throttle/idle problems

NoDOHC · 05-10-2011, 09:24 PM

This could be simple but is likely not so. How well does the car start?

When you say choppy throttle, do you mean that the engine misfires when you move the throttle? Does the engine rev quickly?

My initial thought is that you have a vacuum leak, but I am not seeing how that would relate to the blown EGI fuse. I am hoping that you weren't boosting when the EGI fuse went out.

You should check compression at some point if the car is hard to start. If it starts easily, compression is not likely to be the issue.

sometimes a rich smell is an indication of lean misfiring. You might also check fuel pressure, but I don't think that is the issue.

j0riakh1 · 05-11-2011, 01:25 PM

by choppy i mean it sort of misfires. sorry i wasnt as specific as i should have been.

The EGI fuse is fine now. however, i finally got the engine to hold an idle yesterday, but it only idles 2k and up. Any lower than that and it dies out quickly. the cars temp is also about half instead of its normal quarter now. my fuel pressure is at 40 in idle, cant say what it is under a lod because i cant really put someone in my hood lol. i have a feeling there could be a vaccum leak too, due to the fact that as the car runs, it just doesnt sounds the same. but i have no idea where to start looking.

05-10-2011, 09:24 PM	#1
NoDOHC The quest for more torque Join Date: Sep 2008 Location: Sheboygan, Wisconsin Posts: 855 Rep Power: 18	This could be simple but is likely not so. How well does the car start? When you say choppy throttle, do you mean that the engine misfires when you move the throttle? Does the engine rev quickly? My initial thought is that you have a vacuum leak, but I am not seeing how that would relate to the blown EGI fuse. I am hoping that you weren't boosting when the EGI fuse went out. You should check compression at some point if the car is hard to start. If it starts easily, compression is not likely to be the issue. sometimes a rich smell is an indication of lean misfiring. You might also check fuel pressure, but I don't think that is the issue. __________________ 1986 GXL ('87 4-port NA - Haltech E8, LS2 Coils. Defined Autoworks Headers, Dual 2.5" Exhaust (Dual Superflow, dBX mufflers) 1991 Coupe (KYB AGX Shocks, Eibach lowering springs, RB exhaust, Stock and Automatic)

05-11-2011, 01:25 PM	#2
j0riakh1 The Newbie Join Date: May 2011 Location: jacksonville, nc Posts: 11 Rep Power: 0	by choppy i mean it sort of misfires. sorry i wasnt as specific as i should have been. The EGI fuse is fine now. however, i finally got the engine to hold an idle yesterday, but it only idles 2k and up. Any lower than that and it dies out quickly. the cars temp is also about half instead of its normal quarter now. my fuel pressure is at 40 in idle, cant say what it is under a lod because i cant really put someone in my hood lol. i have a feeling there could be a vaccum leak too, due to the fact that as the car runs, it just doesnt sounds the same. but i have no idea where to start looking.