I Cannot chase down this problem! plz advise!

Jobra98 · August 6th, 2011, 03:55 PM

Hello to all Members!

My Name is Joe, My pony's name is Jobra, he a 98 3,8l V6, true strait duels to flow-masters NO cat, MIL eliminators, Stock Engine and Tranny, adding deferential soon for positive track! He have a cold here are the symptoms;

1. Take of acceleration boggs down till about 3k RPM then it WAKES up and takes off...
2. Pulsating idle very hard with A/C on

What ive done so far to correct this (info from moddedmustangs.com!!!);

1. New fuel filter
2. new plugs and wires
3 new coil pack OEM
3 new egr valve
4 cleaned MAF
5 Cleaned throttle thing on top of intake (sry little mind boggled)
6 SEA-FOAM tank, crankcase, and vac lines.

Here is a video of what its doing!!

The problem Fix is to Disconnect battery to reset ECU, then Jobra runs strong and is a completely different transformer!

BUT what else can i do to fix problem MYSELF? (also got a date with auto shop Monday to hook it up to CPU)

PLEASE ADVISE MODDMUSTANGS MEMBERS!

<iframe width="425" height="349" src="http://www.youtube.com/embed/3p0otqQJ_vM?hl=en&fs=1" frameborder="0" allowfullscreen></iframe>

‪98 3.8l V6 Mustang weird acting?!?! at a dead end PLEASE HELP!‬&rlm; - YouTube

joeshopkins@hotmail.com

‪98 3.8l V6 Mustang weird acting?!?! at a dead end PLEASE HELP!‬&rlm; - YouTube

mcqueen · August 6th, 2011, 04:01 PM

Originally Posted by Jobra98

5 Cleaned throttle thing on top of intake (sry little mind boggled)

Are you talking about the IAC? I'm not totally familiar with SN95 upper intakes, but that's the only thing I can imagine you're talking about. If so, I would try cleaning the throttle body and checking for vacuum leaks (especially around gaskets, those get brittle after 13 years). I would put my money on a vacuum leak.

Jobra98 · August 6th, 2011, 04:09 PM

Yes IAC thank you, Cleaned throttal body with cleaner without squirting it IN the body (finger cleaned it) the vacs comming from EGR valve area dont leak when i blow through them.

If it could be a vac leak why do you think i can reset ECU and it work great for a day or so?

Jobra98 · August 6th, 2011, 04:53 PM

RE- checking vacs.. anything else?

Loki · August 6th, 2011, 05:08 PM

Stupid question, but have you checked your air filter? Lol

Sounds like you're having an air or fuel problem somewhere.. Or maybe one of your fuel injectors is bad/clogged?

Jobra98 · August 6th, 2011, 05:49 PM

...air filter is ok. im about to point the finger there (injectors). I thought it was a fuel/air ratio problem too?! but again why would it go back to running great after battery disconnect? Ive checked almost all things to test?! lol I guess i need to learn about Fuel Injectors LOL

Any one Else?!

Thanks guys so far so good!

Stang6899 · August 6th, 2011, 06:29 PM

CEL (check engine light) on?

Jobra98 · August 6th, 2011, 06:36 PM

No Sir!

Had on because of back o2s. added mil eliminator (no cat) and bunny tailed o2s to trannie. No Light No Cat No O2s

Weird ain't it LoL

dr.gonzo! · August 6th, 2011, 06:40 PM

My car sounded like that when the timing was way off. Drove like a slug until you were high up in the RPMs

That is on my old 88 5.0 though. Not sure how you new and improved guys do that w/o a distributor

dr.gonzo! · August 6th, 2011, 06:47 PM

Crankshaft position sensor

Jobra98 · August 6th, 2011, 07:01 PM

second person who said that! CPS, the other guy said it it was that it would throw a code. --per orilys. My pipe sound like 302 pur. but getting back to the point if it was the timing wouldnt it throw codes and how can it magicly be back on tims? hmmm did you watch video?

Q: can timing bog down engine when in R or D and heavier with A/C on?

*thanks, Joe

Jobra98 · August 6th, 2011, 07:01 PM

second person who said that! CPS, the other guy said it it was that it would throw a code. --per orilys. My pipe sound like 302 pur. but getting back to the point if it was the timing wouldnt it throw codes and how can it magicly be back on tims? hmmm did you watch video?

