Having running problems? Don't make my mistake

Post by **articzap** » Sun Oct 12, 2008 3:50 pm

So for a while I was having problems with my car. I knew its always been running rich but I always have very weird and odd symptoms of rough idle. No acceleration at times. Well my buddy Jay showed up yesterday to pick up some tires for drifting. I start it up for him. It sounds like its running on 3 cylinders and the vacuum is jumping between -10 and -15 inHg. So I pop the hood and hes looking around. Hes like it doesn't sound like its missing like I always thought. So he grabs the wires the I extended for the MAF and jiggles them. And what do you know, the car runs perfect. I had -20 inHg vacuum. Well I tore it apart today. And what caused these ****ty connections?

Me thinking it was ok to just twist the wires together and tape them. Oppps.

Lesson learned. ALWAYS solder connections.

Post by **ca18detgabby** » Sun Oct 12, 2008 5:09 pm

crazy. such stupid little things can funk you over.

Post by **r34 gtr** » Sun Oct 12, 2008 5:23 pm

Solder, then heat shrink, then electrical tape.

Post by **articzap** » Sun Oct 12, 2008 5:35 pm

That's what I did this time.

Post by **DALAZ_68** » Sun Oct 12, 2008 8:55 pm

articzap wrote:So for a while I was having problems with my car. I knew its always been running rich but I always have very weird and odd symptoms of rough idle. No acceleration at times. Well my buddy Jay showed up yesterday to pick up some tires for drifting. I start it up for him. It sounds like its running on 3 cylinders and the vacuum is jumping between -10 and -15 inHg. So I pop the hood and hes looking around. Hes like it doesn't sound like its missing like I always thought. So he grabs the wires the I extended for the MAF and jiggles them. And what do you know, the car runs perfect. I had -20 inHg vacuum. Well I tore it apart today. And what caused these ****ty connections?

Me thinking it was ok to just twist the wires together and tape them. Oppps.

Lesson learned. ALWAYS solder connections.

f*ck me...im at 20- Vac at idle...im assuming its suppose to be 15 or so

im not joking here

Post by **articzap** » Mon Oct 13, 2008 2:26 am

-20 inHg at idle is a really good running motor. -18 inHg is a motor thats starting to get worn down. Less then that and a rebuild should be considered.

Post by **sjbsuperman1425** » Mon Oct 13, 2008 2:46 am

articzap, i somewhat agree with you, but a good running motor can have idle anywhere between 17in/hg to 21in/hg. dont get me wrong that 17 is still kind of low, but its not to the point where you would have to rebuild your motor, if that is what you are saying

and just to say something on my note, my car starts up 100% everytime, idles at 1500rpm for a few seconds to 1 minute tops, then idles at a steady 800 - 1000rpm (set by me), and has a vacuum of no less than 17in/hg. It has none of the cold start problems that everyone talks about. its crazy lol and i do live in a cold climate, Michigan

but yes, ALWAYS solder connections lol

Post by **r34 gtr** » Mon Oct 13, 2008 5:18 am

Ha! I get like 10in/hg cold, I win!!

Post by **sjbsuperman1425** » Mon Oct 13, 2008 6:58 am

congrats r34 gtr, you are the winner of a cold start issue CA18DET!! lol oh how these engines are just bundles of joy!!

Post by **ca18detgabby** » Mon Oct 13, 2008 7:15 am

sjbsuperman1425 wrote:congrats r34 gtr, you are the winner of a cold start issue CA18DET!! lol oh how these engines are just bundles of joy!!

Tim is totally the "winner".......the people at the special olympics gave him a medal and everything.

Post by **ca18detgabby** » Mon Oct 13, 2008 7:16 am

r34 gtr wrote:Solder, then heat shrink, then electrical tape.

you electrical tape the heat shrink? isnt that kind of over kill?

I guess maybe, better safe than sorry?

Post by **r34 gtr** » Mon Oct 13, 2008 8:31 am

Ive had water get in there once or twice, just not worth the risk. makes it so I can pressure wash the engine bay with prejudice.

For the record I have ZERO cold start issues. Fires up first crank every time and idles so solidly at 900rpm you could set your watch by it...if one could do that. MAP/IAT sensor setup ft-dub.

Post by **beans33** » Mon Oct 13, 2008 9:18 am

I need get with you tim and see how you set up your cold start for MS ? Mine idles rough on cold starts , but when warmed up is fine.

Post by **r34 gtr** » Mon Oct 13, 2008 9:53 am

I'll be glad to help. My car starts and idles like a champ. Its the WOT that sucks.

Post by **bentvalves** » Mon Oct 13, 2008 12:49 pm

hahaha wtf the most important part dangit.

Tim, how drunk are you as you read this right now?

Post by **r34 gtr** » Mon Oct 13, 2008 2:28 pm

None! I am a bit toweled up though. Want to tune my car for me? I suck at it and I'm far too poor to afford a professional tuning job.

Post by **DALAZ_68** » Mon Oct 13, 2008 4:30 pm

articzap wrote:-20 inHg at idle is a really good running motor. -18 inHg is a motor thats starting to get worn down. Less then that and a rebuild should be considered.

yeah shes at a constant 20- at idle...i only have issues in the cold....LOL--freakin aye...but i love my motor...i mights sell my s13....but im keeping the motr....i just hope it doesnt happen

YouTube · Post by **MeanGreenS13** » Mon Oct 13, 2008 4:57 pm

on my harness, where we shortened it, you will find every joint soldiered, and heatshrinked, and then 0 gauge heat shrink around 2 chunks of the harness to hold all the connections tight, and then 3 pieces of electrical tape holding them together

no bad connections for me =P

Post by **DALAZ_68** » Mon Oct 13, 2008 5:30 pm

MeanGreenS13 wrote:on my harness, where we shortened it, you will find every joint soldiered, and heatshrinked, and then 0 gauge heat shrink around 2 chunks of the harness to hold all the connections tight, and then 3 pieces of electrical tape holding them together

no bad connections for me =P

yeah when i pull the motor im deffinetly cleaning up the mess of harness wire i have

Having running problems? Don't make my mistake

Having running problems? Don't make my mistake

Re: Having running problems? Don't make my mistake (articzap)

Re: (r34 gtr)

Re: Having running problems? Don't make my mistake (articzap)

Re: Having running problems? Don't make my mistake (DALAZ_68)

Re: Having running problems? Don't make my mistake (articzap)

Re: (r34 gtr)

Re: (sjbsuperman1425)

Re: (r34 gtr)

Re: (r34 gtr)

Re: (r34 gtr)

Re: Having running problems? Don't make my mistake (articzap)

Re: Having running problems? Don't make my mistake (DALAZ_68)

Re: Having running problems? Don't make my mistake (MeanGreenS13)

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