Search Results for ‘rough idle’

So when I’m driving the car and it’s in 4th gear and I’m going around 40mph the car bogs down even on flat land. Not to mention when I let off the gas it backfires. But when the car is above 3500rpm none of the it runs better. Ive replaced the plugs, wires, distributor cap and rotor, injectors...

I own a 1992 3000GT VR-4. It has 160,000 miles. The car has some problems. It runs and drives and pulls fine but when I start it up on a COLD start it'll die out. The MAS is disconnected as when it's plugged in, it'll idle for a few minutes and stall. It only drives when I keep my foot on the...

Hello all, I know the SDT is quite new and there probably hasn't been a lot of experience tuning with it out there, but in the event some of you have become familiar or have had a similar problem, I'm hoping to find some guidance. Prelude: Two days ago I was running on an OEM MAF, driving and...

Hey guys, so I’m reaching out about my 1998 3000gt sohc. Recently did some maintenance on her, cleaned the intake plenum, lower manifold, and repainted the valve covers and then replaced the alternator. Got it all put back together with no problems, started it, other than a coolant leak it was...

Hello all I am having an issue with my 91 stealth dohc n/a. I am having an idle issue, after cold start it does fine idling to operating temperature but after I move the throttle is when 2 issues start. First if I let it idle after I have used the throttle it will start to drop from about 700 to...

Was olny boosting to 6psi since rebuild, did a leak down and the stalk bov was spewing air. Replaced it with a blitz bov. I was then boosting to 14 psi, and all of the sudden she ran like crap, afr is jacked, but sits at 14.7 on the high way. Did a leak down test and it is holding psi, it is...

I have a 91 tt with 46k mikes clean title. It won't pass CA smog for the idle test. It passes the 2500rpm part but not idle. The idle sounds rough when car is warming up. It's at the mechanic and they think it's either the O2 sensors gone bad or the mass air flow meter sensor. Not sure if this...

Hi everyone, I'm trying to troubleshoot an issue with my car. Any help or input would be appreciated. I'm working on my 1997 VR4. It's BPU, with 550cc injectors and an SAFCII with a tune, in addition to a handful of other mods in support of a possible future turbo upgrade. Right now, I have a...