car stalls in reverse in cold weather(sometimes)

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01-18-2006, 02:19 PM

DcMaN

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car stalls in reverse in cold weather(sometimes)

Recently in the cold my car likes to stall in reverse. As soon as i shift into R (auto Transmission) it completely shuts off the dummy lights come on. Then i have to put it into park and start it again and it works fine. Any ideas what could be causing this im pretty sure that the tranny is perfect. I have a stage 2 Valvebody from jeff at maximum tuning. I also have a geforce ecu. The shifts are perfect and show no signs of sliping. I have the egr code 0302. Im not sure if this would cause the problem im having.

01-18-2006, 02:39 PM

njmodi

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Dirty IACV or sticking IACV solenoids most likely... shifting into R puts an extra load on the tranny - the IACV should compensate for that, but it isn't able to.

01-18-2006, 02:46 PM

DcMaN

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it shifts it pretty hard into R too ive noticed. So just replace teh whole iacv ? Ive cleaned it before but its got 170k on it.

01-18-2006, 02:47 PM

njmodi

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No CEL codes right? Sounds like a bad drop resistor...(the hard shfiting)

01-18-2006, 03:09 PM

DcMaN

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nope no CELS except 0302 the egr valve. Are bad drop resistors found often in our cars ? THats the thing found on the driver side strut tower right.

01-18-2006, 05:33 PM

njmodi

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Quote:

Originally Posted by DcMaN

nope no CELS except 0302 the egr valve. Are bad drop resistors found often in our cars ? THats the thing found on the driver side strut tower right.

No - not what I would consider a common problem, and Yes on the location.

01-18-2006, 05:34 PM

njmodi

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Oh, I'm also not sure if a clogged EGR passage (which is why you have 0302 most likely) would cause an idling problem... it may...

I'll need to look into how/when the EGR valve is supposed to open up.

01-18-2006, 06:40 PM

DcMaN

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ive replaced the solenoid twice and still no luck so i guess i have no choice but to remove the intake manifold hehe. It is actually a weird proble, at stops sometimes the idle raises to about 900 and stays steady their untill i come to another complete stop. Sometimes it constantly stays on 900.

01-18-2006, 06:43 PM

njmodi

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Quote:

Originally Posted by DcMaN

The EGR problem is clogged passages...

The idle problem is sounding more and more like a sticking IACV/solenoids in the IACV. Just pull it all apart and clean it... (intake cleaner or whatever)

01-18-2006, 06:44 PM

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DcMaN

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what is their to remove on it besides the gold plate ?

01-18-2006, 06:54 PM

#11

njmodi

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You can remove each solenoid from the other side and clean out the plungers...

01-18-2006, 06:59 PM

#12

DcMaN

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oh reaalllly i did not know that sir. Is their a guide ?

01-18-2006, 07:03 PM

#13

njmodi

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Quote:

Originally Posted by DcMaN

oh reaalllly i did not know that sir. Is their a guide ?

Remove screws, clean out.

/End of Guide

Just kidding.. no guide that I know off, but I can take a peek tomorrow (I have a spare one in the garage that I'm too lazy to go get).

Just shoot me a PM to remind me.

01-18-2006, 07:27 PM

#14

DcMaN

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is their a screw like fitment on the plastic part of the iacv under neath that gold plate ?

01-18-2006, 07:30 PM

#15

njmodi

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Quote:

Originally Posted by DcMaN

is their a screw like fitment on the plastic part of the iacv under neath that gold plate ?

No - don't mess with anything on that side except removing that brass (or whatever) hat and cleaning all that out.

There are a few screws on the other side with all the connectors that you can pull and clean.