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Hi gang,
I'm thinking that my FSD (remote mounted) may be dying. I've filled out the checklist. What do you guys think?
Thanks,
Rob
6.5 Engine Diagnostic Troubleshooting Checklist
Problem: Explain your problem in concise language (ie: Cranks but won’t fire). Stalls intermittently while running
Demographics: tell us about your truck and your ambient conditions: Mild Fall/Winter Weather. Pacific Northwest. Stock 99 Suburban as seen in sig, except for remote FSD.
- Year: 1999
- Truck model and class (ie: c2500) K2500
- Automatic or Standard: Automatic
- Mileage: (indicate miles or km) 120K miles
- Replaced parts and mods (IP, PMD, chip/PCM, TM, injectors etc) All stock except the relocated FSD. It has a Kennedy remote wiring harness with an SS Diesel heat sink mounted to the underside of the front bumper.
- Model: ‘S’ or ‘F’ engine, NA or Turbo, EGR? F engine Turbo
- Ambient outside temp: (indicate *C or *F) 40-50 degrees F
- What fuel are you using? (#1 Diesel, #2 Diesel, Bio, VO, WVO, etc) #2 diesel
- What fuel additives are you using? Gallon of B99 in each tank.
- Where are you located? Pacific NW USA
General maintenance: inspect and evaluate the condition of each. When were they last changed?
- Air filter Clean
- Fuel filter Clean. Changed 1000 miles ago
- CDR Valve? Clean, working.
- Coolant – last flushed/replaced at 2 years ago
- Oil – synthetic/regular, changed at: Change every 3000 miles, using Delo400LE 15/40 Diesel-rated with Fram HP4 filter.
- Batteries – state of charge, (matched set) replaced at: New batteries, replaced as a pair exactly 12 months ago.
- Battery cables and grounds (removed, cleaned and tightened): I cleaned and tightened these last year when changing out batteries. All grounds look good.
- Glow Plugs - how many miles on them? I think they are original to the vehicle. What type? Not sure...
- Injectors - last changed at: Never changed.
History: (Describe how the problem first appeared.)
- What were you doing when it happened? Just started, pulling out of the parking spot. Idling at the stoplight. Moving slowly on the parking lot.
- How was the truck running fine before this problem appeared? YES
- Has this problem ever happened before? NO
- Describe any related factors that might be part of the problem. I'm thinking it might be that the FSD is dying, or the connections are bad. I did take the connectors off, sprayed them with DeoxIt, and reconnected them a couple of times (on both ends). But it's still stalling. Therefore, I think it's the FSD itself.
- Have you checked for DTC (Diagnostic Trouble Codes)? (Y.N) NO And? ________
Diagnostics:
1] Starting:
1a] Does the engine start? YES
1b] Does the engine crank over? YES
1c] Are your batteries fully charged? YES
1d] Have you removed, cleaned, and tightened all battery connections? YES
1e] Does your Wait to Start light come on for a time? How long? WTS comes on normally. Starts normally.
1f] Does your glow plug light come on? N/A For how long? _________
1g] Do you see smoke from the exhaust while cranking? What color? Didn't check.
1h] Does the Service Engine Light Glow during Start/bulb check? YES
2] Fuel Issues (if not running):
2a] Can you hear your lift pump working? ____________
2b] Do you get a steady flow of fuel from the water drain (T-handle) ? _________
2c] Loosen the inlet line from the IP – is fuel coming out (Lift Pump on)? ___________
2d] Loosen an injector line and crank the engine - does fuel come out? _________
2e] Do you hear a vacuum (hiss) when you remove the fuel cap? ___________
3] PMD / IP Issues
3a] Location of PMD (on pump, on intake, remote mounted) Under the front bumper
3b] Condition of Extension harness (if used) Vendor or Homemade? Kennedy harness
3c] Condition of grounds / ground wires to IP / PMD. Check Harness. Ground looks good.
3d] PMD Make: Stanadyne
3e] PMD Age: 10 years old.
