denvermaxd
New member
NOTE: I posted this in the "4th gen T4Rs" forum initially. Re-posting here. Sorry about that!
Injector question: Is it possible to test the resistance of the fuel injectors on the driver side (2, 4, 6) WITHOUT removing the supercharger (or plenum for non-SC vehicles)?
BACKGROUND:
On Friday last week I picked up my 2000 SR5 manual from the tire shop. Got home, realized I forgot something, and jumped back in the truck, but as soon as I started up and began to roll I could tell there was something wrong. Engine felt rough and with a manual you can really tell when there's a power loss.
A few minutes later, check engine light came on. P0300 and P0302. Interestingly enough, once I got on the gas to merge into traffic I felt the roughness disappear and had full power. Truck ran fine after that for about 10 miles and 2 trips.
Then yesterday, ran to the store and truck ran fine. Parked for about 20 minutes. When I restarted the truck, engine was back to rough idle and low power, but this time, no codes. Drove about 6 miles home, rough all the way, no codes, no check engine.
Last night I pulled the spark plug from the #2 cylinder and everything looked good. These Denso Iridium IK22 plugs have about 20,000 miles on them, and I do have a supercharger so it can be hard on plugs.
Ordered new plugs anyway, and am going to run Lucas lube and injector cleaner tonight.
Drove a couple nights ago, and same experience: Runs great when cold started. Any re-start with a warm/hot engine is triggering the rough engine/low-power but no more codes.
When I posted in the wrong forum earlier, Buckaroo gave some good guidance and a link to a thread that eventually led the poster to a bad injector with similar symptoms.
I have 3 new coil packs in hand and am going to swap in a new one for the "1-2" coil pack today... assuming that the P0302 error was pointing to the right cylinder. But I'm pretty confident I'm looking at a bad injector.
I also have new plugs, but I'm pretty sure the plug was fine. The wires aren't very old, but if I end up doing the injector(s) I'll probably just swap wires and plugs as well.
Injector question: Is it possible to test the resistance of the fuel injectors on the driver side (2, 4, 6) WITHOUT removing the supercharger (or plenum for non-SC vehicles)?
BACKGROUND:
On Friday last week I picked up my 2000 SR5 manual from the tire shop. Got home, realized I forgot something, and jumped back in the truck, but as soon as I started up and began to roll I could tell there was something wrong. Engine felt rough and with a manual you can really tell when there's a power loss.
A few minutes later, check engine light came on. P0300 and P0302. Interestingly enough, once I got on the gas to merge into traffic I felt the roughness disappear and had full power. Truck ran fine after that for about 10 miles and 2 trips.
Then yesterday, ran to the store and truck ran fine. Parked for about 20 minutes. When I restarted the truck, engine was back to rough idle and low power, but this time, no codes. Drove about 6 miles home, rough all the way, no codes, no check engine.
Last night I pulled the spark plug from the #2 cylinder and everything looked good. These Denso Iridium IK22 plugs have about 20,000 miles on them, and I do have a supercharger so it can be hard on plugs.
Ordered new plugs anyway, and am going to run Lucas lube and injector cleaner tonight.
Drove a couple nights ago, and same experience: Runs great when cold started. Any re-start with a warm/hot engine is triggering the rough engine/low-power but no more codes.
When I posted in the wrong forum earlier, Buckaroo gave some good guidance and a link to a thread that eventually led the poster to a bad injector with similar symptoms.
I have 3 new coil packs in hand and am going to swap in a new one for the "1-2" coil pack today... assuming that the P0302 error was pointing to the right cylinder. But I'm pretty confident I'm looking at a bad injector.
I also have new plugs, but I'm pretty sure the plug was fine. The wires aren't very old, but if I end up doing the injector(s) I'll probably just swap wires and plugs as well.
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