Base timing for a 1998 5.0L?
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Assuming your motor has a distributor (my 99 does not), you have to pull the SPOUT connector to put the ECU in service mode or you won't get an accurate reading. Once you do that, the initial timing should be 10deg. If you have a distributorless ignition, the timing is not adjustable and it is most likely okay anyway.
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I found out that all the 5.0 explorers are DIS like your '99. Maybe it is fine, just seems a bit high to me. I am still researching this and will let you know. Anyone ever seen a timing adjuster for for these motors like they have for the mustangs with DIS?
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It's not too high. If you were able to put to ECU in service mode, it would read 10 deg.
My last two Mustang GT's had distributors and whenever I check the timing on those without putting the ECU in service mode, the timing read very high and jumped around quite a bit. When I pulled the SPOUT connector, they would read dead solid on 10 degrees.
What is making you interested in the timing? Is the motor pinging? If so, you'll see plenty of threads here on other issues that are causing detonation in these motors.
My last two Mustang GT's had distributors and whenever I check the timing on those without putting the ECU in service mode, the timing read very high and jumped around quite a bit. When I pulled the SPOUT connector, they would read dead solid on 10 degrees.
What is making you interested in the timing? Is the motor pinging? If so, you'll see plenty of threads here on other issues that are causing detonation in these motors.
Last edited by ric232; Feb 1, 2004 at 08:30 PM.
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Well there are a number of things. Most notibly it is hannging idle, and the idle will creep up over 1200rpm+, and not come down even with the TB closed fully. I know the cam I have in it will want to be higher than 750rpm, but something closer to 900 would be nice.
I am also having fuel issues and I think the injectors are to big which is a easy fix, but I am just dotting I's and crossing T's since I noticed the high timing.
With what you said and me messing with FP I think you are right and that it is not timing related. I dropped the FP and the motor seemed to respond better overall, so I will change the injectors back to stockers and see what happens. I had increased them since I went with a bigger cam and alum heads, guess I did not need to. The car is not road worthy at this point, so I am just testing in the garage with no load.
THANKS RIC!
I am also having fuel issues and I think the injectors are to big which is a easy fix, but I am just dotting I's and crossing T's since I noticed the high timing.
With what you said and me messing with FP I think you are right and that it is not timing related. I dropped the FP and the motor seemed to respond better overall, so I will change the injectors back to stockers and see what happens. I had increased them since I went with a bigger cam and alum heads, guess I did not need to. The car is not road worthy at this point, so I am just testing in the garage with no load.
THANKS RIC!
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