[dliverance]

Here's the rundown, last night I was driving my car under normal conditions (slow but entering boost every now and then) and the car started acting strange. It wouldn't rev past 4k and when it got close to 4k the tach went crazy and it started popping and losing power.

The first thing that came to mind was spark plugs but after thinking on it for a while I think it could also be the CAS, coil pack or maybe the ECU.

Background on the car...It's a 99 with a diypnp, 8psi, 7mge 305cc injectors, ngk cold plugs gapped at 40(I know this is stupid and will be re-gapping them to 30 soon), 93 octane always, walbro 190, new plug wires and a fairly conservative tune.

Just looking for a few opinions before I start changing out crap that doesn't need to be changed.

 

[2ndGearRubber]

I would guess spark issues. 99s were know for coil pack issues.

 

[mini_FD]

But coilpacks cause a misfire. A crank angle sensor wouldst even allow the car to start. Ecu maybe and definetly the spark plugs. Regap those

 

[dliverance]

I was talking about my came sensor.

 

[mini_FD]

I might have a spare

 

[dliverance]

Once I get off my ass here I'm going to go get some spark plugs. That's if the parts store is open on Easter Sunday.

 

[BobMunob]

Doubt its plugs. Sounds like a sensor sending a false signal. I'm gunna say cam sensor.

 

[carlosvasquez]

Your CAS connecting clip might have a breaking cable. 4 little cables comming off the clip I think (for NAs at least) happened to me. Got to the point where the ground wire comming off the clip broke completely along with mother one and caused my car not only crank and not start. Worth a check.

 

[Doppelganger]

I had plugs go bad and sound just like that.
.040" gap is huge for stock coils.

 

[dliverance]

I got new plugs but I won't have time to install them until Thursday.

 

[HELLIONMX5]

check your tps. I had a problem similar to yours years ago.

 

[dliverance]

This bolt was loose lol. It holds the ground for the cam sensor.

 

[batou]

that's crazy. one little ground can mess with your whole... week? =\

Glad you fixed it!

 

[dliverance]

Yeah I got some Toyota cops to eliminate the coil pack and when I was checking my harness to see if it was the same I came across the loose bolt. At first it didn't register but when I saw the three black wires going to it I immediately assumed one was for the cam sensor. Needless to say I felt like an idiot.

 

[clos561]

put some red loctite on dat bi

 

[BobMunob]

Told ya it was sensor related! And red loctight is bad! Blue is he way to go if you vr wanna take it loose again.

 

[Hyper]

that's crazy. one little ground can mess with your whole... week? =\

Glad you fixed it!

Great post, I am going to check the CAS ground on my car cause I am getting ECU codes on the same thing.