quickduc
Proven Member
- 47
- 5
- Jul 17, 2014
-
Milpitas,
California
This problem has been ongoing for years.
Plugs and wires don't help. Swapped the coil from my spare engine, no change. Ignitor box, ditto. Cleaned the injectors. (removed them and soaked them in Sea Foam with a power supply to hold them open, to expose the internals for complete cleaning. Wow! What a difference in throttle response and overall performance. Like a new engine! Still won't rev up.)
I'm not seeing/hearing/feeling any boost leaks. Have not installed a real boost gauge. Just has the oem dash gauge.
Replaced the fuel pump when it started stalling below a 1/4 tank. Put in a Walbro 255?
Except for the pump, the car is stock.
This problem aggravated my father the PO, and his mechanic could never figure it out. The car would run 140mph originally. Dad had a bunch of these DSMs, but this one had him stumped.
This has been an erratic problem. When I first got it ~'03, it occasionally wouldn't rev up. Now, it is reversed, and mostly won't. Runs strong until 5500. It acts like it has a rev limiter.
Has that CARB mandated generic cat that strangles the motor, but this problem predates that by a decade or more. (I suspect that CARB picked the 420 cat for all the DSMs, as I estimated the matrix is about 63% volume of the OEM cat. Strangles that poor motor. I can understand why people take the damn things off with this sort of idiocy. Seems to hurt fuel mileage too.)
Got it with 100k miles, now ~168k.
Plugs and wires don't help. Swapped the coil from my spare engine, no change. Ignitor box, ditto. Cleaned the injectors. (removed them and soaked them in Sea Foam with a power supply to hold them open, to expose the internals for complete cleaning. Wow! What a difference in throttle response and overall performance. Like a new engine! Still won't rev up.)
I'm not seeing/hearing/feeling any boost leaks. Have not installed a real boost gauge. Just has the oem dash gauge.
Replaced the fuel pump when it started stalling below a 1/4 tank. Put in a Walbro 255?
Except for the pump, the car is stock.
This problem aggravated my father the PO, and his mechanic could never figure it out. The car would run 140mph originally. Dad had a bunch of these DSMs, but this one had him stumped.
This has been an erratic problem. When I first got it ~'03, it occasionally wouldn't rev up. Now, it is reversed, and mostly won't. Runs strong until 5500. It acts like it has a rev limiter.
Has that CARB mandated generic cat that strangles the motor, but this problem predates that by a decade or more. (I suspect that CARB picked the 420 cat for all the DSMs, as I estimated the matrix is about 63% volume of the OEM cat. Strangles that poor motor. I can understand why people take the damn things off with this sort of idiocy. Seems to hurt fuel mileage too.)
Got it with 100k miles, now ~168k.