My MALFUNCTION INDICATOR LAMP, has been coming on as of lately. I have already put in chevron techron concentrate plus, with 91 chevron gas(only gas I use). I have also made sure the gas cap is closed correctly. It has been doing it for at least a 2 weeks now. It will go away after 3 drives. But today I started my car and I suppose I went to much with the key; meaning cranking too much at the ignition. Once I did this the INDICATOR LAMP came on again. I don't know what could be the problem any info. would be helpful.
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Either buy an engine analyzer (around $40) or run to Autozone or the like for a free check. They will read the code(s) that cause the light to go on and be able to set you on the path to resolution. Please keep in mind the codes are just clues to the problem and not always the actual issue. An example would be a code for insufficient EGR valve lift. More often the valve is fine but the EGR port(s) in the intake manifold are clogging.
There are hundreds of threads the seafoam treatment -read up.
99 TL > braided steel brake lines- Power Slot rotors with OEM pads (great combo). k&n-ported airbox. Tokico blues and Conti Sport Contact DWS.
DTC P1676: FPTDR Signal Line Malfunction '99 model TL
Reset the PCM. Start the engine and wait 10 seconds. Is DTC P1676 indicated? YES -Go to step 3. NO -Intermittent failure system is OK at this time.
Check for poor connections or loose wires at the ABS/TCS control unit and the PCM.
Step 3-Turn the ignition switch OFF. Disconnect the PCM connector E (12P) and the ABS/TCS control unit 16P connector. Check for continuity between body gound and PCM connector terminal E1. Is there continuity? YES -Repair short in the wire between the ABS/TCS control unit and the PCM (E1).n NO -Go to step 6.
Check for continuity between ABS/TCS control unit 16P connector terminal No. 1 and PCM connector terminal E1. Reconnect the PCM connector E (12P). Connect PCM connector terminals E1 and C28 with a jumper wire. Reset the PCM.
Start the engine and wait 60 seconds. Is DTC P1678 indicated? YES -Substitute a known-good ABS/TCS control unit and recheck. If the symptom/indication goes away, replace the original ABS/TCS control unit.n NO -Substitute a known-good PCM and recheck. If the symptom/indication goes away, replace the original PCM.n Is there continuity? YES -Go to step 7. NO -Repair open in the wire between the ABS/TCS control unit and the PCM (E1).n
Basically, it's an ABS/TCS control unit failure......
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Well, I've viewed the forums here and some have installed a new ignition switch for the p1676 code. In addition, some have installed a new third pressure plate, for p1739 code, still can't find a part # for the third pressure plate or switch or solenoid? As for engine coolant temp. still not sure but pretty much the same, install new sensor yet to find a part # for that code p0118. Any help or advice would be highly appreciated.
Well, I spoke to my certified Acura mechanic and he said I would need a new ignition switch as well new engine coolant temp. sensor. As for the third pressure plate he said that would be a waste of money due too the high mileage of the vehicle. He basically said that I would need a new transmission in the near future.
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