Jump to content

88 ANCX PROM


Guest EDBS0

Recommended Posts

Padgett;<P>I like the sounds of the result ... cooler and more accurate display. If I purchased the same part would it work in a 1989?<P>Thanks in advance, Robert

Link to comment
Share on other sites

Not that far along yet. Have found differences in 89 from 88 (89-90 seem to be more similar).<P>Suspect that difference is in the change in the cooling fans - the three fan relays sequence differently in 88 (LO in 88 is one fan through ballast - in 89-90, both fans are on half speed in LO. Think that is the better arrangement.<P>Now have PROM maps from all three "C" years and are significant differences.

Link to comment
Share on other sites

Have noticed some other differences after replacing my stock 88 PROM with the factory recommened ANCX (p/n 16123488 - someone with a sense of humor assigned that number).<P>As mentioned, the gas milage is more in line with actual - 23.7 ave on last tank.<P>Have also noticed the low cooling fan is coming on now at a much lower temperature.<P>Was holding 183-186F even in stop and go traffic with a/c off (nice and cool in Florida now) which was a surprise - was expecting more excursions at stop lights.<P>Checked when I got home and the low fan was on and was definately on ECU command (not a hung relay) so settings are different from stock. Now need to instrument to determine logic.<P>More data makes less sense: started in garage. Ran test sequence on Fan Relay 1 & 2. Cycled on/off properly. Coolant at 159F. Fan off at idle.<P>Let idle in garage until coolant reached 210 (took a while even at 88F ambient). No fan. Pumped parking brake & put in drive. Fan now on LO and temp dropping. Drove to cleaners: 1/2 mile temp down to 192. At two miles (parking lot) temp showing 183. Fan still on after parking & in park.<P>A/C not used at all.<P>PROM project just keeps getting more interesting.<p>[ 10-25-2001: Message edited by: padgett ]

Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
×
×
  • Create New...