4] Stalling Issues
4a] Do you experience stalling only when hot? No, hot or cold.
4b] Does it stall under particular circumstances? (ie hit bump, or on accel) Usually when idling.
4c] Does pouring cool water over the IP seem to help with restarting? Didn't try that.
4d] Is stalling momentary (engine recovers)? YES. SOmetimes it stumbles, sometimes it dies.
4e] Does SES light come on when engine hiccups? NO
4f] Does cruise control quit working when engine hiccups? Don't know.
4g] Does re-starting seem to reset engine, restoring cruise and power? Yes.
4h] Changes to dash lights or instruments during stalling events? None.
5] Running Issues
5a] On cold start, does upper rad hose get hard before engine warms up? _______
5b] Any bubbles or oil film in coolant overflow tank? _______
5c] Any white slime on oil surfaces (dipstick, CDR, oil Fill cap)? __________
5d] Excessive white smoke from exhaust on cold start? _________
5e] Excessive black smoke from exhaust under hard acceleration? __________
6] Performance Issues
6a] Do you have gauges (boost, EGT) ? ___________
6b] Maximum boost under load? ____________
6c] Have you added a performance PCM (reflash) or Chip? ______________
6d] Have you changed exhaust / downpipe / crossover? ________________
6e] Wastegate – mechanical or vacuum (OEM)? ______________
7] Temperature-related Issues:
7a] Single or dual thermostats? ____________
7b] Have you replaced them lately? Manufacturer of replacements? _________
7c] Have you pulled and cleaned Radiator and coolers lately? ____________
7d] Have you replaced the fan clutch? Manufacturer of replacement? ________
7e] (winter) Have you tested your antifreeze? Good to what temp? __________
7f] (winter) Are you using a winter grille cover? ___________
List and describe any other factors which are not addressed in this checklist. We can’t see, hear, smell, or touch your truck, so the more descriptive information you can give, the more likely it is that somebody can assist you.
_________________________________
I'm thinking that my FSD (remote mounted) may be dying. I've filled out the checklist. What do you guys think?
Thanks,
Rob
6.5 Engine Diagnostic Troubleshooting Checklist
Problem: Explain your problem in concise language (ie: Cranks but won’t fire). Stalls intermittently while running
Demographics: tell us about your truck and your ambient conditions: Mild Fall/Winter Weather. Pacific Northwest. Stock 99 Suburban as seen in sig, except for remote FSD.
- Year: 1999
- Truck model and class (ie: c2500) K2500
- Automatic or Standard: Automatic
- Mileage: (indicate miles or km) 120K miles
- Replaced parts and mods (IP, PMD, chip/PCM, TM, injectors etc) All stock except the relocated FSD. It has a Kennedy remote wiring harness with an SS Diesel heat sink mounted to the underside of the front bumper.
- Model: ‘S’ or ‘F’ engine, NA or Turbo, EGR? F engine Turbo
- Ambient outside temp: (indicate *C or *F) 40-50 degrees F
- What fuel are you using? (#1 Diesel, #2 Diesel, Bio, VO, WVO, etc) #2 diesel
- What fuel additives are you using? Gallon of B99 in each tank.
- Where are you located? Pacific NW USA
General maintenance: inspect and evaluate the condition of each. When were they last changed?
- Air filter Clean
- Fuel filter Clean. Changed 1000 miles ago
- CDR Valve? Clean, working.
- Coolant – last flushed/replaced at 2 years ago
- Oil – synthetic/regular, changed at: Change every 3000 miles, using Delo400LE 15/40 Diesel-rated with Fram HP4 filter.
- Batteries – state of charge, (matched set) replaced at: New batteries, replaced as a pair exactly 12 months ago.
- Battery cables and grounds (removed, cleaned and tightened): I cleaned and tightened these last year when changing out batteries. All grounds look good.
- Glow Plugs - how many miles on them? I think they are original to the vehicle. What type? Not sure...
