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+---- Thread: 5.0 EFI idle issues? (/thread-1974.html)
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5.0 EFI idle issues? - blazinchuck - 11-20-2009
ok now that ive been running the bronco since Thurs 12th...ive notice the motor is running a touch rich...no smoke tho. also when im trail riding, no issues. but, when i drive a short or long distance above a certain rpm...when i come to a stop(ie. traffic light,stop sign,etc.) it takes a good 20-30secs. before it will come back to the set idle. this is kinda aggrivating since it makes down shifting a pain. can anyone give me some thoughts on this.
motor is a 91 mustang 5.0 HO, a9l computer,rjm harness,egr delete, new o2 sensors,new coil,wires,plugs. thanks,Chuck
5.0 EFI idle issues? - JayT - 11-20-2009
TPS? Although seems like that'd give you more trouble than this...
5.0 EFI idle issues? - SC74 - 11-20-2009
Air Charge Temp or MAF sensors??? Have you cleaned the MAF with some non contact cleaner?
5.0 EFI idle issues? - bucketobolts - 11-20-2009
Do you run a vehicle speed sensor?
5.0 EFI idle issues? - GOODOLEBOY84 - 11-20-2009
id go with bucketofbolts, you need the vss it tells the engine when you are stopped, moving, slowing down, it will also cause your slight running rich problem
5.0 EFI idle issues? - blazinchuck - 11-20-2009
i do have a used VSS installed, i never cleaned the MAF(look ok according to chuzie) the air charge is used as well. we adjusted the tps when we got it going.
5.0 EFI idle issues? - bucketobolts - 11-20-2009
What is your base timing set at?
5.0 EFI idle issues? - blazinchuck - 11-20-2009
we set it stock, i think around 12-14btc
5.0 EFI idle issues? - bucketobolts - 11-20-2009
Stock should be 10* BTC. But 12-14* shouldn't be excessive.
When it returns to normal idle what is the rpm?
5.0 EFI idle issues? - blazinchuck - 11-20-2009
no clue, my monster tach bit the dust...i have to replace or fix it