Tachometer going out.

Buickguy123

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A FSM is a more useful than hoping it's done right on YouTube LOL.
A FSM? Full Service Mechanic? Could be a liar and a thief a screwball. Sadly, that is my experience with too many FSM and car shops. This is why AutoZone, NAPA, Oreilly, Rock Auto and Amazon are working at full vigor! Ask me about my $511 fuel filter and car shops. Dealer too! Cheers!
 

Buickguy123

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I initially rented a puller from AutoZone when I did my first one about 15 or so years ago. You will need to purchase the proper screws to fit the pulley as that particular size was NOT in the kit. It's not an easy job.
Edit: if your wiggled wires and it started I would look into your wiring integrity before changing the sensor itself. You may have chafed insulation or flaky connections. It's not an easy replacement like a MAF sensor, cam sensor etc. etc.
I also checked for any codes again using the AB paper clip method and the silly car threw no codes. None! Just 12 12 12. Weeks ago it was throwing 3 to 4. I did change 1 oxygen sensor. I dunno?
 

Mad_Coachman

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A FSM? Full Service Mechanic? Could be a liar and a thief a screwball. Sadly, that is my experience with too many FSM and car shops. This is why AutoZone, NAPA, Oreilly, Rock Auto and Amazon are working at full vigor! Ask me about my $511 fuel filter and car shops. Dealer too! Cheers!
FSM Field Service Manual or Full Service Manual.
 

2007LucerneCXL

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2007 Lucerne CXL. and 1995 Lesabre currently, past 1973 Riviera, 1968 Riviera
It's a GM service manual, something that is used to do repairs which may be a new concept on how things work. LMAO
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BuickGirlFromMars

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Yes the crank balancer has a proper procedure to remove and install.
to install DO NOT USE AN IMPACT.
You are supposed to use a flywheel holder and a installation toool. But, I just used a breaker bar and the old nut and carefully aligned with the key. It luckily worked out for me but you can ruin the crankshaft or threads or break something if you run it down like that.
the bolt is one time use. So it’s why I used the old bolt to pull the balancer on. If you had the same year I’d sell ya my bolt if you really wanted to reuse yours.
Anyway, I really recommend doing it he proper way. But you did check your wiring first?
 

BuickGirlFromMars

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Today and twice in the last few weeks the car would not start. The first two times I jumped the battery with car two and both times it started up. Today, I wiggled the harness wires to the CPS and jumped back into the vehicle and is started right up. Teach still acting odd so I am sure the CPS is an issue. Will replace both the harmonic balancer and the CPS. 93 PA SC ultra do I need a puller? Thanks!
I didn’t seen this. If you are needing jump starts, I’m thinking you may be running into a ground issue. Check your grounds. I’m not sure where they are in a 93 but one should be under the coil packs
 

Buickguy123

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I didn’t seen this. If you are needing jump starts, I’m thinking you may be running into a ground issue. Check your grounds. I’m not sure where they are in a 93 but one should be under the coil packs
Twice it would not start and it fired right up with battery cables but the tachometer was fine. The third time it would not start was when the Tach was acting weird and I reached down and wiggled the wires and connected and it started right up. The battery is good and alternator tested good. Everything I read points towards a bad crankcase sensor. Oddly, weeks ago the car was throwing 4 codes. I changed the upstream oxygen sensor. Two days ago in spite of this TACH acting weird I used the paper clip method to read the codes and no codes showed up. Odd because the AC refrigerant is low and normally throws a code 62 for that...its an old car now with a clean interior and pretty good exterior. That comes from washing and waxing over the years. It has other little issues but I just want to make sure I do not get stranded. A new crankcase position sensor and maybe harmonic balancer since I will be down there and a check of the wiring harness seems to be the issues? Thanks!
 

Buickguy123

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I didn’t seen this. If you are needing jump starts, I’m thinking you may be running into a ground issue. Check your grounds. I’m not sure where they are in a 93 but one should be under the coil pack
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Buickguy123

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Ok take the coil packs and look for what? Bad wire? I have been wondering where that wire out of the CPS runs?
 

Buickguy123

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I was thinking later this is what you meant to say by FSM. I have a Haynes manual but it is not very specific on many things. Is Chilton better or a FSM comes from another company?
 

Buickguy123

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Yes the crank balancer has a proper procedure to remove and install.
to install DO NOT USE AN IMPACT.
You are supposed to use a flywheel holder and a installation toool. But, I just used a breaker bar and the old nut and carefully aligned with the key. It luckily worked out for me but you can ruin the crankshaft or threads or break something if you run it down like that.
the bolt is one time use. So it’s why I used the old bolt to pull the balancer on. If you had the same year I’d sell ya my bolt if you really wanted to reuse yours.
Anyway, I really recommend doing it he proper way. But you did check your wiring first?
Are you talking about removal or reinstall? Many folks try to use an impact wrench then end up putting a breaker bar against the frame with a jack stand holding the bar or similar then they use the starter to crank the bolt loose. This one guy was smart enough to disconnect the coil pack to prevent an actual start. Now you suggest buying a new bolt? Many just use the old one and screw it on and do not use a torque wrench. Some use locktite on the threads. Will the harmonic balancer move as you try to tighten it on? Others have put grease on parts of a new harmonic balancer. Then there is the lining up of the balancer through the sensor? Best video is a fellow with a 91 Bonneville I think it is...
 

