96 Won't start, I'm at a loss - UPDATE
#81
02-15-2019, 06:16 AM
Veteran Member
Leave the cats, for now at least. I wouldn’t be surprised if they were fine.
I would attack what the car is indicating as “needs help”, namely the air pump! I replaced mine at about the same mileage. Advance Auto had an aftermarket in stock, with an exchange for the old one, it was less than $100 and it wasn’t difficult to replace.
After you clear that code, run the car and see what happens. We can deal with the next issue as it comes up!
I would attack what the car is indicating as “needs help”, namely the air pump! I replaced mine at about the same mileage. Advance Auto had an aftermarket in stock, with an exchange for the old one, it was less than $100 and it wasn’t difficult to replace.
After you clear that code, run the car and see what happens. We can deal with the next issue as it comes up!
#82
02-15-2019, 10:05 AM
Leave the cats, for now at least. I wouldn’t be surprised if they were fine.
I would attack what the car is indicating as “needs help”, namely the air pump! I replaced mine at about the same mileage. Advance Auto had an aftermarket in stock, with an exchange for the old one, it was less than $100 and it wasn’t difficult to replace.
After you clear that code, run the car and see what happens. We can deal with the next issue as it comes up!
I would attack what the car is indicating as “needs help”, namely the air pump! I replaced mine at about the same mileage. Advance Auto had an aftermarket in stock, with an exchange for the old one, it was less than $100 and it wasn’t difficult to replace.
After you clear that code, run the car and see what happens. We can deal with the next issue as it comes up!
#83
02-16-2019, 10:20 AM
Veteran Member
#84
02-18-2019, 12:45 AM
Well I did find that the F7 fuse for the smog air pump (offside front engine bay fuse box) was blown, and have replaced it with a new 25 amp fuse.
I can't run the engine up now as I am doing maintenance.
I did read that the '95 MY x300 has superseded/up-rated fuses for '96 and will check if the smog pump is one.
regards
I can't run the engine up now as I am doing maintenance.
I did read that the '95 MY x300 has superseded/up-rated fuses for '96 and will check if the smog pump is one.
regards
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Don B (02-18-2019)
#85
02-21-2019, 11:21 PM
1995 XJ6 4l trouble shooting update!
As some of you following my earlier posts may recall, just purchased an X300 and while it would turn over, the car was difficult to get started.
So, I did a maintenance and replaced the following:
plugs, ignition coils, fuel filter, oil, crankshaft position sensor.
cleaned a few electrical connections, including the cam position sensor connection, checked for correct
position of the cam position sensor, and replaced a blown fuse (f7) in the smog pump circuit. Checked compression.
Then, started the car... and it started right up, no codes!
It runs and idles evenly and quietly... except at start-up.
When started there is a loud squeal (belt or bearing) and no output from the alternator.
There is no sign of belt slippage, the tension is good, and the belt is new.
I can see that the alternator pully is turning when the squeal is present.
After one minute or so of running, the squeal disappears.
When the squeal disappears, the alternator suddenly jumps up from 11V or so to the expected 13V.
The above is consistent and repeatable.
The squeal is more like a bearing squeal imo than a belt squeal?
Any ideas what could be going on here?
TIA!
So, I did a maintenance and replaced the following:
plugs, ignition coils, fuel filter, oil, crankshaft position sensor.
cleaned a few electrical connections, including the cam position sensor connection, checked for correct
position of the cam position sensor, and replaced a blown fuse (f7) in the smog pump circuit. Checked compression.
Then, started the car... and it started right up, no codes!
It runs and idles evenly and quietly... except at start-up.
When started there is a loud squeal (belt or bearing) and no output from the alternator.
There is no sign of belt slippage, the tension is good, and the belt is new.
I can see that the alternator pully is turning when the squeal is present.
After one minute or so of running, the squeal disappears.
When the squeal disappears, the alternator suddenly jumps up from 11V or so to the expected 13V.
The above is consistent and repeatable.
The squeal is more like a bearing squeal imo than a belt squeal?
Any ideas what could be going on here?
TIA!
#86
02-21-2019, 11:52 PM
Veteran Member
Harmonic balance delaminated and spinning , the belt for the alternator is stationary because of this , common on the X300
Your altornator response was the clue
See post link
https://www.jaguarforums.com/forum/x...-video-214069/
Your altornator response was the clue
See post link
https://www.jaguarforums.com/forum/x...-video-214069/
Last edited by Lady Penelope; 02-22-2019 at 12:01 AM.
#87
02-22-2019, 01:44 AM
Veteran Member
Thanks for the update, good news so far. But your maintenance jobs are not done yet...
The balancer (main pulley) must have the rubber re-laminated. A specialized repair process. Many threads here about it. All these cars need it. Don't worry, it's not that difficult to do.
Dale Manufacturing
Paint a line across the pulley, run the engine once, and you will see that the rubber ring that drives the water pump and alternator has slipped.
The car shoudn't be driven. The battery will soon die because of a lack of charge. Especially when lights and accessories are on. Stalling could happen too.
Recently there were some Chinese aftermarket balancers introduced on Ebay for the X300, could be an option.
The balancer (main pulley) must have the rubber re-laminated. A specialized repair process. Many threads here about it. All these cars need it. Don't worry, it's not that difficult to do.
Dale Manufacturing
Paint a line across the pulley, run the engine once, and you will see that the rubber ring that drives the water pump and alternator has slipped.
The car shoudn't be driven. The battery will soon die because of a lack of charge. Especially when lights and accessories are on. Stalling could happen too.
Recently there were some Chinese aftermarket balancers introduced on Ebay for the X300, could be an option.
#88
02-22-2019, 10:30 AM
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#89
02-25-2019, 09:18 PM
Thanks for the update, good news so far. But your maintenance jobs are not done yet...
The balancer (main pulley) must have the rubber re-laminated. A specialized repair process. Many threads here about it. All these cars need it. Don't worry, it's not that difficult to do.
Dale Manufacturing
Paint a line across the pulley, run the engine once, and you will see that the rubber ring that drives the water pump and alternator has slipped.
The car shoudn't be driven. The battery will soon die because of a lack of charge. Especially when lights and accessories are on. Stalling could happen too.
Recently there were some Chinese aftermarket balancers introduced on Ebay for the X300, could be an option.
The balancer (main pulley) must have the rubber re-laminated. A specialized repair process. Many threads here about it. All these cars need it. Don't worry, it's not that difficult to do.
Dale Manufacturing
Paint a line across the pulley, run the engine once, and you will see that the rubber ring that drives the water pump and alternator has slipped.
The car shoudn't be driven. The battery will soon die because of a lack of charge. Especially when lights and accessories are on. Stalling could happen too.
Recently there were some Chinese aftermarket balancers introduced on Ebay for the X300, could be an option.
...*But* I think there is an issue with the balancer too, as I get that strange drone (as heard from a youtube video on this issue) for just a few seconds after the car starts, then goes away. So I assume that's an indication that the balancer is on the way out?
I'll do the paint stripe and all will be revealed.
As usual with these cars -- and with all cars of a high mileage --- there is seldom just one single issue causing grief...
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