Topic: Help!!!! Car loads up when warm (Read 9431 times)

DelSlow · « **on:** September 02, 2009, 02:20:19 PM »

Need some help, got my turbo kit done last night. Started up just fine, ran just fine, no check engine lights, ripped on it for a hour or so. Then just cruising down the interstate it loads up, throws a check engine light on and wants to die. Only way to keep it running is in boost or ripping on it. It runs very rich once this happens. And now every time i start my car it runs great for about 30 seconds, throws the light and loads up. I read on H-T that if your ECT temp values are incorrect that it will run rich when warm, but i didn't touch that at all so im not sure if that would be the problem?

Better to have too much ECU/Chip information than not enough, wanna get this taken care of so if there is some info you need...let me know.

Mini Me
t25/log
DSM 450s/Resistor Box
Stock FPR
Stock fuel pump
Crome p28

Tim · « **Reply #1 on:** September 02, 2009, 03:13:21 PM »

so let me get this straght...

you threw a turbo kit on and proceded to beat on it for an hour and now it doesn't run right?

Did you have any kind of wideband on it or did you try to reat the plugs and tune it at all?

If not see cooljnate or whatever his sn is and his life lesson of blowing up his first setup.

DelSlow · « **Reply #2 on:** September 02, 2009, 03:29:57 PM »

I didnt beat on it for an hour, i drove it a bit with my friend who did a mild street tune just to make sure the basemap i had was working correct. I had a wideband in and everything was running perfectly normal until crusing it down the interstate. Now it idles a little rough, then when it warms up a bit it throws a code (which when jumping, ELD enabled/and disabled, wont read the code) and bogs pretty bad/runs really rich, and needs to be help at 2500/3000rpms + to stay running.

ratcityrex · « **Reply #3 on:** September 02, 2009, 04:09:14 PM »

Quote from: DelSlow on September 02, 2009, 02:20:19 PM

I read on H-T

^
#1 mistake right there. If you would have said I was reading on PGMFI.ORG I would feel better about it...lol

But When it throws the code dose it limit your rpms? Sounds like its going into limp mode. How did it run b4 you turboed it? Did it have any cel's then?

DelSlow · « **Reply #4 on:** September 02, 2009, 04:13:00 PM »

lol Yeah probly...

When it throws the code it reduces the RMPs, hence the wanting to die. Before I turbo'ed it, it ran great. No CELS.

ps. Throwing code 41 (Primary oxygen sensor heater) But i had that disabled before..

turbob16hatch · « **Reply #5 on:** September 02, 2009, 04:13:26 PM »

No cel before we put the turbo kit on, it was running a stock p28.

the rpm's are not limited but it would/is hard to rev it out as it is running so rich. around 10:1 afr's on the wide band.

ratcityrex · « **Reply #6 on:** September 02, 2009, 04:14:59 PM »

At 10:1 you should still be able to get it to reline, So Im probably pretty sure that its in limp mode. Was the ecu chipped before you put the turbo in?

DelSlow · « **Reply #7 on:** September 02, 2009, 04:22:03 PM »

No, i chipped it when we were installing the kit. All the connections from the chipping are good and like i said, it ran really really well right off the bat, no codes hiccups at all. Then just cruising down the interstate, threw a CEL and feels like its getting loaded down pretty bad.

Any suggestions from what you see to maybe fix this problem?

turbob16hatch · « **Reply #8 on:** September 02, 2009, 04:24:07 PM »

Quote from: ratcityrex on September 02, 2009, 04:14:59 PM

At 10:1 you should still be able to get it to reline, So Im probably pretty sure that its in limp mode. Was the ecu chipped before you put the turbo in?

No you could get it to red line if i wanted to rev the shit out of it, but i saw no point going over 5k while free revving.

Have you also heard of issues caused by the ect circuit? i know fuel compensation changes based on the ect readings. but i don't know what to look for to see if something is not right.

ratcityrex · « **Reply #9 on:** September 02, 2009, 05:03:20 PM »

Pull your ecu out. Check the back of it to see if any solder has come loose and is touching two pins together. (has happened to me before)Then clean the whole board. I understand that it was great then all of a sudden it went to shit. Im just trying to help you narrow it down. So were you yousing a rtp to tune or the good old burn, read, write, burn. Have you tried a differant tune to see if it dose the same thing?

turbob16hatch · « **Reply #10 on:** September 02, 2009, 05:11:29 PM »

Quote from: ratcityrex on September 02, 2009, 05:03:20 PM

Pull your ecu out. Check the back of it to see if any solder has come loose and is touching two pins together. (has happened to me before)Then clean the whole board. I understand that it was great then all of a sudden it went to shit. Im just trying to help you narrow it down. So were you yousing a rtp to tune or the good old burn, read, write, burn. Have you tried a differant tune to see if it dose the same thing?

