So I took my OEM brown ISC out and found an open between pin 5-6 so I ordered a Rock Auto replacement. Tested for opens or shorts on the new one and was good, after install it would idle very high (1500-1700) and does not drop even after a drive. I have messed with the BISS and have it all the...

My 91 laser rst started to idle erratically when cold ( 1500-2300 rpm) and since it started doing that the car also accelerates fine to about 3500 rpm and then then the car gets very sluggish and feels like it’s holding back, it usually flies at 3500 rpm. I’m still building boost and my a/f...

Hi everyone!So, I have '91 Galant GTI-16V which I recently got and I've been battling some wiring and mechanical issues since I got it. One of my main problems is my weird idle which I'm in the process of fixing (cleaned the horribly dirty IAC stepper motor, cleaned the throttle body, adjusted...

Hello, This is a "crosspost" with my post on the ECMlink forums, I thought I'd ask here as well to maximize exposure.I am having some issues with my car, it's a 1995 GSX with a basic 2.0 7 bolt, Wiseco 8.5:1 pistons/eagle rods and crank bottom end, (built by me - first engine I've ever built...

I'm about to diagnose an idle surge issue with my '92 Talon TSi and will be thorough given the age of the car, and use the opportunity to replace aging parts even if they're not yet failing, e.g. gaskets, o-rings, hoses, etc. I intend to remove the throttle body to inspect it and the various...

Hey guys, So I recently got a 1995 eclipse gst with a 6 bolt thats fully built. Over $15k of upgrades in the car and I paid $2900 for it.It didn't have a timing belt on it when I bought but after being timed I got super lucky cuz it didn't have any valve damage.Shes running now but I'm...

I have a 1997 gsx. Car is mostly stock, i have been having trouble getting the monitors to set. I used to have a check engine light. I replaced both O2 sensors and check engine light is no longer coming on, but monitors still wont set. I also replaced the fuel filter, spark plugs and also...

Hi guys, first of all, I apologise for dumb questions and bad English, I’m a non-US based newbie. Aside from the Chilton manual, this forum has been my only source of info. I’ve tried my best searching, so please link me to threads if I’ve missed something. I have the Euro version of the 2G -98...

Just bought a 1998 GSX manual that has an ECM link V3 HX35 1200cc injectors FPR not sure about the fuel pump but it was upgraded i think since it made 400 wheel on the dyno. The story so far is the car has been sitting in a garage for 5 years and i bought it from this girl who owned it that...

Hey guys, I've recently got my copy of ecmlink along with the ecu. I've read through all the instructions. I've set my 3" gm maf, my 580cc injectors. My original ecu I had before switching the car would idle high on first start up then as it warms up it would gradually come down and settle at...

Hoping to make sure I'm looking in the right places to diagnose this issue, any suggestions appreciated.Issue: At warm idle the motor almost feels like it is stumbling. From the engine bay it sounds ok (no loud noises or vibrations), but the vibration in the cabin feels really rough. Even with...

This might be a little lengthy so I apologize in advance, but I want to give everything I know so far. I've been through about 20 idle threads by now but I just wanted to see what advice I might benefit from as well that wasn't already included in most threads.For starters, almost everything...

Hello everyone! I will skip the storys and get to the point (if you want 'em, let me know). I posted this on DMStalk, now here to increase my feedback chance:I got a 93' Eclipse 2.0L 4G63 DOHC N/A 152.000 KM and after sitting for about 3 years it has the following issues: 1. rough idle: RPM...

Been tackling a few issues I've solved some things and others still havent figured out yet.At high RPM at 15 psi my car would hit what feels to be fuel cut. So I rewired and installed a walbro 190 and it still seems to have the same issue.Sometimes usually when the car is warmed up it will...

hello, I have a 93 GSX 67,000 miles, it is stock except for an old HKS vein pressure controller (SD) system. When the car is cold soaked the idle surges bad and almost stalls. However, when the engine warms up the surge disappears and everything is normal. The first thing I did was remove the...

Since my idle increased after installing these I'm almost certain this was the reason lol. Fully warmed up my idle is around 1500, prior to install my idle was probably around 800. Could this also be due to my blown turbo though? I'm thinking about leaving the FP exhaust manifold on but changing...

So my car is supposed to go to the dyno next week but all of a sudden it begins to have starting/idle issues, which is nothing new really. I've had to deal with idle surge plenty of times but there are a few other things going on that make me want to ask some questions even if they seem dumb...

