Posted: 1/9/2008 10:28:21 AM EDT
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Vehicle: 1999 Chevy Tahoe 5.7L V-8 Vortec 4x4 Problems: On very cold mornings (<40), the engine exhibits two problems: Runs rough with sluggish acceleration like it has a misfire. Power steering won't turn right. Left is fine, but when trying to turn right, the wheel won't turn as if I have no power steering at all. If I slow down to less than 10 MPH, steering is completely normal. Both problems disappear completely when engine temperature comes off the low peg on the gage. The only two things that I can think of that might be affecting this are I have a K&N filter which might have gotten the MAF sensor oily, and I had a pretty serious front end collision a while back which may have damaged the steering. However, I have doubts about these since the problems only appear when the engine is very cold. 
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I haven't done that yet, but might try that at some point. I almost hope to see something rubbing, since the absence of an obvious visual problem means nothing. |
Do you have any idea how thick the fluids are at that temp. You should let the thing warm up before you drive it. Take both types of fluid and put them outside in a bowl and see how thick they are after sitting all night. Use a block heater to help decrease the warm up time. |
Maybe, but I figured if that was the case it would affect both sides evenly. |
Didn't do it last year at this time. Everything was just as cold, and no other vehicle I've ever driven did that. |
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The spool valve in the steering box is patially plugged, causing the lack of flow in one direction when cold. You could try flushing you steering system but more than likely you'll need to replace or have the steering box rebuilt. On running rough cold, how long does it take to get to temperature?, Could be t'stat, ECT or injecters, you need to find a mechanic with a Tech 2 to get it checked out. |
SHit. Thats the expensive part. |
Sounds like NASCAR. |