- Injectors - last changed at: Never changed.
History: (Describe how the problem first appeared.)
- What were you doing when it happened? Just started, pulling out of the parking spot. Idling at the stoplight. Moving slowly on the parking lot.
- How was the truck running fine before this problem appeared? YES
- Has this problem ever happened before? NO
- Describe any related factors that might be part of the problem. I'm thinking it might be that the FSD is dying, or the connections are bad. I did take the connectors off, sprayed them with DeoxIt, and reconnected them a couple of times (on both ends). But it's still stalling. Therefore, I think it's the FSD itself.
- Have you checked for DTC (Diagnostic Trouble Codes)? (Y.N) NO And? ________
Diagnostics:
1] Starting:
1a] Does the engine start? YES
1b] Does the engine crank over? YES
1c] Are your batteries fully charged? YES
1d] Have you removed, cleaned, and tightened all battery connections? YES
1e] Does your Wait to Start light come on for a time? How long? WTS comes on normally. Starts normally.
1f] Does your glow plug light come on? N/A For how long? _________
1g] Do you see smoke from the exhaust while cranking? What color? Didn't check.
1h] Does the Service Engine Light Glow during Start/bulb check? YES
2] Fuel Issues (if not running):
2a] Can you hear your lift pump working? ____________
2b] Do you get a steady flow of fuel from the water drain (T-handle) ? _________
2c] Loosen the inlet line from the IP – is fuel coming out (Lift Pump on)? ___________
2d] Loosen an injector line and crank the engine - does fuel come out? _________
2e] Do you hear a vacuum (hiss) when you remove the fuel cap? ___________
3] PMD / IP Issues
3a] Location of PMD (on pump, on intake, remote mounted) Under the front bumper
3b] Condition of Extension harness (if used) Vendor or Homemade? Kennedy harness
3c] Condition of grounds / ground wires to IP / PMD. Check Harness. Ground looks good.
3d] PMD Make: Stanadyne
3e] PMD Age: 10 years old.
4] Stalling Issues
4a] Do you experience stalling only when hot? No, hot or cold.
4b] Does it stall under particular circumstances? (ie hit bump, or on accel) Usually when idling.
4c] Does pouring cool water over the IP seem to help with restarting? Didn't try that.
4d] Is stalling momentary (engine recovers)? YES. SOmetimes it stumbles, sometimes it dies.
4e] Does SES light come on when engine hiccups? NO
4f] Does cruise control quit working when engine hiccups? Don't know.
4g] Does re-starting seem to reset engine, restoring cruise and power? Yes.
4h] Changes to dash lights or instruments during stalling events? None.
5] Running Issues
5a] On cold start, does upper rad hose get hard before engine warms up? _______
5b] Any bubbles or oil film in coolant overflow tank? _______
5c] Any white slime on oil surfaces (dipstick, CDR, oil Fill cap)? __________
5d] Excessive white smoke from exhaust on cold start? _________
5e] Excessive black smoke from exhaust under hard acceleration? __________
6] Performance Issues
6a] Do you have gauges (boost, EGT) ? ___________
6b] Maximum boost under load? ____________
6c] Have you added a performance PCM (reflash) or Chip? ______________
6d] Have you changed exhaust / downpipe / crossover? ________________
6e] Wastegate – mechanical or vacuum (OEM)? ______________
7] Temperature-related Issues:
7a] Single or dual thermostats? ____________
7b] Have you replaced them lately? Manufacturer of replacements? _________
7c] Have you pulled and cleaned Radiator and coolers lately? ____________
7d] Have you replaced the fan clutch? Manufacturer of replacement? ________
7e] (winter) Have you tested your antifreeze? Good to what temp? __________
7f] (winter) Are you using a winter grille cover? ___________
List and describe any other factors which are not addressed in this checklist. We can’t see, hear, smell, or touch your truck, so the more descriptive information you can give, the more likely it is that somebody can assist you.
_________________________________
