Let me start off with a little history on my car. I bought it last June with a little over 63k on it, completely stock from a 60+ y/o gentleman. Since then I've added the following modifications:
K&N FIPK
UPR O/R X
Flowmaster Catback
RR 2.65 upper pulley
Idler pulleys
Aux Ilder
New plugs (forget which ones)
Mail Tune and Dynoed for a/f reading (everything was within a few clicks of being perfect)
And other things that aren't "power"/motor related.
This past October, I had a bad idling problem, and my buddy told me it was my FRPS (Fuel Rail Pressure Sensor) I changed that as well as the oil at the same time, and since then (about 300 miles ago) everything has been fine, until this weird problem started.
Now the car has 67,500 miles. Monday night I met up with 4 of my buddies who also have 03-04 cobras, so the 5 of us decided to go for a cruise around downtown Pittsburgh. So the parkway ride was nothing but a few WOT blasts, nothing out of the ordinary. After cruising around for about a half hour, we park and take pictures. Then we drive about 20 mins to a gas station where a few needed gas. I shut my car off there, and to this point it was running 100% fine. I went to start my car up at the gas station, and it took a few extra cranks for it to start, and when it did, my whole car was shaking and the idle was REALLY ruff (best way to describe it would be like it was cammed up, almost stalling, but didn't). But at this point everyone was already leaving the gas station, so I called my buddy who was leading, and told him to pull over ASAP. So he did, I pulled up next to them in a parking lot and told them to shut their cars off and listen to mine. At this point, it was tapping so loud and idling so horribly, it sounded a bit like the dreadful TICK, and i left it running to do a little troubleshooting. I first unplugged the FRPS to see if that would help the rough idle, and it didnt, so I shut it off and checked my oil, fine. I started it back up, and same thing, took a few extra cranks, started up, rough idle and the ticking/clicking sound. I was so mad, I decided to just go home in the car, so I lead everyone in case I broke down, they could help me. I was sitting at a red light and all of a sudden, out of no where it just went back to the regular idle, and no ticking sound.
So I dont understand what this could be (and either can my 4 other buddies who have had their car for a while, 1 who had the tick on 2 motors, 1 who completely rebuilt one from a bad front end collision, and the other with other various problems, so they aren't rookies with these cars). It went from such a rough idle and horrible noises coming from under the hood, and BAM went right back to normal.
Now come to think of it, this happened to me about a week ago, I was sitting in a parking lot with my heat on, just talking to a few people, and out of no where, the idle got real rough, like it was cammed up, but I didn't hear a ticking/clicking sound, and i revved it, and a few minutes later it went back to normal.
What can this be? Any ideas? I don't want it to lead to something serious.
Thanks for your time if you read this, I appreciate it and look forwards to resolving this.
K&N FIPK
UPR O/R X
Flowmaster Catback
RR 2.65 upper pulley
Idler pulleys
Aux Ilder
New plugs (forget which ones)
Mail Tune and Dynoed for a/f reading (everything was within a few clicks of being perfect)
And other things that aren't "power"/motor related.
This past October, I had a bad idling problem, and my buddy told me it was my FRPS (Fuel Rail Pressure Sensor) I changed that as well as the oil at the same time, and since then (about 300 miles ago) everything has been fine, until this weird problem started.
Now the car has 67,500 miles. Monday night I met up with 4 of my buddies who also have 03-04 cobras, so the 5 of us decided to go for a cruise around downtown Pittsburgh. So the parkway ride was nothing but a few WOT blasts, nothing out of the ordinary. After cruising around for about a half hour, we park and take pictures. Then we drive about 20 mins to a gas station where a few needed gas. I shut my car off there, and to this point it was running 100% fine. I went to start my car up at the gas station, and it took a few extra cranks for it to start, and when it did, my whole car was shaking and the idle was REALLY ruff (best way to describe it would be like it was cammed up, almost stalling, but didn't). But at this point everyone was already leaving the gas station, so I called my buddy who was leading, and told him to pull over ASAP. So he did, I pulled up next to them in a parking lot and told them to shut their cars off and listen to mine. At this point, it was tapping so loud and idling so horribly, it sounded a bit like the dreadful TICK, and i left it running to do a little troubleshooting. I first unplugged the FRPS to see if that would help the rough idle, and it didnt, so I shut it off and checked my oil, fine. I started it back up, and same thing, took a few extra cranks, started up, rough idle and the ticking/clicking sound. I was so mad, I decided to just go home in the car, so I lead everyone in case I broke down, they could help me. I was sitting at a red light and all of a sudden, out of no where it just went back to the regular idle, and no ticking sound.
So I dont understand what this could be (and either can my 4 other buddies who have had their car for a while, 1 who had the tick on 2 motors, 1 who completely rebuilt one from a bad front end collision, and the other with other various problems, so they aren't rookies with these cars). It went from such a rough idle and horrible noises coming from under the hood, and BAM went right back to normal.
Now come to think of it, this happened to me about a week ago, I was sitting in a parking lot with my heat on, just talking to a few people, and out of no where, the idle got real rough, like it was cammed up, but I didn't hear a ticking/clicking sound, and i revved it, and a few minutes later it went back to normal.
What can this be? Any ideas? I don't want it to lead to something serious.
Thanks for your time if you read this, I appreciate it and look forwards to resolving this.
