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Author
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Topic: Explorer intake operating range maybe fuel issues?
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BruhBrahBrad
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Member # 9497
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posted
 
 
Anybody got an Idea, of where it shines? I feel like I have a serious mismatch of parts going on with my intake and cam...cam is unknown, intake is 90's explorer. I have 373 gears, and crusing around the lower rpms feel really soft, like theres no put you in your seat about it. And when I rev it out, it feels like it doesnt pull in the upper rpms...I've been wondering if I'm needing to replace my FP because I get a 556 code. This car feels like it does best in the mid-range, but thats not really a great medium on the street, cause I cant launch on the ricers in the cold, so Im spinning, but I cant pull em up top either. I feel like theres something wrong. And yes I know the heads are the biggest drawback but its not in the cards right now.
car is a 94 gt.
Posts: 1241 | Registered: Sep 2009
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BruhBrahBrad
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Member # 9497
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posted
Also i feel like, when I had 273s the stock intake felt faster, and it felt like it had more torque I cant comment on a stock intake with my new rear end though.
Posts: 1241 | Registered: Sep 2009
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Marks93
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Member # 11130
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When you changed out the intake, did you upgrade to a 65mm TB (or bigger)and bigger MAF? I did those 3 together and saw a nice gain. I'm running stock heads, cam and bottom end. 3.55's in the back and it pulls fairly well 2000-5000 rpm. With 3.73's, yours should be comparable to mine.
Check all vacuum hoses are connected?
No leaks between upper/lower intake...bolts torqued?
Posts: 824 | From: Earth | Registered: Jul 2011
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copcar
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Member # 10113
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Timing? Fuel filter changed in a while?
[ December 28, 2011, 04:08 PM: Message edited by: copcar ]
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12.37@ 109.34.NA 894DA Old Nitto 555 DR's Gt40 irons. B cam/1.7's, All emissions equipment on the car, stock air box. UPR catted X pipe.
Posts: 485 | Registered: Jun 2010
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BruhBrahBrad
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Member # 9497
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posted
I still have the stock maf, but my car came with a bbk 65mm tb...it doesnt feel like a misfire. there are times where if im cruisin in 5th and I kick it down to 4th and gun it, I get nothing for a second and it scared me so i didnt continue. it felt like complete 0 power. I changed the fuel filter about a month ago....last time I checked, I had my timing at 13-14 degrees.
All vacuum is connected.
yea no misfire just seems really weak, especially when I take it up to 5k.
It almost feels like the cam that was installed into my car, is a high rpm cam, and the intake is low rpm flowing range. because driving around town, It just feels real soft unless you bring it up to like 28-3k. and after like 4.5k it feels like its dead no more pull.
Posts: 1241 | Registered: Sep 2009
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norcalfiddy
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Member # 11207
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well if your getting that FP code, id throw in a new FP and see if its better.
or hookup a fuel psi gauge and see what its at before droppin the tank.
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600HP 1996 7.3L powerstroke single cab short bed race truck
Posts: 3393 | From: Brentwood | Registered: Aug 2011
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BruhBrahBrad
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Member # 9497
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Yea I need to find one of those that hooks onto a shrader
Posts: 1241 | Registered: Sep 2009
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MACK.GT
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Member # 10461
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Check the spark plugs lately ? Clean maf? Could be so many things. I'd start with the plugs, fuel pressure test , then compression test, vacuum test, charging system test.
Posts: 446 | From: 510 | Registered: Nov 2010
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BruhBrahBrad
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Member # 9497
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Could my charging system hae something to do wit my power up top? I dont got the stuff to do the other tests besides maf and plugs.
Posts: 1241 | Registered: Sep 2009
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BruhBrahBrad
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Member # 9497
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posted
anyone else got some input?
[ December 30, 2011, 09:58 PM: Message edited by: Mach 5oh ]
Posts: 1241 | Registered: Sep 2009
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norcalfiddy
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Member # 11207
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aye brad, kragens or autozone rents out those fuel psi gauges. you leave a deposit there and when you bring it back they give you your money back.
i also have gauges to check your compression if you wanna come by and get one..
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600HP 1996 7.3L powerstroke single cab short bed race truck
Posts: 3393 | From: Brentwood | Registered: Aug 2011
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BruhBrahBrad
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Member # 9497
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Shiiiittt if I still lived out there I would be on that. im gonna see if kragen rents it out down the street from me tomorrow. I wanna get one to just permanently mount on the schrader so i always can know.
Posts: 1241 | Registered: Sep 2009
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