BuickGirlFromMars

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Are you talking about removal or reinstall? Many folks try to use an impact wrench then end up putting a breaker bar against the frame with a jack stand holding the bar or similar then they use the starter to crank the bolt loose. This one guy was smart enough to disconnect the coil pack to prevent an actual start. Now you suggest buying a new bolt? Many just use the old one and screw it on and do not use a torque wrench. Some use locktite on the threads. Will the harmonic balancer move as you try to tighten it on? Others have put grease on parts of a new harmonic balancer. Then there is the lining up of the balancer through the sensor? Best video is a fellow with a 91 Bonneville I think it is...
the balancer will most likely try and move. mine didnt i was able to get my torque + angle but often you need to hold the engine. a flywheel holder is the proper way.. i wont even list the improper ways. But you DONT want to impact it ON . Off is not preferanble but its better. YOu need a new bolt, it is compromised physically when you install it and its meant to be replaced like headbolts. if it comes loose on you... not a good time. vb
 

Mad_Coachman

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Are you talking about removal or reinstall? Many folks try to use an impact wrench then end up putting a breaker bar against the frame with a jack stand holding the bar or similar then they use the starter to crank the bolt loose. This one guy was smart enough to disconnect the coil pack to prevent an actual start. Now you suggest buying a new bolt? Many just use the old one and screw it on and do not use a torque wrench. Some use locktite on the threads. Will the harmonic balancer move as you try to tighten it on? Others have put grease on parts of a new harmonic balancer. Then there is the lining up of the balancer through the sensor? Best video is a fellow with a 91 Bonneville I think it is...
As BGFM said you have to secure the flywheel. I never had a problem re-using the same crankshaft pulley bolt.
 
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Buickguy123

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I didn’t seen this. If you are needing jump starts, I’m thinking you may be running into a ground issue. Check your grounds. I’m not sure where they are in a 93 but one should be under the coil packs
Today I took the SC and AC belt off and was able to disconnect harness into the CPS. Sprayed WD 40 Specialist contact cleaner into both ends and cleaned with a toothbrush. Disconnected several other connectors and did the same. I had the battery disconnected of course. Upon reconnecting battery cable and start up the Tachometer came on normal. But the good old SES light came on again. Today code 56. Yesterday 56 and 58. Disconnected battery cable reconnected 2 hours later. Car run well no SES light and Tachometer ran normal as we drove around town. Something is throwing code 56 from time to time Quad driver?? 4 possible issues? But the old beast is running pretty good for an old beast. Who knows? I think the wire to CPS was just dirty.
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Buickguy123

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BuickGirlFromMars

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Today I took the SC and AC belt off and was able to disconnect harness into the CPS. Sprayed WD 40 Specialist contact cleaner into both ends and cleaned with a toothbrush. Disconnected several other connectors and did the same. I had the battery disconnected of course. Upon reconnecting battery cable and start up the Tachometer came on normal. But the good old SES light came on again. Today code 56. Yesterday 56 and 58. Disconnected battery cable reconnected 2 hours later. Car run well no SES light and Tachometer ran normal as we drove around town. Something is throwing code 56 from time to time Quad driver?? 4 possible issues? But the old beast is running pretty good for an old beast. Who knows? I think the wire to CPS was just dirty.
Good on using the right wd40 now lol
 

Buickguy123

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Going to work this morning 60 mph on the freeway I noticed the tachometer not working. Car run ok. Just now car started up fine and teach was off for 5 miles then came on but dropped to 0 for a split second before shooting back to 1600 RPMS. 60 MPH cruise control on. Did this about 5 times. Car ran fine. No SES. I keep reading that perhaps the crankcase position sensor is potentially failing.?
Good grief! Friday afternoon stopped at a light that was stuck on red after driving the highway for 20 miles. The car got hot and stalled SES light came on. As fate would have it a tow truck was just to my right. He towed me to a shop I visited 2 years ago. So...I was gonna change the CPS myself but the ended up letting them do....another mistake...so all this money and the tach went out again briefly after getting the car back...they put a new harmonic balancer in as well as it was cracked plus the sensor...love how the paid $110 at Oreilly or lessfor the HB than charged me $169. Theft? Anyway, the car is starting and running rough...tach did come on again...and the coolant recovery tank was empty....heater core is leaking as the passenger front carpet is wet. Plus ATF hoses that run by the main coolant radiator to the ATF radiator cooler are leaking after I thought I fixed them? LOL Could be coolant too leaking out of a bad radiator cap. Cheapo Autozone cap. Stant better I think. Plus we think the SC pulley is the cause of the squeal. Supposedly the coupler was changed in December with the oil. But? I do not trust those clowns either now. But 28 year old car. 176000 miles. I wanna think it has more life after this money the last two years but no more shops! Sorry! Thieves. Overcharge you on parts. Fail to fix the problems. Fail to diagnose problems. I will play around with it but probably going on Craigslist to sell it? Somebody with the time might keep it going? Can't complain. Lasted 28 years. Cheers!
 
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