Not sure what to call this other than moody bogging issue. Ever since I bought my 1999 GST my car has had a really weird bogging problem. I start the car and it runs fine and normal for a few minutes, but then the RPMs drop super low and it starts idling really really rough like it's having a...

After chaging injectors to 550cc and installing a aem fic6 and properly calebrating the tps and rpms with fic car does not idle i have to give it gas and hold the acelerator down. no clue if its a egr problem or a lack of knowledge of tunning. casr is a 98 eclispe gs manual.

Hey guys. So ive been having some real trouble with idle surge over the past month or 2. I followed terrys idle surge guide to a T and still had found nothing so I post this in hopes it may help someone... I had tried everything except a full fiav block off. IAC, TPS, wiring, etc... So finally i...

Not sure if this is the correct spot for this but....I just installed a freshly built motor into my spyder with the same injectors that came out of the old motor. Car starts and idles great and would seem to be right around 14.5 but when I give it a rev it dips down to below idle speed and...

Car runs fine under load, and even when you start it for the first 5 or so seconds when idle is high, When idle settles at around 850 you can really feel the engine vibrations and misfire. The Galant is running and driving but the vibration is extremely worrying, at stop and go traffic the idle...

I know this has been covered thousands of times on here but ive gone down the checklists and nothing really seems to be working...91 talon tsi awdHaveing really bad idle surge issues. Performed boost leak test and fixed leaks but it hasnt changed the idle a bit. Changed tps, isc, and even...

I'm about at my wits end with this problem.Car is a 91 TSi AWD, all stock except for ecmlink and a wideband.The car makes no attempt to speed up the idle when you kick the a/c on. Normal idle is perfect at around 800rpm, it drops to about 500 with the a/c.I put the car in diagnostic mode...

I will start by saying that I have already replaced the TPS. It threw a code for the TPS last year and I resolved it, and it hasn't came back. I have new plugs and plug wires, new coil pack as well. So my question is why do the rpm's fluctuate when I am at idle? The tac usually moves from 700...

So long story short, I’ve been chasing an ISC issue in my car for several months on and off. I remove the ISC from the car and turn on my power, the ISC just vibrates. This goes for all 3 of the ISC motors I’ve tried. With the car running, the ISC motor starts at 120, slowly descends to 0, then...

As you can see in the attached log, my fuel trims are all messed up and the car idling in closed loop the a/f ratio ranges from the high 12's to low 16's. I've messed around with my global fuel (currently running low impedance RC 1200cc's, tried using the value of 1200 in injector calculator as...

Hi everyone, I have a strange problem that i am running out of ideas and have tried everything i can think of. I'll try to give as much info as possible.Car: '98 gsx, stock basically some bolt ons.Problem: it's odd I'll try my best to explain. it's running very rough and seemingly not firing...

hey guys I need some help wondering why my car high idles when it gets hot. It will start at 1500 when it reaches normal temperature but when I drive for 5 minutes longer it will idle at 2500-3500 rpm. The temperature sits in the middle and doesn’t over heat, I’m really confused....I bought...

I've been feeling like my 14b 2g was lacking in the power department. So I started looking around for problems and I found that my hks bov was spinning freely on the flange. I took the o ring out and installed it with the snap ring only. It's super tight on there now and tested it for a boost...

My car shut off on me the other day while driving , good thing I was around the corner from the house. I turned it on and it was horrible , It idles at 450 rpm and Goes slightly to 500 then drops to 150 , barely staying on , you can go into gears but if you push the pedal a little too much it...

I have a 98 Eclipse gst with 127k miles that has really weird idle surge When u start the car will idle surge Minorly not bad and will do it for a while and randomly spike up to 2k rpms then settle at around 1k rpms where it’s supposed to be (depending on how cold it is outside) but if u tried...

so here’s the deal,Whenever I start my eclipse it idles really bad and almost stalls until about 5-10 minutes later the idle jumps and idles regular. I can’t drive it until the idle spikes so it sucks. I’ve researched it a bit and it seems that what I need to do is block my FIAV. I found a...

I recently replaced my turbo on my 98 eclipse gst I had bought the car with a bad turbo and only drove it once before buying and taking it home and taking it apart. I got it running but it is running super rich and really bad at idle. Is idles at about 800 rpms but sometimes idles at 1000...

It'll rev to 2k - 2.5k it will sometimes surge up and down between 900 and 1500 random at stoplights on occasion. Codes P1105 P1103 P0505. P1105 only code being active.Has anyone had this issue and remedied it?I did a boost leak test on it 2 weeks ago. And this has been going on for over a...