Author Topic: FIXED! : No response from CEL  (Read 3543 times)

jdirty

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FIXED! : No response from CEL
« on: June 27, 2013, 12:32:11 PM »
I've searched around and nobody seems to have the same problem here on m42club aside from this thread:

http://www.m42club.com/forum/index.php?topic=13248.msg119886#msg119886

Instead of bumping it with a question i'll just start a new thread.

Initially i was having issues with random hesitation.
I can't narrow it down to speed/rpm because it randomly occurs and i'm given a hard shudder/ jerk as if i was bouncing off the rev limiter. There are times that When i do hit this imaginary rev limiter my CEL intermittently blinks off then comes back on.

When approaching a stoplight or doing a full stop, my idle will go way below ~800 rpm to the point of stalling if i don't put my foot on the gas. So i always end up heel and toe-ing to the stop light. lol

Thinking this was caused by a faulty or dirty ICV, i disconnected the ICV which temporarily afixed my idle to the 1k rpm range but hesitation still occurs.

I've checked my spark plugs and they all seem to burn the same. They're Bosch.
3 years ago i had replaced my fuel pump, filter, fpr and cylinder head.
2 Months ago, i had replaced my spark plugs.
1 day ago, i had changed my oil due to a smashed oil pan.
And i've recently passed smog as well. Good thing the CEL didn't show up then.

I've tried doing the stomp test several times only for the CEL to just have a staring competition with me. I eventually lose and still don't know what's going on.

If i manually actuate the throttle body with the key in the stomp test position and still get no response from the CEL, would that be caused by a faulty TPS? 

I haven't done any multimeter tests yet nor cleaned my ICV.
Maybe later after work.
« Last Edit: July 01, 2013, 08:32:21 PM by jdirty »

jdirty

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Re: No response from CEL
« Reply #1 on: June 28, 2013, 02:57:49 AM »
I cleaned my ICV but I'm still getting idle issues and hesitation.
Tried the carb cleaner on hoses to check for leaks but no change in idle.
I did check the tps resistance and it was 400+/- and ithe value lessens when I move the throttle.
Tested with 2k ohm on the meter. That was the nearest to the values specified on the e36 manual.
From my understanding.. That's how to use a multimeter. Lol
I did check current and from what I read it had to me at least 5 dc on the tps harness with the key on ON positio  but I was getting 0.001 if I remember correctly. I forgot what dc setting was on my meter but that was the nearest range.
Either I did it wrong or my tps is bad.
Moving to camshaft position sensor.. I couldn't find values for it but it read 1500+/- ohms  while on the 2k ohm range. As for the crank position sensor I was getting 500+/- from what I read.. Isn't that where I'm supposed to be getting 1500+/- ohm from?!

jdirty

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Re: No response from CEL
« Reply #2 on: June 28, 2013, 11:48:12 PM »
I replaced my TPS and no more hesitation(this didn't fix anything= refer to the last post). Also adjusted my throttle cable tension but I still cannot pull a cel code. I've ordered a cop kit since my wires were long due any way and for the price of OEM wires vs a cop kit.. Why not. I do however still have an idle issue. The car stalled on me while decelerating to a stop light. Idk why.
« Last Edit: July 02, 2013, 12:38:12 PM by jdirty »

jdirty

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Re: No response from CEL
« Reply #3 on: July 01, 2013, 08:31:49 PM »
This issue has been resolved.
Being a multimeter noob, i should've trusted my gut and stuck with my TPS harness being messed up due to not having any DC.
The issue was that the CEL was on because the car thought it was always WOT.
I couldn't get the stomp test to work due to the two wires in the TPS harness being cut.
After wiring it back up.. CEL was gone, idling issue was gone as well as the hesitation. LOL
« Last Edit: July 02, 2013, 12:36:46 PM by jdirty »

deansweet

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Re: FIXED! : No response from CEL
« Reply #4 on: July 02, 2013, 05:49:21 AM »
thanks for the update.