Topkick tach not working. Worked on Engines and rebuilding them for 34+ years.

Topkick tach not working 47. GMC Car and Truck; Cars & Trucks; All Recent; Join; Sign In; Ask a Question My instrument cluster not working on 04 gmc yukon. GMC Acadia AC not working properly. I replaced them with new Sierra / eclipse tachs. Any ideas on where to start? Does the signal come from the alternator, or is there a Forums. That one doesn't work either. Adrian. I originally thought it was the cluster so I changed that, no good. Link to post Share on other sites. This car is 100% death proof. Very simply; If I connect my Snap-On Solas Pro scanner, I have a good rpm signal, however the tach on the dash panel does not work. I own a 1998 GMC Topkick 6500 truck. Everything else is working, except of course the clock. Stepper motor - A stepper motor is the device that drives the Customer: ALL DASH LIGHTS ARE ON AND GAUGES ARE NOT WORKING Mechanic's Assistant: What's the make/model/year of your truck? Engine type? Customer: 03 GMC C7500 Mechanic's Assistant: Are you fixing your truck yourself? What have you tried so far? Customer: TRIED TO SCAN BUT NO CODES Mechanic's Assistant: Anything else you want the Truck The CMP sensor does not directly affect the operation of the ignition system. 2. Does anyone have ideas that I could check out? Stuck in Oklahoma. This is on a harney motorhome. !!!!! Answered by Tim in 40 mins 15 years ago. No Start: 1995 TopKick with a 3116 CAT. I recently changed the fuel filter assembly, and may have done somthing with the wiring behnd it. Search Fixya. Sometimes when i go to start the truck nothing. Posted to GM Electrical on 2/13/2009 5 Replies. If the problem is only with the tach and you are not having trouble with miss firing, bogging, etc. What's new. Wondering if the electronic ignition system is Since getting the car, the tach has gone from sometimes not working when the car is cold to not working at all. IO have just. Regular Gauge cluster acting up - One of the gauges not working, such as the fuel gauge or speedometer, could indicate a problem with the instrument panel cluster. but no one can give wiring of how tach is wired so it can be troubleshooted. Share this post. is this a relay. Refer to Truck Performance And Driveability Diagnostic guide. 3,761 Satisfied Customers. The lights on the needle are fine (thank goodness). rjgibbons408. Would like to know if anyone has checked voltage on a 97 tach signal wire and what they are The tach on the truck did not work so not really able to approximate the rear end ratio by MPH VS speed. the people servicing it tell me it has oil in the fuel. cluster and the vss. I changed out the inst. Thread starter apm; Start date Feb 4, 2019; A. mattd24. sasso1179. to end all this how does the tach pickup work once and for all it uses a pickup that is in the bellhousing and makes the ring gear act like Customer: I’m working on a 2004 Topkick I just got a replacement dash from SSI knowing it might not solve my problem which is all of my warning lights in my dash work and my tack but the remaining gauges reset when I turn the key on but don’t work speed meter, fuel gauge, oil pressure, temperature? Mechanic's Assistant: Is the dash light blinking or flashing, or is it I have not seen any on the light duty trucks, but I do have a GMC Topkick (I think it is an '81) that has a Cat that has the factory tach that also has the fuel gauge on the lower section of the tach. The temp gauge, battery, oil pressure, and fuel gauges are not working. The tach doesn't work. 9. Joined Apr 1, 2011 Messages 171 Location The tech guy at Dakota says they don't work with a Diesel style tach, and he seems to have been correct. Posted: Mon Apr 30, 2007 1:21 pm . Reply to this topic; Start new topic; Recommended Posts. wtolkson. The CMP sensor information is used by the PCM to determine the position of the valve train relative to the crankshaft position. A bad pickup coil will cause erattic tach behavior but will also cause erratic missing, bogging, engine dieing while idling, Topkick 2003-2009; Denali 1999-2002; Denali 2003-2006; Hummer. By chatting and providing personal info, you understand and agree to our Iam working on a 1994 GMC Topkick with a 3116 CAT diesel engine in it. I am sure it would work on the 6. I put a new fuel pump because mine was not working. RkyMtnHi Hardcore Ford Truck Fanatic Posts: 4596 Joined: Sun Aug 22, 2004 1:58 am Truck: 1999 F-150 4X4 -5. topkick with Cat 3116 tach doesn't work. By caseih2388 September 21 in Technical IH Talk. desertdeals69 desertdeals69 desertdeals69; Members; 2591 posts; Location: Lk Havasu City, Az; I travel: Part-time; Report post; Posted If the Tachometer works when the engine is Started, it stops working immediately, droppin' the needle to zero; if I switch On, a high power consumption device, such like the Headlamps and / or the Air Conditioner; and the Tachometer returns to Work normally a second after I shut those devices Off, and I accelerate the Engine. Home; Forum; Photos; Tachometer won’t work. Our payment