Q: can timing bog down engine when in R or D and heavier with A/C on?

*thanks, Joe

Shelbydog! · August 6th, 2011, 07:02 PM

So, correct me if I'm wrong, but the idle hops when the ac is on, and it drives like crap with the ac on? I'd say its the ac. Maybe the clutches in the ac unit are grabbing or worn out? Try running a short belt to bypass the ac, and see if it runs any better. That would isolate the prob to the ac. That's the only thing i can think of.

Jobra98 · August 6th, 2011, 07:07 PM

another guy said that too but then he said that i f it was that then disconnecting battery and letting ECU reset would not make it work again.

It does this not all the time, the A/C load was just to heavy down engine so you could hear how it sounded. but i WILL try that!

Thanks, Joe

Loki · August 6th, 2011, 07:18 PM

Originally Posted by Jobra98

second person who said that! CPS, the other guy said it it was that it would throw a code. --per orilys. My pipe sound like 302 pur. but getting back to the point if it was the timing wouldnt it throw codes and how can it magicly be back on tims? hmmm did you watch video?

Q: can timing bog down engine when in R or D and heavier with A/C on?

*thanks, Joe

That actually makes more sense seeing as how it runs fine for a bit after a battery disconnect.... & I'll tell you from experience that a bad CPS will not always throw a code. It didn't for me

Jobra98 · August 6th, 2011, 07:19 PM

Another video, i thought it was going to do fine but as you see...!!?!?!?

‪98 3.8l V6 Mustang weird acting?!?! at a dead end PLEASE HELP! PART 2‬&rlm; - YouTube

Jobra98 · August 6th, 2011, 07:24 PM

Originally Posted by Loki

That actually makes more sense seeing as how it runs fine for a bit after a battery disconnect.... & I'll tell you from experience that a bad CPS will not always throw a code. It didn't for me

Ok thanks again man!!!

Shelbydog! · August 6th, 2011, 07:52 PM

Man, I hate taking things to a mechanic but that may be your best bet. Definitely keep us updated.

Jobra98 · August 6th, 2011, 09:18 PM

ill let everybody know what the shop says monday or tuesday!!

keep pointing out something i might have missed please!!!
ALL INFO HELPS!!

spaseghost · August 6th, 2011, 11:36 PM

the easiest way to check for a vaccum leak is to spray some brake-kleen around the engine and intake area, and see if the idles changes. if it does you have found the leak. but given it changes with ecu reset, i would say just take to a dealer and have them diagnose it. hell, i didnt put my wire on the plug for cylinder 3 all the way and i never got a cel, but it ran like dick till i put it back on. if the sensors are still sensing properly, you wont gt a cel.

August 6th, 2011, 05:08 PM	#5
Loki Enthusiast 1996 V6 Join Date: Feb 2011 Location: Connecticut Posts: 632 iTrader: 0 reviews	Stupid question, but have you checked your air filter? Lol Sounds like you're having an air or fuel problem somewhere.. Or maybe one of your fuel injectors is bad/clogged? __________________ 1996 3.8L.. Split Port Swap, CAI, True Dual Exhaust, the car accident mod. Need cheap parts? CLICK MEEEEEEEEE!! =]

August 6th, 2011, 05:49 PM	#6
Jobra98 95 5.0L COBRA 95 COBRA Join Date: Jul 2011 Location: Ridgeland, Mississippi Posts: 149 iTrader: 0 reviews	...air filter is ok. im about to point the finger there (injectors). I thought it was a fuel/air ratio problem too?! but again why would it go back to running great after battery disconnect? Ive checked almost all things to test?! lol I guess i need to learn about Fuel Injectors LOL Any one Else?! Thanks guys so far so good! __________________ Not All Who Wander Are Lost.

August 6th, 2011, 06:29 PM	#7
Stang6899 Hardcore Enthusiast Modded V6 Join Date: Sep 2006 Location: Mukilteo WA Posts: 1,466 iTrader: 1 reviews	CEL (check engine light) on? __________________ 1999 e46 328i BMW - Daily Driver 2001 SVT Cobra - Project 1995 v6 vert - SOLD 1996 v6 vert - SOLD 1995 v6 vert #2 - SOLD 1995 GT - SOLD 1997 v6 coupe - Parting

August 6th, 2011, 06:36 PM	#8
Jobra98 95 5.0L COBRA 95 COBRA Join Date: Jul 2011 Location: Ridgeland, Mississippi Posts: 149 iTrader: 0 reviews	No Sir! Had on because of back o2s. added mil eliminator (no cat) and bunny tailed o2s to trannie. No Light No Cat No O2s Weird ain't it LoL __________________ Not All Who Wander Are Lost.

