PLEASE HELP

[b1gp1mp1n247]

i am getting 10-11 miles per gallon. i know that is extremely low. please help i have tried everything. also the car idles way too high, and is hard to start when motor is cold. please help. im open to anything.

 

[HISSIN50]

have you pulled codes? even if the CEL is not on, codes can be stored in KAM.

i would really look at a couple of things, given that im shooting in the dark here. check voltage/resistance outputs for the O2's, as well as the ECT and ACT sensors.

those are the big ones i can think of. did you idle go up when you lost milage, or was it like that before?
good luck.

 

[b1gp1mp1n247]

have you pulled codes? even if the CEL is not on, codes can be stored in KAM.

i would really look at a couple of things, given that im shooting in the dark here. check voltage/resistance outputs for the O2's, as well as the ECT and ACT sensors.

those are the big ones i can think of. did you idle go up when you lost milage, or was it like that before?
good luck.

it all pretty much happened at the same time. my idle started to get real ****ty and my gas mileage went down the ****ter with it. O2's are new. ect and act are not ill try that

 

[HaggardGT]

Did you check what your fuel pressure is at? I've seen pressure regulators crap out on people before, unfortunately it DOES happen.

 

[b1gp1mp1n247]

Did you check what your fuel pressure is at? I've seen pressure regulators crap out on people before, unfortunately it DOES happen.

regulator is new. its at 40psi

 

[b1gp1mp1n247]

any lower and it runs like complete A55

 

[HaggardGT]

Really? That's unusual. A friend of mine just went to the dyno with his '93 Cobra. He put the pressure back to stock from 38 or 39 and picked up 16 horses. Wierd.

 

[b1gp1mp1n247]

Really? That's unusual. A friend of mine just went to the dyno with his '93 Cobra. He put the pressure back to stock from 38 or 39 and picked up 16 horses. Wierd.

thats problably because he was running lean

 

[TheUser]

i'd say check tire pressures. Do you smell gas when you start it? Could be stuck injector. The 4.10's probably aren't helping any.

 

[Michael Yount]

No need to guess at it just yet - as hissin' suggested originally pull the codes before you go any further. AutoZone/PepBoys will usually do it for free. WalMart sells a scanner for about $20. Search for jrichker here or at corral - in his sig is a site that will tell you how to pull them with a test light and a paper clip - like MacGyver. See what the codes tell you before you needlessly replace parts that you don't have to.