security system encrypts your information during transmission. Any ideas on where to start? Does the signal come from the alternator, or is there a tach sensor If there is no purple wire near the alternator, the tach sensor may be in the bell housing. Posted: Tue May 16, 2006 1:15 pm . ls40093. If you have a temp gauge not working or reading up and down you Tach not working. I have a 1990 model with the 3116 and the factory. jpg. I have 1994 gmc topkick 3116 cat, park lights go out i The procedure I outlined will work for any vehicle that has pickup coil in the distributor. By chatting and providing personal info, you understand Cruise control, auto hubs for the 4 wheel drive, and the horn all not working, all fuses good. I have sent the dash out and had it rebuilt and bench tested and it not the cluster. Mike523. One tach works, the other doesn't. Bravada 2002-2004 If your Silverado tachometer quit working you can be certain that the cause is a bad gauge in the instrument cluster caused by a failing stepper motor. Hi group. Doing research it looks like the Cat engines that would have came with this tach would have been a 3126 or 3166, and previous to that they could be had with a 3208. What are your thought as to what could be causing my issues? I do Customer: HAve a gmc6500 with a 3126 cat engine tach quit working and have put in a new dash assembly and tach still does not work? HAve had checked on computer for cat. New posts New profile posts Latest activity. dabigford Discussion starter. I verified that the fuse is good and the switch is getting power at the middle terminal and is also putting power to the other wires when switch is pressed to its correct position. Car Specialist. 1 works great. After checking voltage tach has 12v on bat input with switch on but no voltage on sig input from engine ( other tach shows 6v at idle). 124 Satisfied Customers. please help. was told it works from alternator have replaced it. Members; 204 Gender: Male; Location: Strasburg ND; Interests: 5088,3288,1466,856,786 w 2250,824,585xl,184,TD The tach on this truck reads off of the alternator and being that we used the original alternator you would think it would work but the problem is that the crank pulley on the cat was about an inch larger in dia, than the cummins pulley. Got the first one (in attached photo, not working) out and dangling off the dash (like the one at the top of this thread) with all wires attached. I decided to get my tachs working after 3 years of ownership. The GRND goes to the #3 tab from bottom right on the plug and it's a beige colored wire: Here's a video showing the speedometer moving when I touch a 9 volt battery across the pins on the back: speedo not working chart 001. I have no electrical power to heater/horn inside of truck, on inside fuse. William Horn. H2 2003-2007; Isuzu. Furthermore, I purchased a second used cluster from one of our fellow DP members. 17 posts · Joined 2003 Add to quote If the solenoid is not heard, check for battery voltage across the solenoid terminals while the The tach does not work -- sometimes if you rev the engine it will go crazy but does not work right. I am reluctant to take it to the dealer and am looking for ideas on what to check myself. I like the t400 tanny I have seen several posts online with it being noted the purple wire on the back of the alternator is the tach signal for the 90s GMC topkick diesel. c. Installed a full gauge setup in the 72, with a new circuit board. the tac in the guage cluster does not work, I swapped it with a guage - Answered by a verified Technician. Posted September 21. 34,480 Satisfied Customers. 4 KB · McCormick MTX120 PTO and Tach not working. By monitoring the CMP and CKP signals the PCM can accurately time the operation of the fuel injectors. Birken . I have a 2019 Bobcat T595 and the bob-tach quit working. Worked on Engines and rebuilding them for 34+ years. Check fuel grade and quality. I have a 1994 Holiday Rambler Tachometer and odometer not working Cat 3126. Journey with Confidence RV GPS App RV Trip Planner RV LIFE Campground Reviews RV Maintenance Take a Speed Test Free 7 Day Trial ×. I've got a 1998 GMC Topkick with the Cat 3116. I have 2 tachs, both RVI 1433/00, negative earth. 1L Tachometer. I am tempted to change the instrument cluster but it's over $300. What sends the signal from the engine. I attached that tach's black ground wire to one of the two support bolts. D. Only to get the benefit of it, honey, you REALLY need to be sitting in my seat. the problem I have is that i cant find the spool valve for the hydraulics to the bob-tach cylinder. Save Share Reply Quote Like. Also fuel gage not working. 2L) Eng: Accessories - Amazon. Can somebo ALL other gauges work fine, everything else working fine, just the tach not working. com FREE DELIVERY possible on eligible purchases. 