August 6th, 2011, 07:01 PM	#11
Jobra98 95 5.0L COBRA 95 COBRA Join Date: Jul 2011 Location: Ridgeland, Mississippi Posts: 149 iTrader: 0 reviews	second person who said that! CPS, the other guy said it it was that it would throw a code. --per orilys. My pipe sound like 302 pur. but getting back to the point if it was the timing wouldnt it throw codes and how can it magicly be back on tims? hmmm did you watch video? Q: can timing bog down engine when in R or D and heavier with A/C on? *thanks, Joe __________________ Not All Who Wander Are Lost.

August 6th, 2011, 04:09 PM	#3
Jobra98 95 5.0L COBRA 95 COBRA Join Date: Jul 2011 Location: Ridgeland, Mississippi Posts: 149 iTrader: 0 reviews	Yes IAC thank you, Cleaned throttal body with cleaner without squirting it IN the body (finger cleaned it) the vacs comming from EGR valve area dont leak when i blow through them. If it could be a vac leak why do you think i can reset ECU and it work great for a day or so?

August 6th, 2011, 04:53 PM	#4
Jobra98 95 5.0L COBRA 95 COBRA Join Date: Jul 2011 Location: Ridgeland, Mississippi Posts: 149 iTrader: 0 reviews	RE- checking vacs.. anything else?

August 6th, 2011, 07:02 PM	#13
Shelbydog! MM sticker peddler slowmatic Join Date: Jun 2011 Location: OK Posts: 1,795 iTrader: 4 reviews	So, correct me if I'm wrong, but the idle hops when the ac is on, and it drives like crap with the ac on? I'd say its the ac. Maybe the clutches in the ac unit are grabbing or worn out? Try running a short belt to bypass the ac, and see if it runs any better. That would isolate the prob to the ac. That's the only thing i can think of.

August 6th, 2011, 07:07 PM	#14
Jobra98 95 5.0L COBRA 95 COBRA Join Date: Jul 2011 Location: Ridgeland, Mississippi Posts: 149 iTrader: 0 reviews	another guy said that too but then he said that i f it was that then disconnecting battery and letting ECU reset would not make it work again. It does this not all the time, the A/C load was just to heavy down engine so you could hear how it sounded. but i WILL try that! Thanks, Joe __________________ Not All Who Wander Are Lost.

August 6th, 2011, 07:52 PM	#18
Shelbydog! MM sticker peddler slowmatic Join Date: Jun 2011 Location: OK Posts: 1,795 iTrader: 4 reviews	Man, I hate taking things to a mechanic but that may be your best bet. Definitely keep us updated.

August 6th, 2011, 09:18 PM	#19
Jobra98 95 5.0L COBRA 95 COBRA Join Date: Jul 2011 Location: Ridgeland, Mississippi Posts: 149 iTrader: 0 reviews	ill let everybody know what the shop says monday or tuesday!! keep pointing out something i might have missed please!!! ALL INFO HELPS!! __________________ Not All Who Wander Are Lost.

August 6th, 2011, 11:36 PM	#20
spaseghost Regular It makes my wife horny 16.3@84@5kft Join Date: Apr 2007 Location: Grand Junction, Colorado Posts: 257 iTrader: 0 reviews	the easiest way to check for a vaccum leak is to spray some brake-kleen around the engine and intake area, and see if the idles changes. if it does you have found the leak. but given it changes with ecu reset, i would say just take to a dealer and have them diagnose it. hell, i didnt put my wire on the plug for cylinder 3 all the way and i never got a cel, but it ran like dick till i put it back on. if the sensors are still sensing properly, you wont gt a cel. __________________ 2003 Mustang - 3.8, 5spd., bbk, eibach no isos, duals, hids, 72k 1968 RS/SS Camaro - 350, .090 over, .500" lift, flows, M21 2004 Nissan Armada - HIDs, LEDs, sippy and DVDs 2002 F150 - Screw, 5.4l, GOTTS w/ K&N, flow super 44

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