QuestionQUESTION: hello, my 99 volvo s80 t6 (low coolant turn car off asap)message never goes off. can drive car 500 miles and it stays on. never needs antifreeze or overheats. also red triangle & check eng light stays on indefinitely. car is hard to start when hot or cold ( harder when cold). when on runs nice. please help
ANSWER: Mark, check the coolant level sensor and it's connection in the reservoir. It's a simple on/off switch.
Mark
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QUESTION: this worked great for all low coolant level messages, also red triangle is now orange. service light-stc light-check eng lights on. car is still hard to start especially when sitting overnight . even when warm when i restart the idle jumps up and down a few seconds before leveling off to smooth idle. also if i kick it down while driving it always nose dives at 4000 rpm. but other than tat it runs nice.
ANSWER: Mark, now haqve it scanned.
Mark
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QUESTION: thanks so much for help, i had scanned and it came up with these codes po238 po236 po118 po453 po103 po134 po154 po113. if you can suggest anything i'd love to know........mark
Answer Mark, wow! You've got lots of problems. Has this vehicle been modified or remapped in any way? 134 and 154 are bank one, O2 sensor one and bank two O2 sensor two respectively, have insufficient or no activity. They are either dead or unplugged. Your car is not going into closed loop. First thing I'd address. Second, 118 CTS (coolant temperature sensor) circuit high. Again, dead or disconnected.113 Intake air temperature high. Bad or disconnected. 103 Mass air flow sensor signal high. Same. 238 Boost signal high. 236 Boost signal out of range. Same, or tampered with waste gate. 453 Evaporitive system presssure signal high. Same.
Did this car have an underhood fire? Does the wiring harness look original? Is it in good shape? Is it all patched up with black electrical tape. Is it even connected everywhere?
Mark
