tekrsq
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99 EB, 5/4, 212,000 miles. For about the last 8 months or so, I have noticed that my engine has been running higher temps than normal.........especially when pulling a trailer. With a 195F thermostat, the truck normally runs 195-200F...occassionally at 205 if it's a 100+ degree day. Temps when pulling about 5000 lbs will sometimes get to the 220F range.
Anyway, in the last 8 months or so, I've noticed normal driving temps anywhere from 205-210F, and up to 230+ when pulling my trailer. With temps getting warmer now, the engine temps are going up more. The engine runs fantastic except for a very slight, occassional miss at idle after it reaches operating temps. There is NO hydrocarbons in the coolant, NO oil in the coolant, NO loss of coolant, NO coolant in oil. It burns about 1/3 qt of oil about every 3,000 miles, but it's been doing that for several years. NO codes have shown up any scanners.
The plugs & COPS have about 10,000 miles on them. The radiator was replaced (upgraded to 4 core), along with a new water pump, and fan clutch less than 3,000 miles ago.
The truck did run hot about 6 yrs ago (bad water pump), but things were checked out afterwards and everything was fine......good compression, no fluid cross contamination, etc, and it has ran fine until about 8 months ago.
I'm having a hard time believing it's a head gasket, or cracked head, but I'm running out of possibilities, unless somebody here has any ideas. I TRULY hate the thought of changing the head gaskets in my driveway, money is tight, and everybody wants STUPID money to do the job.
EDIT.......Oh, I forgot to ask. Are the 5.4 SOHC heads from an f-150, 250, etc compatible with the Expy engine ? If push come to shove, could I put 99/2000 F150 complete 5.4 intro my 99 Expy ??
Anyway, in the last 8 months or so, I've noticed normal driving temps anywhere from 205-210F, and up to 230+ when pulling my trailer. With temps getting warmer now, the engine temps are going up more. The engine runs fantastic except for a very slight, occassional miss at idle after it reaches operating temps. There is NO hydrocarbons in the coolant, NO oil in the coolant, NO loss of coolant, NO coolant in oil. It burns about 1/3 qt of oil about every 3,000 miles, but it's been doing that for several years. NO codes have shown up any scanners.
The plugs & COPS have about 10,000 miles on them. The radiator was replaced (upgraded to 4 core), along with a new water pump, and fan clutch less than 3,000 miles ago.
The truck did run hot about 6 yrs ago (bad water pump), but things were checked out afterwards and everything was fine......good compression, no fluid cross contamination, etc, and it has ran fine until about 8 months ago.
I'm having a hard time believing it's a head gasket, or cracked head, but I'm running out of possibilities, unless somebody here has any ideas. I TRULY hate the thought of changing the head gaskets in my driveway, money is tight, and everybody wants STUPID money to do the job.
EDIT.......Oh, I forgot to ask. Are the 5.4 SOHC heads from an f-150, 250, etc compatible with the Expy engine ? If push come to shove, could I put 99/2000 F150 complete 5.4 intro my 99 Expy ??