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94 Cadillac Seville SLS, 97,000 miles, MAP codes

Tiny
DPBUTAL
  • MEMBER
  • 1994 CADILLAC SEVILLE
I have been having a very slight low speed hesitation problem for some time and the car finally stalled out while going up the hill to my home at about 15-20 mph. I restarted the car, it surged, and then proceeded uphill to my driveway without further incident. Via the onboard diagnostics I saw that the following 3 MAP sensor codes were set P032, P034, and P071, and also the stall detected code of P095. Following the diagnostics for the first two MAP codes PD03 was always 98 or 97 and PD02 averaged about 40 and both indicated that the MAP sensor might be OK. Diagnostics for P071 wanted me to remove the valve cover and to do additional tests which were beyond my skill level, additionally I do not have any additional testing tools other that the onboard diagnostics. What should be my next best course of action to resolve this problem? Thanks Dave
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Tuesday, October 23rd, 2007 AT 12:08 PM

2 Replies

Tiny
2CARPRO JACK
  • MECHANIC
  • 11,533 POSTS
The MAP reads vacuum, and at that age I wouldnt rule out that it is bad. Underhood heat and engine reversion all make their way intot the MAP sensors, creating slow/ non-responsive readings. It would be a cheap try
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Tuesday, October 23rd, 2007 AT 12:11 PM
Tiny
ANDREW1171
  • MEMBER
  • 1 POST
Ok I have the same issue same car at 109000 and I replaced the map this past summer was driving fine for about 6 months and then I get this running hot problem(205-217) and I start stalling again. Hooked up the obd code reader same 4 codes 34, 32, 71, 95 in that order. But I noticed I have a cracked boot on 1 of my intake manifold bolts. Could this possibly cause an intake leak and send a bad map signal?
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Thursday, March 18th, 2010 AT 8:37 PM

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