Yup the read burn, shit.

We tried a map we found online also that was someone's tune with a similar setup. and same thing. also we tried hooking up the stock o2 sensor in the map, and it idles a bit better then the same shit happened.

So i think he is going to heck the ecu then we will see.

ratcityrex · « **Reply #11 on:** September 02, 2009, 05:26:52 PM »

Try a differant ecu and go from there.

DelSlow · « **Reply #12 on:** September 02, 2009, 05:34:45 PM »

ECU board look perfectly fine.

ratcityrex · « **Reply #13 on:** September 02, 2009, 05:55:48 PM »

Try a new chip and try and reburn the map on it, or a new chip with a differant map again.

DelSlow · « **Reply #14 on:** September 02, 2009, 06:13:02 PM »

Did that already, have 4 chips, rebunred them a couple times on each.

ratcityrex · « **Reply #15 on:** September 02, 2009, 06:18:31 PM »

What about a differant ecu?

DelSlow · « **Reply #16 on:** September 02, 2009, 07:52:29 PM »

haven't tried a different ECU yet.

Conceptz-X · « **Reply #17 on:** September 02, 2009, 07:56:53 PM »

Quote from: DelSlow on September 02, 2009, 03:29:57 PM

Now it idles a little rough, then when it warms up a bit it throws a code (which when jumping, ELD enabled/and disabled, wont read the code) and bogs pretty bad/runs really rich, and needs to be help at 2500/3000rpms + to stay running.

Have you checked your coolant temp voltage?

DelSlow · « **Reply #18 on:** September 02, 2009, 08:26:39 PM »

btw when i chipped my ECU i did NOT cut this resistor...should i have?

glustic · « **Reply #19 on:** September 02, 2009, 09:58:22 PM »

Removing j12 is for full duplex mode.... Since your using crome I would remove it... Also make sure the connections are solid... a tiny connection can fuck shit up

DelSlow · « **Reply #20 on:** September 04, 2009, 03:25:52 AM »

Tried it with a different ECU and it ran perfect...so must be my shit ECU. Thanks for the help anyways guys, ill post up if that was the problem for sure.

Keep ya posted.

Tim · « **Reply #21 on:** September 04, 2009, 08:16:26 AM »

Reflow all of your solder joints and clean it up. Look at both sides especially the ground pins- they can dissipate a lot of heat and leave a shit solder joint.

If it worked great for a while it should be an easy fix

DelSlow · « **Reply #22 on:** September 04, 2009, 01:10:08 PM »

Redid the ECU chipping and its running like she did before, great.

Thanks for all the help nonetheless.

Conceptz-X · « **Reply #23 on:** September 04, 2009, 07:06:33 PM »

Post porn...

darkelvis · « **Reply #24 on:** September 04, 2009, 10:31:10 PM »

and pictures of the setup...

turbob16hatch · « **Reply #25 on:** September 04, 2009, 10:43:37 PM »

yeah will is slow and i never took any.

ratcityrex · « **Reply #26 on:** September 04, 2009, 11:47:58 PM »

Your welcome...

DelSlow · « **Reply #27 on:** September 06, 2009, 04:47:15 AM »

OK, what the fuck...started doing it again, even after a solid night of just driving it.

I'm thinking either:
A) the ECU is just bad, even after having the soldering redone by a professional.

or

B) I have a bad MAP?

I did a little research and saw a thread where a kid had a similar problem, from how he described it, and it ended up being his TPS, any thoughts on that being the problem? (or experiences?, sexually)

Any input would be fantastic.

Joseph Davis · « **Reply #28 on:** September 06, 2009, 12:53:16 PM »

Conceptz-X · « **Reply #29 on:** September 07, 2009, 02:03:23 PM »

Quote from: Conceptz-X on September 04, 2009, 07:06:33 PM

Post porn...

Quote from: darkelvis on September 04, 2009, 10:31:10 PM

and pictures of the setup...

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Author Topic: Help!!!! Car loads up when warm (Read 9431 times)