dyna
NAXJA Forum User
- Location
- central coast Ca
I did a search and didnt really see what I need. I recently picked up a 87 4.0 auto. This is my 4th XJ, one 93 one 95 and one 85 with a 2.8. I think this is the only renix one then which Im not familiar with?
Couple questions. It cranks longer than the others to start, 5 seconds maybe then runs fine. The fuel pump is fairly noisy (buzzing)in comparison all the time it seems, but almost seems every once and a while its quiet. It seems low on power compared to the other reg 4.0., running 235 and have to floor it in 3rd to do 65 up a 4% grade? Mileage seems normal, tail pipe is clean metal it seems instead of some black deposits (to lean?) no codes or CEL, havent smogged it in a while. Are these symptoms of a dying fuel pump?
BTW the CAT and fuel fltr,plugs etc are fairly new. Just adjusted the TPS, was .05 @ closed and set to .083 as reccomended, but seems to max out @ 4.54 volts if I recall.
Thanks for any help or links.
Couple questions. It cranks longer than the others to start, 5 seconds maybe then runs fine. The fuel pump is fairly noisy (buzzing)in comparison all the time it seems, but almost seems every once and a while its quiet. It seems low on power compared to the other reg 4.0., running 235 and have to floor it in 3rd to do 65 up a 4% grade? Mileage seems normal, tail pipe is clean metal it seems instead of some black deposits (to lean?) no codes or CEL, havent smogged it in a while. Are these symptoms of a dying fuel pump?
BTW the CAT and fuel fltr,plugs etc are fairly new. Just adjusted the TPS, was .05 @ closed and set to .083 as reccomended, but seems to max out @ 4.54 volts if I recall.
Thanks for any help or links.