3200RPM, temp gauge flat lines & engine bogs out

**third_shift|studios** · 02-12-2006, 05:21 PM

at 3200RPM my temp gauge flat lines and the engine bogs out. WTF? My 2000 ws.6 M6 has been in hybernation for a few months now. zboner and i changed the oil and were bleeding the brakes on sunday. I let the car warm up to normal temp, then took it for a test drive. I went easy on it then finally took it past 2000rpm and when i hit 3200 the temp flat lined and the engine bogged like it lost fuel? it lurched hard forward then regained momemtum @ 4000....ok, go.

**SeVeReDiStOrTiOn** · 02-12-2006, 06:04 PM

Probably bad fuel from being stored....put some fuel system cleaner in there. Did you add stabilizer before being stored?

The temp gauge flat line is prob from the engine actually dying for a sec and the gauges lost power...just a guess though

**third_shift|studios** · 02-12-2006, 06:15 PM

temp gauge was the only one that moved though. everything else was online [fuel/battery] also the car was started and warmed up once a week since thanksgiving. no on the stabilizer...i guess some fuel cleaner/new gas wouldn't hurt.

**third_shift|studios** · 02-12-2006, 06:17 PM

also, wierd thing; while driving at one point, the temp gauge was flat lined, all of a sudden it jumped up to read standard temperature-i threw caution to the wind, put the car in neutral and reved the engine to 5K. it never bogged at 3200 again??

**third_shift|studios** · 02-12-2006, 06:18 PM

this is all in the course of about an hour

**D!ck** · 02-13-2006, 05:47 AM

Originally Posted by dipherentdesign

also, wierd thing; while driving at one point, the temp gauge was flat lined, all of a sudden it jumped up to read standard temperature-i threw caution to the wind, put the car in neutral and reved the engine to 5K. it never bogged at 3200 again??

some guy had a five hoe that would boggout like a mofo when drivin. but he would revv it it would sound mean. with out the engine havin any drag, even if its messed up it will sound alright. so dont judge by that.

**third_shift|studios** · 02-13-2006, 06:20 AM

good point, but once while it was neutral, standing still, temp @ flat line, it bogged down @ 3200. I'm really thinking this has something to do with the temp gauge

**BIG D's SS** · 02-13-2006, 06:28 AM

Man that has me stumped. Did it do it everytime or just that once?

**2001NBMZ28** · 02-13-2006, 06:35 AM

ECT sensor/connector/wiring? That's the only thing I can think of.

**third_shift|studios** · 02-13-2006, 06:36 AM

everytime. this is so weird...i took it to the local LS1 shop-i'm hoping they can finger point it really quickly. It might be a computer thing too

**D!ck** · 02-13-2006, 06:47 AM

mice are the biggest problem with stored cars!!!!!!!!!!!!!!!!!!!!

**Sarge** · 02-13-2006, 07:08 AM

T-Stat stuck...

**third_shift|studios** · 02-13-2006, 07:11 AM

intresting....might be good reason to get a 160° thremostat now

how can you tell? and why wouldnt' i get a code?

**Sarge** · 02-13-2006, 07:30 AM

Well....if a tstat is stuck closed then you get no coolant to the block...a big ol bubble goes past your temp sending unit (air lock) and your temp gauge flat lines.....ain't a computer thing...it is a mechanical thing....at idle and engine at op temps....feel the hose at the top going into the block prior to the tstat...if it is hard...the tstat is closed....if you cannot squeeze it.....it may be intermittent.....

**third_shift|studios** · 02-13-2006, 07:50 AM

dayum, sarge-that sold me. i'll have to talk to my tech about that.

**Zboner** · 02-13-2006, 02:39 PM

yes it was very strange

**third_shift|studios** · 02-14-2006, 05:35 AM

got word back from the techs: they said it was a bad connector from the temp gauge to the engine.

also said i was low on coolant

sweet, hope it's nothing more. still I should get that 160 t-stat though. I'm sure i can bolt that up though.

**Zboner** · 02-14-2006, 05:37 AM

well thats good news

**Zboner** · 02-14-2006, 05:38 AM

cool

**BIG D's SS** · 02-14-2006, 05:46 AM

Originally Posted by dipherentdesign

got word back from the techs: they said it was a bad connector from the temp gauge to the engine.

also said i was low on coolant

sweet, hope it's nothing more. still I should get that 160 t-stat though. I'm sure i can bolt that up though.

Just remove both of your belts and takes about 10 minutes total to install. The reason for the belt removal is to keep antifreeze off the belts. If not they will squeel like a girl.