replace ecu but car dont start...

[azkkr]

I just replace my 1996 ECU MD321912R with a 1999 ECU MD359403 and the car cranks but wont start. when I connect the old it starts fine. I replace them to fix my emission problem.

Why there is a letter "R" at the end of the 96 ECU part no. sticke=-*?

Also code reader shows code P0446 with the new ecu but not the old one.

 

[TwoLiterLaser]

Say what? I cannot understand what you are asking.

 

[yesItsdsm]

Open up the ECU you bought and make sure there's no leaky capacitors. If you bought it from a junkyard this is a high possibility.

-If you know the ECU is good and it's compatible with you car, Move on and check the basics : make sure you are getting fuel, spark etc..

 

[kronus]

+1 Wtf

 

[bling5tatus]

It's a very bad idea to buy ecu's without opening them first and checking.... just a heads up for those that don't know....

Also, it's kinda funny, I bought a perfectly good ecu from the jyard before for 15 dollars, no warranty.... because I told them it was leaking on the capacitors and needed to be rebuilt. Hahaha. Oh, no threadjack meant, but my friend also got an external wg from a porsche for super cheap by telling them it was a smog pump or some jazz like that.... hahaha.

 

[azkkr]

Say what? I cannot understand what you are asking.

right. I edit it.

 

[Black91TSiAWD]

Theres a difference in 97-99 and 95-96 ECU's. To make it work you need to swap the plug wires. Swap 1 with 2 and 3 with 4.

 

[azkkr]

Theres a difference in 97-99 and 95-96 ECU's. To make it work you need to swap the plug wires. Swap 1 with 2 and 3 with 4.

Ok,, do you mean only at the coil?

 

[azkkr]

Theres a difference in 97-99 and 95-96 ECU's. To make it work you need to swap the plug wires. Swap 1 with 2 and 3 with 4.

Genius!!!!!!!!! just did abd kaboom. puuuuuuuuuuuring lke a kitty! thanks!

code p0446 shows in the computer. any thoughts?

 

[Black91TSiAWD]

No problem man, glad I could help.

 

[Black91TSiAWD]

P0446: EVAP system vent control

 

[azkkr]

P0446: EVAP system vent control

how to fix this?

 

[azkkr]

P0446 CEL - EVAP Emissions control system vent control circuit malfunction.


the vaccum line between the canister and the intake is bend in two places. can this be the problem>>>>>?