Northstar Engines and System Technical Discussion Discussion, Low speed stall in Cadillac Engine Technical Discussion; I really need some help. My 99 Seville SLS stalls at low speeds, I drive
58 miles to and from ...
I really need some help. My 99 Seville SLS stalls at low speeds, I drive
58 miles to and from work with no issues until I slow down for traffic jam or to get off at my exits. This only happens when I get to a very low speed and not always. I have had the TCC solenoid replaced because I was told that was it. It was OK through the winter, but now that its warming up a bit, it stalls regularly at low speeds. The only code I can get from the display is a 1599 code (stall condition)
Thanks Ranger, I tried both of those things. The throttle body was all gummed up and the EGR was clean. I have read many posts and thought about replacing the Crank Position Sensors even though I don't get any related codes. Do you think that might be it?
I haven't replaced the CKP sensors yet but I did remove the IAC valve to look at it and it was full of carbon deposits. It idles smoother now and has not stalled until today. I got off at an exit going from 70 down to around 35 slowly. I noticed at one point while slowing down the tach suddenly dropped until I gave it gas and it recovered before stalling. Could this be related to the speed sensor on top of the tranny? Ranger or Sub are you out there?
i think ranger is right....i had the same thing happen on my 2000 dts. i would pull up to a light and it would stall, took it in and it was the crank sensor. they replaced it and it worked great after that.