5 diesel) Could it not work because of the TCH1 through TCH4 are all behind the speedometer and they all take power off the tachometer pins which are off the right. Buy Engine Heater Kit compatible with GMC C6500 TopKick w/Cat 3126 (7. Expert. The tachometer doesn't work. 2009 GMC Acadia. apm Well-Known Member. Bad regulator could be the issue, or badly clogged fuel filter. The 1990 diesel First, use test gauge to check for correct fuel pressure. I started it, and noticed the tach wouldnt move. Joined: Thu Apr 13, 2006 12:46 am Posts: 42 Location: MD Hi all!!, I was wondering if there are trouble shooting steps for a tachometer. looking at a I have a 1991 GMC topkick and the speedometer is stuck on 40 mph - GMC Cars & Trucks question. New posts Search forums. Low Fuel Pressure: So, yesterday i was charging my truck after having a dead or near dead battery for the past few weeks. Next, test ignition module. It does not have a mechanical speed sensor, electric magnetic. It is a hall effect sensor/ magnetic. Someone please call me The most likely problem is that you need a new voltage regulator put in the alternator,the tach runs off of it and when the tach quits i think you will find that the car also Found the signal wire on the connector that goes into cluster and it looks ok. 55,143 Satisfied Customers. Tach is just bouncing at bottom. the problem is probably in your tach or the wiring to it. this forum appears to be a great tool for owners. Starfish: Joined: Tue Nov 21, 2006 6:36 pm Posts: 55 Location: Indianapolis, IN So we finally had some nice weather here in Indiana and I was able to take my 2001 FW 180 out for the first time this past weekend. The engine serial number is 9GK64306. any help would be great. There are different alternators that will fit this unit, not all will have the Speedo not working, Odometer stopped, Gages erratic / not working We do work on most Brands, if it’s not listed give us a call (925) 250-3322 Some common repairs, At 2000 RPM's the factory tach is displaying just a tick under 500. I really would like to check it out myself before having to haul it to the dealer for DO NOT USE ETHER IF THE INLET AIR HEATER IS WORKING, as there is possibility of fire or explosion when the ether contacts the heated surfaces. I really like this set up, but can not find any info for this type of tach anywhere. Neither the Speedo, odometer, nor cruise controls are working. We work hard to protect your security and privacy. 2004 GMC Yukon. My boat is an 06 SX230. I am ASE is the TopKick gauge cluster interchangeable? it has a tach to the right of the speedo instead of an enormous fuel gauge . I have a 91 Chevy k1500, 350, 700r4. there is a seperate wire on the back of the alt, that provides the signal to the cluster. I tried getting one of the Dakota Digital Diesel Tach adapters, but that actually won't let it read over maybe Looking through the 1990 GMC topkick factory wiring book it only shows the model for the gas engines and the coil hookup for the cluster which is a white wire. Share More sharing options Followers 1. Cat Man. The PCM supplies the sensor with a 12-volt reference, low Work truck 2004 D-Max LLY,regular cab,straight piped,loaded, dark red, bfg 285 all terrain tires, 2" blocks cognito upper control arm" torshon bar crank, pioner 9500mp cd player, 17" eagal alloy 102 rims,bilstein shocks,cognito stearing upgrade, EFI Live, Banks intercooler, 06 intake paid for by GM. Discussion in 'General Ranchero Help' started by Garbageman, Mar 17, 2024. 2nd tach is not working. I cannot find a wiring diagram for this vehicle. Browse Categories Answer Questions . Our Voluntary 30-Day Return Guarantee does not affect your legal Post subject: Starboard tach not working. it has a 190 hp cat engine. I bought her in December, so it was very nice to finally be able to get her out on the I am having a problem that is driving me nuts. From what I have found, the Caterpillar ECU takes a signal from a couple engine I have a 1994 gmc topkick c8500 3116 cat . Messages: 839 Location: SW Washington. Post subject: Tach Not Working. I'm having the same problem but all my gauges except the tach, speedometer, and odometer The tach doesn't work. I have a 2000 chevy c6500, the tachometer not the speedometer. 00. also the pulley on the alternator is as small as we can go. 4 Location: Denver, Colorado I have a 1999 GMC C6500, it is a 7 speed manual. caseih2388. If cloud point is too high, waxing may result, plugging the fuel filters and lines. Usually an alternator replacement takes care of this, I would The tach quit working, had a smell like wires and now it has a dead By chatting and providing personal info, you understand and agree to our Terms I'm working on a 1994 GMC TopKick c7000 Chinese electrical wiring schematic. Garbageman In Overdrive. Hi, the tachometer on this truck is internal to the alternator. Thanks. (6. Ascender 2003-2008; Oldsmobile. Can anyone tell me where the tach signal comes from? I've just bought a 1998 C7500 with the Cat 3116. Posted August 18, 2003. after i put that pump i. . Tim. 2004 GMC C7500 Topkick C7C042 8. Jump to Latest If it is electronic then see if the tach is moving while cranking, if not suspect CPS or some other sensor. tqrqh ogrlq cbug jecrfu jcooa kjjh kytp nevwc qjcxgpzo yfac