Installed JWT ECU: now motor lagging
10-04-2006, 07:55 PM
#1
Installed JWT ECU: now motor lagging
Vehicle: 97 Maxima SE 5 speed 172xxx
Mods: Basic bolt ons MEVI and recent 96 JWT ECU Manual Tranny and 7.5 RL
(Length was determined on a closed course, no timing monitor working at the time)
When the JWT ECU was first installed the thing worked like a dream! Awesome power gain throughout the entire rpm. Four car lengths gain/difference total!
Two weeks and a decent amount of beating later the car seems to be lacking power. Sure enough, I am three car lengths behind what I was running at first.
Facts:
-I've ran the engine up to 7500 rpm 4 times, usually shift around 7100 rpm
-I've done an OBDII scan and a new code has popped up: P1335 (Crank sensor(REF))
-Checked the sensor and it's fine. 480 ohms at 75 degrees
-Compression tested at 200 all across the board.
Things I'm going to try:
-clean out the clogged air filter
-change the worn out spark plugs
-change the 40k mile fuel filter
Any hints or advice would be helpful. Thanks guys!
Mods: Basic bolt ons MEVI and recent 96 JWT ECU Manual Tranny and 7.5 RL
(Length was determined on a closed course, no timing monitor working at the time)
When the JWT ECU was first installed the thing worked like a dream! Awesome power gain throughout the entire rpm. Four car lengths gain/difference total!
Two weeks and a decent amount of beating later the car seems to be lacking power. Sure enough, I am three car lengths behind what I was running at first.
Facts:
-I've ran the engine up to 7500 rpm 4 times, usually shift around 7100 rpm
-I've done an OBDII scan and a new code has popped up: P1335 (Crank sensor(REF))
-Checked the sensor and it's fine. 480 ohms at 75 degrees
-Compression tested at 200 all across the board.
Things I'm going to try:
-clean out the clogged air filter
-change the worn out spark plugs
-change the 40k mile fuel filter
Any hints or advice would be helpful. Thanks guys!
10-04-2006, 08:40 PM
#2
i have the same code but with the geforce ecu, i dont think it is computer related. I have my code on because i chipped one of the signal teeth behind the drive plate for my automatic transmission. I know its lagging for a fact. I would check the teeth make sure they are ok
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