This is topic Explorer intake operating range maybe fuel issues? in forum Tech Talk at Northern California Ford Owners  .


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Posted by Mach 5oh (Member # 9497) on 2011-12-28 01:41 PM :
 
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.
 
Posted by Mach 5oh (Member # 9497) on 2011-12-28 01:45 PM :
 
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.
 
Posted by Marks93 (Member # 11130) on 2011-12-28 02:16 PM :
 
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?
 
Posted by copcar (Member # 10113) on 2011-12-28 04:07 PM :
 
Timing? Fuel filter changed in a while?

[ December 28, 2011, 04:08 PM: Message edited by: copcar ]
 
Posted by SmallBlock Speeder (Member # 11220) on 2011-12-28 06:37 PM :
 
So no misfire just seems weak?
 
Posted by Mach 5oh (Member # 9497) on 2011-12-28 06:49 PM :
 
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.
 
Posted by Mach 5oh (Member # 9497) on 2011-12-29 12:15 PM :
 
bump
 
Posted by norcalfiddy (Member # 11207) on 2011-12-29 12:33 PM :
 
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.
 
Posted by Mach 5oh (Member # 9497) on 2011-12-29 12:54 PM :
 
Yea I need to find one of those that hooks onto a shrader
 
Posted by MACK.GT (Member # 10461) on 2011-12-29 02:31 PM :
 
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.
 
Posted by Mach 5oh (Member # 9497) on 2011-12-29 02:42 PM :
 
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.
 
Posted by Mach 5oh (Member # 9497) on 2011-12-30 09:51 PM :
 
anyone else got some input?

[ December 30, 2011, 09:58 PM: Message edited by: Mach 5oh ]
 
Posted by norcalfiddy (Member # 11207) on 2011-12-30 10:25 PM :
 
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..
 
Posted by Mach 5oh (Member # 9497) on 2011-12-31 12:29 AM :
 
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.
 
Posted by Mach 5oh (Member # 9497) on 2011-12-31 02:21 PM :
 
Video of a some noises i have has been added,also. Smog pump?? http://www.youtube.com/watch?v=WF1YoeVoo3I&list=UUt1e0gRGfhZHnRIoLo9Tj-g&index=1&feature=plcp
 




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