Ok guys,
Ive run into a problem I cant solve. Its 100% ignition problem.. :( Ive got a video for you to watch to spark ideas.
Details on car: 1988 325is with 173 dme
New this summer:
-Entire under hood engine harness / injector harness
-Miller PSIK with MAF
-plugs / cap/ rotor
-BAV AUTO wires
-Ignition coil
-crank POS sensor
-Coolant Temp sensor
-Injectors
-O2 sensor
-All Relays
-Fusable link in trunk
That is all i can think off, TONS of new stuff... Hope i didnt forget
The problem:
Car starts and drives fine, until harder acceleration and shifting. It'll run up through first with plenty of power, and i can shift to second. Problem then shows its head, the second i let off the gas and put in the clutch to shift, the check engine light comes on and the car looses all spark! (imagine turning your key off at 4 grand) RPM gauge will rapidly drive to zero. CLEARLY not reading true rpm anymore. A second later; light goes off, engine fires back up, and rpm reads. Then the same thing nest gear change.. :(
Also Rare, but has been happening, Cruising down highway with cruise control, no gear change or anything.... Problem will show. Check engine light flicks on then back off, ignition quits, then car comes to life again as if nothing happened. But will backfire!!! I think due to fuel being pumped in with no spark, but then spark comes back.
What I do know. From what I read people think the car is loosing timing data and not wanting to fire spark for that reason. Common causes, bad DME, grounds, or crank POS.
I have eliminated all of these very well i believe. I also think I replaced all main ignition components...
What is the cause of this folks?!?!??! Its blowing my mind....
Ive run into a problem I cant solve. Its 100% ignition problem.. :( Ive got a video for you to watch to spark ideas.
Details on car: 1988 325is with 173 dme
New this summer:
-Entire under hood engine harness / injector harness
-Miller PSIK with MAF
-plugs / cap/ rotor
-BAV AUTO wires
-Ignition coil
-crank POS sensor
-Coolant Temp sensor
-Injectors
-O2 sensor
-All Relays
-Fusable link in trunk
That is all i can think off, TONS of new stuff... Hope i didnt forget
The problem:
Car starts and drives fine, until harder acceleration and shifting. It'll run up through first with plenty of power, and i can shift to second. Problem then shows its head, the second i let off the gas and put in the clutch to shift, the check engine light comes on and the car looses all spark! (imagine turning your key off at 4 grand) RPM gauge will rapidly drive to zero. CLEARLY not reading true rpm anymore. A second later; light goes off, engine fires back up, and rpm reads. Then the same thing nest gear change.. :(
Also Rare, but has been happening, Cruising down highway with cruise control, no gear change or anything.... Problem will show. Check engine light flicks on then back off, ignition quits, then car comes to life again as if nothing happened. But will backfire!!! I think due to fuel being pumped in with no spark, but then spark comes back.
What I do know. From what I read people think the car is loosing timing data and not wanting to fire spark for that reason. Common causes, bad DME, grounds, or crank POS.
I have eliminated all of these very well i believe. I also think I replaced all main ignition components...
What is the cause of this folks?!?!??! Its blowing my mind....