mass air conversion has off idle stumble

71fordramair

15 Year Member
Apr 29, 2008
36
0
7
el cajon ca.
I found the mass air manual trans. computer I needed for my '89. Installed it with granattelli conversion kit. Car starts but idles really rich, but clears out and then has a bad stumble off idle. Check engine light stays on, drove it around to see if it would reset itself but light still stays on.

There are 3 codes that are coming up: 52 (pwer steering pressure switch, circuit open); 85 (cannister purge circuit failure); 95 (fuel pump secondary circuit failure, ECA tube ground, battery to ECA).

I pulled the negative cable to try to clear the codes but it still comes on (KOEO). I had to put my speed density computer back in, and its definitely slower!

Any suggestions :shrug:

Thanks.
 
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