via AIM to SpectorV
Re: Any ideas would be helpful!

as said in the other thread, check the coil packs a missfire can feel like a trans slip
2003 Cobra Vert (Redfire) #3938 of 5082 @ 05/27/2003
472rwhp/493rwtq -Modification List - Dyno Sheet
2012 Mustang 3.7L M6 (Kona Blue)
2011 Ford Edge Sport (Red Metallic)
SpectorV is offline   Reply With Quote
Sponsored Links
Old 09-06-2010, 12:03 PM   #4
Registered User
ivoryowner's Avatar
Join Date: Feb 2010
Region: Texas
Posts: 16
Re: Any ideas would be helpful!

I had an '04 sixer convertible I bought used w/13k. Drove it for (almost) 5 years and traded it on my '10 w/76k. The only issue I had was trying to accelerate. I had to press the gas pedal just so or it seemed like I was driving with only 4 cylinders...I always used 87 octane - per specs. I was always told by mechanics I know not to put higher in or I could find my engine "pinging" if I went back to 87. I agree w/alley though, maybe another mechanic would have a different take on the problem. Had to do that myself w/my '10's problem.
ivoryowner is offline   Reply With Quote

Lower Navigation
Go Back   Mustang Evolution > Ford Mustang | Wrenching, Care and General Topics > General Mustang Discussion

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
any ideas for this Kyle The Bar 20 06-27-2007 06:02 AM
ideas? Kryptonite Mustang Audio & Video 2 10-23-2006 03:49 PM
ideas blue00v6 Pre-2005 V6 Mustang 13 04-28-2006 11:01 AM
Attention: 99-00 Mustang owners Helpful info Read this. ACT! tire Pre-2005 V6 Mustang 3 07-15-2003 04:50 PM
Ideas??? 1Slow6er Mustang Audio & Video 3 05-01-2003 11:08 PM

» Like Us On Facebook

02:43 AM

Powered by vBulletin® Version 3.8.8
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Content Relevant URLs by vBSEO 3.6.0 is in no way associated with or endorsed by Ford Motor Company.