This is topic Tuning problems in forum Tech Talk at Northern California Ford Owners  .


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Posted by 5.0#4 87 T-Top GT (Member # 1534) on :
 
ok here is the problem the car runs great but dies on decel at times and idle will sometimes surge and engine will die. All this started when new engine was put in with afr heads and e303 cam. everyone said it was a tuning problem so i dished out $475 to "BYRON" and I was to Get 30lbft og torque and 2hp and was suppost to run fine. so took car home and after the long drive home vehicle still ran like shit whats wrong?? up for any suggestions. [Confused]
 
Posted by section525 (Member # 2819) on :
 
I've read from a lot of different places that after installing an e-cam the motor will have a hard timing idling periodically for a few hundred miles. I actually just installed one a couple weeks back and every once in a while it will not idle while in gear. You can imagine what a pain this is since I have an automatic. That's why I only have about 10 miles on the cam so far. [Frown]

But I've heard some peoples need up to 1000 miles! [Eek!]
 
Posted by 5.0#4 87 T-Top GT (Member # 1534) on :
 
Well I just raised the idle a little and it seems to be better but The reson it was lowered in the first place was because the engine ran really rough at around 1000-1200 rpm range but with turndowns on it now it is not as noticable we'll see how it goes from here.
 
Posted by Sean90GT (Member # 33) on :
 
Let Byron know and have him address the issue. He'll make it right.
 
Posted by Chosen1 (Member # 1906) on :
 
my guess (and im not an efi expert) is to try those IAC spacers that motorsport sells. i had a huge surging issue with one of my 5.0's and found that replacing the actual IAC didnt help much. with more of a high performance motor like yours, using the spacers would allow for more adjustment in the amount of airflow.
 
Posted by DropTopFox (Member # 1689) on :
 
my car runs cool with the e-cam but maybe that's cause I have like 50,000 miles on the cam [Wink]
 
Posted by BlueLightning302 (Member # 3974) on :
 
I have about 12,000 mi on mine and it still does that every so often, but most of the time it will idle about 900-950.
 
Posted by street_illegal_stang (Member # 1554) on :
 
maybe you adjusted the rockers wrong?
 
Posted by 5.0#4 87 T-Top GT (Member # 1534) on :
 
The adjustment I made seemed to work fine. The IAC adjuster plate is what I probably need to get. The rockers were adjusted 4 times thats not the problem, and mileage doesn't affect anything with a roller cam that is the reson people use roller cams. Thanks for the input.
 
Posted by 1SLOWLX (Member # 558) on :
 
what did the notch dyno at?
 
Posted by 5.0#4 87 T-Top GT (Member # 1534) on :
 
262hp 306 torque. told him he should of put a 347 in it or at least a 331, but its not my car.
 
Posted by 89saleen (Member # 3083) on :
 
Im fighting the same prob. with a 2031 cam. [Mad] What happens when you block off the IAC, besides the codes?
 
Posted by st5150 (Member # 51) on :
 
I'd check two things...

1) The VSS sensor

2) Your alternator/alterator power wire connections. Does your car get a full charge at idle? Loose nut on your starter solenoid? I had this problem give me the same symptoms you're having. Once was a loose nut, once was a dying alternator.
 




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